New To Science: Native Texas Taxa, 1995-2009


Forty-four (44) new species and varieties have been described as new to science in Texas since 1994 -- many of these rare and of conservation concern.  15 of the 43 occur within Texas and in one or more surrounding states (including Mexico).  29 are endemic to Texas.  


Texas Ecoregions for the new species are shown on the map (top page).  Three of those mapped in Gulf Prairies and Marshes are mostly restricted to the Carrizo Sands.  Only four of those from the Pineywoods region are endemic to Texas. 


Updates 2009: Convolvulus carrii, Iva corbinii, Orobanche riparia    


* Amaranthus tamaulipensis J. Henrickson, Sida 18:800, figs. 4, 5 [map], 8. 1999.  Amaranthaceae.  Tamaulipas amaranth.  Similar to Amaranthus dubius and A. brandegei, barely touching into southern Texas from a wide distribution in Mexico.  (TAMAULIPAS.  SAN LUIS POTOSI.  TABASCO.  TEXAS: Cameron Co.).  [Henrickson, J.  1999.  Studies in New World Amaranthus (Amaranthaceae).  Sida 18:783–807.]  REGION F. South Texas Plains


* Amaranthus X texensis J. Henrickson, Sida 18:791, figs. 4, 5 [map]. 1999.  Amaranthaceae.  A series of plants, some of which are sterile and produce no mature seed, appear to represent hybrids or derivatives of hybridization, perhaps from Amaranthus crassipes and A. scleropoides.  They have been collected from loose red sands to sandy loams in southern Texas and adjacent Tamaulipas, Mexico.  (TAMAULIPAS. TEXAS: Atascosa Co., Duval Co., Hidalgo Co., Webb Co.).  [Henrickson, J.  1999.  Studies in New World Amaranthus (Amaranthaceae).  Sida 18:783–807.]  REGION F. South Texas Plains (endemic)


* Anthenantia texana Kral, Sida 21:296-297, figs. 1, 4. 2004.  Poaceae.  Texas anthenantia.  Identified in the past as A. villosa, particularly the broader and more distinctively auriculate-leaved, paler-haired plants.  It grows in sands, sandy clay loam, sandy peat or silts of pine flatwoods, pine-oak barrens, bog edges, ditchbanks, and clearings on the Gulf Coastal Plain and contiguous physiography west of the Mississippi delta.  (ARKANSAS: Bradley Co., Calhoun Co., Ouachita Co.  LOUISIANA: Allen Par., Beauregard Par., Grant Par., Jefferson Davis Par., Natchitoches Par., Winn Par.  TEXAS: Angelina Co., Aransas Co., Austin Co., Calhoun Co., Freestone Co., Hardin Co., Harris Co., Houston Co., Jackson Co., Jasper Co., Liberty Co., Newton Co., Nueces Co., Robertson Co., Tyler Co.).  All three species of the genus are endemic to the southeastern USA.  [Kral, R.  2004.  An evaluation of Anthenantia (Poaceae).  Sida 21:293–310.]  REGION A. Pineywoods (and B)


* Arida mattturneri Turner & Nesom, Sida 20:1418, figs. 1, 2. 2003.  Asteraceae.  Mattturner’s tansy-aster.  Known only from the immediate area of the type locality – north of Ruidosa in “Blumberg Canyon’ in Presidio Co. --  where it grows along the sides of small gypseous canyons with permanent streams, at 1400–1500 m.  [Turner, B.L. and G.L. Nesom.  2003.  A new species of Arida (Machaeranthera sect. Arida – Asteraceae: Astereae) from trans-Pecos, Texas.  Sida 20:1417–1420.]  REGION J. Trans-Pecos, Mtns and Basins (endemic)


* Berlandiera pumila var. scabrella Nesom & Turner, Sida 18:499, fig. 1 [map]. 1998.  Asteraceae.  Rough green-eyes.  A variant in the southeastern corner of the range of western B. pumila.  A previous hypothesis that such plants originated through hybridization is not confirmed.  (LOUISIANA: Beauregard Par., Sabine Par., Vernon Par. TEXAS: Angelina Co., Hardin Co., Jasper Co., Newton Co., Polk Co., Sabine Co.).  [Nesom, G.L. and B.L. Turner.  1998.  Taxonomy of the Berlandiera pumila complex (Asteraceae: Heliantheae).  Sida 18:493–502.]  REGION A. Pineywoods 


* Brazoria enquistii M.W Turner, Sida 20:1565, figs. 1 [map], 2 [map], 3. 2003.  Lamiaceae.  Enquist’s brazos-mint.  Endemic to granitic streambeds of the Llano River watershed; only four of the 16 known populations are not along such streambeds.  (Mason Co., Llano Co., Burnet Co.).  [Turner, M.W.  2003.  A new species of Brazoria (Lamiaceae) from the Central Mineral Region of Texas.  Sida 20:1565-1571.]  G. Edwards Plateau (endemic)


* Carex shinnersii P. Rothrock & Reznicek, Novon 11:225, fig. 3E. 2001.  Cyperaceae.  Shinners’ sedge.  Described from a type locality in Delta Co., Texas, but the species occurs also in Oklahoma, Arkansas, and Kansas.  It grows in seasonally wet to dry, grassy ditches, swales, and slopes, often in clayey soils at elevations of 100–300 meters.  [Rothrock, P.E. and A.A. Reznicek.  2001.  The taxonomy of the Carex bicknellii group (Cyperaceae) and new species for central North America.  Novon 11:205–228.]  REGION A. Pineywoods (and C and D)


* Centaurium blumbergianum Turner, Sida 21:87, figs. 1-3. 2004.  Gentianaceae.  Blumberg’s centaury.  Occurs only along saline streams and in seeps at the base of gypseous-limestone walls in dead-end canyons in Presidio County.  In these habitats, it grows with other rare taxa, including Arida blepharophylla and Arida mattturneri.  It is not obviously closely related to any other North American taxa.  [Turner, B.L.  2004.  A new species of Centaurium (Gentianaceae) from trans-Pecos Texas.  Sida 21:87-91.]  REGION J. Trans-Pecos, Mtns and Basins (endemic)


* Clematis carrizoensis D. Estes, Sida 22:67, figs. 1 [map], 2,3,4. 2006.  Ranunculaceae.  Carrizo leather-flower.  Occurs in or along edges of open, well-drained, prairie-like areas in the Carrizo sands (Cherokee, Smith, Van Zandt Co.).  The species is allopatric with its closest relatives.  The plants trail along ground or over low herbs, shrubs, or fences, apparently rarely climbing higher into low branches of trees.  [Estes, D.  2006.  A new narrowly endemic species of Clematis (Ranunculaceae: subgenus Viorna) from northeastern Texas.  Sida 22:65-77.]  REGION B. Gulf Prairies and Marshes (Carrizo) (endemic)


* Convolvulus carrii B.L. Turner, Phytologia 91:394, figs. 1, 2, 3 [map]. 2009.  Convolvulaceae.  Carr’s bindweed.  Known only from Holocene sands of Brooks and Hidalgo counties in south Texas.  “The novelty is closely similar to Covolvulus equitans but can be distinguished by a syndrom of characters, including thickened, marked venose, silvery-pubescent, markedly dentate, deltoid leaves (vs. thin, sparsely pubescent, and highly variable as to shape and marginal dentation); flowering peduncles 5-7 cm long (vs. shorter); large white corollas with maroon or purplish throats, rarely not (vs. smaller and white to pale pink, the purple throats only rarely present); and seed coats smooth or nearly so (vs. mostly papillose).”  Turner conjectures that C. carrii evolved on these ancestral dunes out of the more widespread and variable C. equitans.  “No plants of C. equitans were found in the deep sandy soils to which C. carrii is restricted.”  [Turner, B.L.  2009.  Convolvulus carrii, a localized endemic from southernmost Texas.  Phytologia 91: 394-400.] REGION F. South Texas Plains


* Crataegus nananixonii Phipps & O'Kennon, Sida 17:569, fig. 1. 1997.  Rosaceae.  Nixon's Little Hawthorn.  Known only from Nacogdoches Co., where it is locally common in open sandy scrubland.  Superficially resembling C. uniflora.  [Phipps, J.B. and R.J. O’Kennon.  1997.  Crataegus nananixonii (Rosaceae Ser. Intricatae) a new species of hawthorn from Eastern Texas. Sida 17:569-574.]  REGION A. Pineywoods (endemic)


* Croton bigbendensis B.L. Turner, Sida 21:79, figs. 1, 2, 3 [map]. 2004.  Euphorbiaceae.  Big Bend croton.  Largely confined to the lower elevations of the Big Bend region in Brewster, Presidio, and Hudspeth counties, where it dominates sandy flats along the Rio Grande.  Flowering April through August.  So far as known, it does not co-occur or intergrade with Croton dioicus, with which it has been confused.  [Turner, B.L.  2004.  Croton bigbendensis (Euphorbiaceae), a new species from trans-Pecos Texas.  Sida 21:79–85.]  REGION J. Trans-Pecos, Mtns and Basins (endemic but to be expected in Coahuila and Chihuahua)


* Dalea austrotexana B.L. Turner, Phytologia 88:289, fig. 2 [map]. 2006.  Fabaceae.  South Texas dalea.  Populations from southernmost Texas previously identified within Dalea lanata var. lanata have been described as a new species, D. austrotexana.  It occurs in only a few counties, where it is largely confined to dune sands.  (TEXAS: Brooks Co., Cameron Co., Jim Hogg Co., Kenedy Co., Starr Co.).  In addition, Dalea lanata var. terminales is treated at species rank, where it takes the name D. glaberrima S. Wats. – occurs in Nevada, Utah, Arizona, New Mexico, Texas, Coahuila, and Nuevo Leon.  [Turner, B.L.  2006.  Dalea austrotexana (Fabaceae), a new speces from southernmost Texas.  Phytologia 88:288–293.]  REGION F. South Texas Plains (endemic)


* Eriogonum riograndis Nesom, Sida 20:32, figs. 1, 2 [map]. 2002.  Polygonaceae.  Rio Grande buckwheat.  Segregated from E. multiflorum with the observation that “Conspicuous morphological and geographic discontinuity between Eriogonum multiflorum and E. riograndis is the predominant feature of their contrast.  Putative morphological intermediates suggest that hybridization may occur where they come into geographically close contact, but no zone of intergradation exists to suggest that significant gene flow occurs between the two taxa”  (Nesom 2002, p. 37).  The few putative hybrids were cited in the publication.  Reveal (in FNA Vol. 5, 2005) treated the taxon as E. multiflorum var. riograndis (G.L. Nesom) Reveal (Harvard Pap. Bot. 9: 184. 2004), noting that  “Variety riograndis is found just to the west and south of var. multiflorum, and a series of overlapping (and intergrading) populations occurs along their shared boundary.”  Reveal did not provide any further evidence or cite specimens, so the basis of his observation and taxonomic conclusion is obscure.  (TEXAS: Aransas Co., Brooks Co., Calhoun Co., Duval Co., Hidalgo Co., Jim Hogg Co., Jim Wells Co., Karnes Co., Kenedy Co., Kleberg Co., Nueces Co., Refugio Co., San Patricio Co., Webb Co., Willacy Co., Zapata Co.).  [Nesom, G.L.  2002.  A new species of Eriogonum (Polygonaceae) from south Texas.  Sida 20:31–38.]  REGION F. South Texas Plains (endemic)


* Froelichia latifolia R.A. McCauley, Syst. Bot. 29:73, fig. 5, 6 [map]. 2004.  Amaranthaceae.  Broad-leaf snake cotton.  Southeastern Texas, “most abundant near Corpus Christi and south through Padre Island to central Kenedy County.  It also is quite abundant south of the Bastrop Pines region in Bastrop Co..  In open disturbed grassland habitats, forest edges, and ocean dunes.”  Mostly previously identified as F. floridana, but closest phylogenetically to F. texana.  [McCauley, R.A.  2004.  New taxa and a new combination in the North American species of Froelichia (Amaranthaceae).  Syst. Bot. 29:64–76.]  REGION B. Gulf Prairies and Marshes (sands, including Carrizo) (endemic)


* Gamochaeta argyrinea Nesom, Sida 21:718, fig. 1, 3, 4, 6 [map]. 2004.  Asteraceae.  Silver cudweed.  Commonly misidentified as Gamochaeta purpurea.   Common in disturbed habitats in many east Texas counties and across the southeastern USA.  [Nesom, G.L.  2004.  New species of Gamochaeta (Asteraceae: Gnaphalieae) from the eastern United States and comments on similar species.  Sida 21:717–742.]  REGION A. Pineywoods 


* Gratiola quartermaniae D. Estes, J. 1:163, fig. 3, 5 [map], 8. 2007.  Plantaginaceae.  Quarterman’s hedge-hyssop.  Shallow soil over limestone in Texas, disjunct to other regions, most common in central Tennessee.  ONTARIO.  ALABAMA.  ILLINOIS.  TENNESSEE. TEXAS: Bell, Llano, Williamson).  [Estes, D. and R.L. Small.  2007.  Two new species of Gratiola (Plantaginaceae) from eastern North America and an updated circumscription for Gratiola neglecta.  J. 1:149-170.]  REGION G. Edwards Plateau (endemic)


* Hedyotis nigricans var. austrotexana B.L. Turner, Phytologia 79:15, fig. 2 [map]. 1995 [1996].  Rubiaceae.  South Texas star-violet.  (TEXAS: Bee, Cameron, DeWitt, Goliad, Jackson, Jim Hogg, Live Oak, McMullen, San Patricio).  [Turner, B.L.  1995. Taxonomic overview of Hedyotis nigricans (Rubiaceae) and closely allied taxa.  Phytologia 79:12-21.]  REGION F. South Texas Plains (endemic)


* Hedyotis nigricans var. gypsophila B.L. Turner, Phytologia 79:15, fig. 4 [map]. 1995 [1996].  Rubiaceae.  Gypsum star-violet.  Gypseous substrate.  (MEXICO: NUEVO LEON.  TEXAS: Culberson Co., Jeff Davis Co.).  [Turner, B.L.  1995. Taxonomic overview of Hedyotis nigricans (Rubiaceae) and closely allied taxa.  Phytologia 79:12-21 [figs. 1 [map], 2, 3].  Turner, B.L.  2002.  Biological status of Hedyotis nigricans var. gypsophila (Rubiaceae) in Texas.  Sida 20:215-220. (affirms validity of taxon)  REGION J. Trans-Pecos, Mtns and Basins


* Heliotropium powelliorum B.L. Turner, Lundellia 10:7, figs. 1 [map], 2. 2007.  Boraginaceae.  Powell’s heliotrope.  Heliotropium powelliorum occurs in Brewster Co. and adjacent Chihuahua, Mexico.  Allopatric with H. torreyi but not intergrading with it.  [Turner, B.L.  2007.  Distribution of Heliotropium torreyi (Boraginaceae), and the description of a new species from its midst.  Lundellia 10:7-10.]. REGION J. Trans-Pecos, Mtns and Basins


* Ipomoea costellata var. edwardsensis O’Kennon & Nesom, Sida 20:39, figs. 1, 2, 3 [map]. 2002.  Convolvulaceae.  Edwards Plateau morning glory.  Endemic to the Edwards Plateau region.  It is set apart from I. costellata elsewhere in its range by a combination of shorter peduncles and bright white, rotate flowers with fewer and deeper lobes, as well as by phenology and geography.  In fact, it is disjunct and isolated from all other populations identified as I. costellata (Webb Co. and trans-Pecos Texas, New Mexico, Arizona, and Mexico to Guatemala) and probably should be treated at specific rank. (TEXAS: Bexar Co., Burnet Co., Gillespie Co., Llano Co., Travis Co., Uvalde Co.).  [O’Kennon, R.J. and G.L. Nesom.  2002.  A new variety of Ipomoea costellata (Convolvulaceae) from the Edwards Plateau region of Texas.  Sida 20:39–46.]  REGION G. Edwards Plateau (endemic)


* Iva corbinii B.L. Turner, Lundellia 12: 5, 2009.  Asteraceae.  Austin iva.  Apparently restricted to the Colorado River bottoms of Travis County, Texas.  It is a remarkably distinct species, having predominately axillary, single heads; its closest relationship appears to be with I. axillaris, but differs from that taxon by numerous traits, most noteworthy by its involucres, which are composed of non-united bracts, suggesting a primitive position in the genus Iva.  A photograph of the type collection is provided, along with a colored picture of its eponymous collector standing amongst a living population of the taxon.  [Turner, B.L.  2009.  Iva corbinii (Asteraceae): A remarkable new species from Travis County, Texas.  Lundellia 12: 5–7.] 

* Laennecia turnerorum
Nesom, Sida 19:789, fig. 1. 2001.  Asteraceae.  Turner’s laennecia.  A spring ephemeral -- the small size, disciform capitula, and short duration of the plants probably account for their escape from detection by earlier botanists.  B.L. Turner, who made the type collection, returned to the type locality about four weeks later and found that plants of the new species had died and dried essentially beyond recognition, while those of Laennecia coulteri at the same site remained alive and in reproductive condition.  The type locality is about 60 miles south of Alpine (Brewster Co.) in a large basin essentially surrounded by desert mountains.  Laennecia turnerorum was collected in silty limestone-derived soil in a low area with desert grasses, with abundant Larrea, scattered Yucca, and other shrubs occur slightly upslope.  [Nesom, G.L.  2001.  Laennecia turnerorum (Asteraceae: Astereae), a new species from trans-Pecos, Texas.  Sida 19:789–793.]. REGION J. Trans-Pecos, Mtns and Basins (endemic)


* Liatris aestivalis Nesom & O'Kennon, Sida 19(4):768-776, figs. 1-2, 6 [map]. 2001.  Asteraceae.  Summer gayfeather.  Known only from a few counties in north-central Texas and south-central Oklahoma, where it grows in pine-oak and oak-juniper woodlands, blackland prairies, and other grassland habitats.  It has an affinity for sites with shallow soils over limestone outcrops (with the exception of plants on deep sands in Parker County).  Several populations are located on public lands including Platt National Park in southern Oklahoma and LBJ National Grassland in Texas.  (OKLAHOMA: Atoka Co., Bryan Co., Johnston Co., Love Co., Marshall Co., Murray Co. TEXAS: Anderson Co., Cooke Co., Coryell Co., Denton Co., Hays Co., Montague Co., Parker Co., Tarrant Co., Travis Co., Wise Co.).  [Nesom, G.L. and R.J. O’Kennon.  2001.  Two new species of Liatris series Punctatae (Asteraceae: Eupatorieae) centered in north-central Texas.  Sida 19:767–787.]  REGION E. Cross Timbers and Prairies


* Liatris elegans Michx. var. bridgesii Mayfield, Sida 20:598. 2003.  Asteraceae.  Bridges’s gayfeather.  Endemic to the Carrizo and adjacent Eocene sand formations in central Texas (Anderson, Bastrop, Freestone, Grimes, Hardin, Henderson, Houston, Lee, Limestone, Nacogdoches, Robertson, San Augustine, Shelby, Van Zandt, Walker, Williamson, Wood Co.).  Distinguished by white, petaloid, recurving floral bracts.  [Mayfield, M.H.  2003.  The varieties of Liatris elegans (Asteraceae).  Sida 20:597-603.]  REGION B. Gulf Prairies and Marshes (Carrizo) (endemic)


* Liatris glandulosa Nesom & O'Kennon, Sida 19(4):778-786, figs. 3-4, 6 [map]. 2001.  Asteraceae.  Sticky gayfeather.  Known only from limestone outcroppings and prairies from four counties in north-central Texas.  One population (at the the locality) is located at the Spring Creek Forest Preserve in Dallas County and is currently protected.  (TEXAS: Bosque Co., Dallas Co., McLennan Co., Travis Co.).  [Nesom, G.L. and R.J. O’Kennon.  2001.  Two new species of Liatris series Punctatae (Asteraceae: Eupatorieae) centered in north-central Texas.  Sida 19:767–787.]  REGION E. Cross Timbers and Prairies (endemic)


* Nemophila sayersensis B.B. Simpson, Neff, & Helfgott, Lundellia 4:31. 2001.  Hydrophyllaceae.  Sayers baby-blue-eyes.  Restricted to fossil beach sand areas in central Texas, contrasting with the more common and widespread N. phacelioides, which occurs on sandy loam soils in areas moist and shady in the spring.  (TEXAS: Bastrop Co., Brazos Co., Burleson Co., Gonzales Co., Grimes Co., Guadalupe Co., Lee Co., Robertson Co., Washington Co.).  [Simpson, B.B., D.M. Helfgott, and J.L. Neff.  2001.  A new cryptic species of Nemophila (Hydrophyllaceae) from Texas and the leptotypification of N. phacelioides Nuttall.  Lundellia 4:30-36.]  REGION B. Gulf Prairies and Marshes (Carrizo) (endemic)


* Orobanche riparia L.T. Collins, J. Bot. Res. Inst. Texas 3: 7. 2009.  Orobanchaceae.  River broomrape.  In Texas in Brewster and El Paso counties and in the northern Panhandle.  A 1973 Ph.D. dissertation by Collins indicated “formal recognition of two ecological races within O. ludoviciana sensu stricto with different host ranges: one inhabiting uplands and the other confined to bottomlands associated with major river systems.  Recent additional investigations have revealed further evidence supporting recognition of these two races as distinct taxonomic entities.  The present paper therefore discusses the morphological distinctions between them; it proposes retention of the upland form as O. ludoviciana and recognition of the bottomland form as a distinct species, O. riparia, sp. nov.”   [Collins, L.T., A.E.L. Colwell, and G. Yatskievych.  2009.  Orobanche riparia (Orobanchaceae), a new species from the American Midwest.  J. Bot. Res. Inst. Texas 3: 3–11.]  


* Packera texensis O’Kennon & Trock, Sida 20:945, figs. 1, 2 [map]. 2003.  Asteraceae.  Central Texas groundsel.  Endemic to the granitic sands of the Central Mineral Region with the Edwards Plateau.  (TEXAS: Callahan Co., Gillespie Co., Llano Co., Mason Co.).  Packera texensis arises quickly from evergreen winter rosettes during the January rains and blooms as early as the first week in February,” continuing through March.  [Trock, D.K. and R.J. O’Kennon.  2003.  A new species of Packera (Asteraceae: Senecioneae) from the Edwards Plateau of Texas.  Sida 20:945–951.]  REGION G. Edwards Plateau (endemic)


* Phaseolus texensis A. Delgado and W.R. Carr, Lundellia 10:13, figs. 1-3. 2007.  Fabaceae.  Texas pea.  Known only from rocky canyons of the eastern and southern Edwards Plateau of central Texas. (TEXAS: Bandera Co., Kerr Co., Travis Co., Uvalde Co.).  Its distinction is supported by morphological and molecular-phylogenetic data and a discrete and limited geographical range.  [Delgado-Salinas, A. and W.R. Carr.  2007.  Phaseolus texensis (Leguminosae: Phaseolinae): A new species from the Edwards Plateau of central Texas.  Lundellia 10:11-17.]  REGION G. Edwards Plateau (endemic)


* Philadelphus serpyllifolius var. intermedius B.L. Turner, Lundellia 9:37. 2006.  Hydrangeaceae.  (TEXAS: Brewster Co., Pecos Co.).  [Turner, B.L.  2006.  Species of Philadelphus (Hydrangeaceae) from trans-Pecos Texas.  Lundellia 9:34-40.]  REGION J. Trans-Pecos, Mtns and Basins (endemic)


* Prenanthes carrii Singhurst, O’Kennon, & Holmes, Sida 21:187, figs. 1 [map], 2. 2004.  Asteraceae.  Carr’s Rattlesnake-root.  Endemic to the southwest Edwards Plateau and occurs primarily in rich soils in woodlands at the upper reaches of canyons where springs flow due to geologic contacts.  (TEXAS: Bandera Co., Gillespie Co., Kerr Co., Real Co.).  [Singhurst, J.R., R.J. O’Kennon, and W.C. Holmes.  2004.  The genus Prenanthes (Asteraceae: Lactuceae) in Texas. Sida 21:181–192.]  REGION G. Edwards Plateau (endemic)


* Pseudognaphalium austrotexanum Nesom, Sida 19(3):507-511, figs. 1, 2 [map]. 2001.  Asteraceae.  South Texas false cudweed.  Apparently a narrowly distributed species from coastal and near-coastal localities in southeastern Texas and northeast Mexico.  Probably endemic to open coastal grasslands and other coastal habitats with one record from Brazoria National Wildlife Refuge.  Not collected in Texas since 1981.  (NUEVO LEON.  TEXAS: Brazoria Co., Brazos Co., Brooks Co., Frio Co., Harris Co., Jim Hogg Co., Kenedy Co., Matagorda Co., San Patricio Co., Uvalde Co.).  [Nesom, G.L.  2001.  Pseudognaphalium austrotexanum (Asteraceae: Gnaphalieae), a new species from southeastern Texas and adjacent Mexico.  Sida 19:507–511.]  REGION F. South Texas Plains


* Schiedeella arizonica P.M. Brown, N. Amer. Orchid J. 6:3. 2000.  Orchidaceae.  Indian braids, Arizona red-spot.  The type locality in Pima Co., Arizona.  ARIZONA: Cochise, Graham, Greenlee, Pima, Santa Cruz cos.  NEW MEXICO: Grant, Lincoln, Otero.  TEXAS: Culberson Co., Jeff Davis Co.  [Brown, P.M. and R. Coleman.  2000.  Schiedeella arizonica, a new species from the southwestern United States.  N. Amer. Native Orchid J. 6:3-17.]  REGION J. Trans-Pecos, Mtns and Basins


* Senecio quaylei T.M. Barkley, Sida 19(2):286-289, figs. 1-2. 2000.  Asteraceae.  Quayle’s groundsel.  A putatively rare annual endemic of north-central Texas known only from three sandy sites in the vicinity of Mineral Wells in Parker Co.: an abandoned railroad right-of-way, a recently burned prairie, and a disturbed field.  Flowering March through April.  It is regarded by Turner (pers. comm. and in the Atlas of the Vascular Plants of Texas) as a form of S. ampullaceus, from which it differs in its larger size (perhaps gigas) and completely glabrous stems and leaves.  [Barkley, T.M.  2000.  Senecio quaylei (Asteraceae: Senecioneae), a new species from north-central Texas, U.S.A.  Sida 19:285–289.]  REGION E. Cross Timbers and Prairies (endemic)


* Solidago juliae Nesom, Phytologia 67:445, fig. 1 [map]. 1989 [not included in Hartman & Nelson 1998].  Asteraceae.  Julia's goldenrod.  A species of the Edwards Plateau, extending westward and southward into the trans-Pecos region and northern Mexico.  Very true to wet soil along the rocky edges of streams and rivers with permanent water.  (CHIHUAHUA.  COAHUILA.  TEXAS: Bandera Co., Blanco Co., Brewster Co., Gillespie Co., Kendall Co., Kinney Co., Presidio Co., Real Co., Reeves Co., Travis Co., Uvalde Co., Val Verde Co.).  [Nesom, G.L.  1989.  The taxonomy of the Solidago canadensis (Asteraceae: Astereae) complex in Texas, with a new species from Texas and Mexico.  Phytologia 67:441–450.] Synonym = Solidago canadensis var. canescens A. Gray.  REGION G. Edwards Plateau (and 9)


* Solidago wrightii var. guadalupensis Nesom, Phytologia 90: 00. 2008.  Asteraceae.  Guadalupe Mountains Goldenrod.  A race near the southeastern corner of the range of the species differs from typical S. wrightii in its lanceolate to linear-lanceolate leaves and glabrate achenes.  It occurs at 4800–7100 feet elevation and grows in cliff crevices, slopes and ridges, mine tailings, canyon bottoms, gravel alluvium of stream beds, always over limestone, in vegetation of acacia-juniper-dasylirion-lechuguilla, oak, oak-maple, and yellow pine-maple-hophornbeam-madrone. Flowering (May–)Jun–Aug(–Sep).  (NEW MEXICO: Chaves Co., Eddy Co.; TEXAS: Culberson Co.).  REGION J. Trans-Pecos, Mtns and Basins.  [Nesom, G.L.  2008.  Taxonomic review of Solidago petiolaris and S. wrightii (Asteraceae: Astereae).  Phytologia 90: 21-32.] 


* Spiranthes sylvatica P.M. Brown, N. Amer. Native Orchid J. 7(3):194, figs. 1-4. 2001.  Orchidaceae.  Woodland ladies-tresses.  “Differing from Spiranthes  praecox by its creamy-green coloration, larger flowers and woodland habitat.”  Type from Levy Co., Florida.  “Range: eastern Texas (Jasper Co., Sabine Co.) eastward along the coastal plain, throughout central and northern Florida and northward along the coastal plain to southeastern Virginia. [Brown, P.M.  2001.  Recent taxonomic and distributional notes from Florida 11.  N. Amer. Orchid J. 7:192-205. 2001.]  REGION A. Pineywoods


* Spiranthes eatonii P.M. Brown, N. Amer. Orchid J. 5:9, figs. 1, 2. 1999.  Orchidaceae.  Eaton’s ladies-tresses.  The type locality in Dade Co., Florida.  “Habitat: dry to damp open pinelands often with Aristida sp., Seranoa sp., Pinguicula sp., Drosera sp., and Polygala sp.  Range: eastern Texas (Jefferson Co.), southern Louisiana, southern Alabama, southern and eastern Georgia, and north to Virginia primarily on the coastal plain.”  [Brown, P.M.  1999.  Recent taxonomic and distributional notes from Florida 1.  N. Amer. Native Orchid J. 5:5-15.]  REGION A. Pineywoods


* Stanleya pinnata var. texana B.L. Turner, Lundellia 7:39. 2005.  Brassicaceae.  Texas golden prince’s plume.  Var. texana is distinguished from other varieties of S. pinnata in having smaller flowers, nearly glabrous gynophores, and lanceolate entire leaves (never deeply divided or pinnate). It is isolated from the closest known populations of S. pinnata by some 500 km and is represented by small populations largely restricted to bare gypso-calcareous outcrops in southern Brewster Co.  [Turner, B.L.  2005.  A new variety of Stanleya pinnata (Brassicaceae) from the Big Bend Region of Trans-Pecos, Texas.  Lundellia 7:39-43.]  REGION J. Trans-Pecos, Mtns and Basins (endemic)


* Triphora trianthophorus (Sw.) Rydb. var. texensis P.M. Brown & R. Pike, N. Amer. Native Orchid J. 12:5, figs. 1-6. 2006.  Orchidaceae.  Texas three-birds orchid.  Known only from the type locality in Davy Crockett National Forest in Houston Co., the population growing along the bottom and sides of “a short, shallow, intermittent drainage slope having very little vegetation and abundant mulch” in oak-hickory woods.  Differing from typical T. trianthophorus var. trianthophorus in the ovate lip, smaller, snow-white flowers with a lime-green beard, and bright green stems and foliage.  Holotype: BRIT.  [Brown, P.M. & R. Pike.  2006.  Triphora trianthophora var. texensis (Orchidaceae), a new variety endemic to texas.  N. Amer. Native Orchid J. 12:4–10.]  REGION A. Pineywoods (endemic)


* Wissadula parvifolia Fryxell, Lundellia 10:3, fig. 2. 2007.  Malvaceae.  Small-leaved yellow velvet-leaf.  Known only from Hidalgo Co., where it occurs on the Tres Corales Reserve (Nature Conservancy), locally common in disturbed sites.  [Fryxell, P.A.  2007.  Two new species of Malvaceae from Sonora, Mexico and Texas.  Lundellia 1-6.]  REGION F. South Texas Plains (endemic)


* Xanthisma spinulosum var. austrotexanum B.L. Turner (stat. & nom. nov., based on Haplopappus texensis R.C. Jackson), Phytologia 89:350, fig. 1 [map]. 2007.  Asteraceae.  South Texas goldenaster.  These plants were recognized at specific rank in 1962 by Jackson but not subsequently included in active taxonomic accounts of the Texas flora (usually treated as a synonym of Machaeranthera pinnatifida).  Var. austrotexanum apparently intergrades with var. spinulosum in their zone of contact.  (TEXAS: Brooks Co., Hidalgo Co., Jim Wells Co., Kleberg Co.).  [Turner, B.L.  2007.  Xanthisma spinulosum var. austrotexanum (Asteraceae: Astereae), an endemic of southernmost Texas.  Phytyologia 89:349–352; G.L. Nesom and B.L. Turner. Taxonomic review of the Xanthisma spinulosum complex (Asteraceae: Astereae).  Phytologia 89:371–389.]  REGION F. South Texas Plains (endemic)


* Yucca cernua E.L. Keith, Sida 20:892, figs. 1-2. 2003.  Agavaceae.  Nodding yucca.  Apparently is restricted to brownish, acidic clayey soils of the Redco Soil Series in Jasper and Newton counties.  One large population of ca. 1000 plants and six small populations of less than 100 plants each are known.  The epithet refers to the characteristic tendency of the inflorescence branches to recurve and droop as they lengthen, an apparently distinctive feature separating it from all other Yucca species.  [Keith, E.L.  2003.  Yucca cernua (Agavaceae: series Rupicolae), a new species from Newton and Jasper counties in eastern Texas.  Sida 20:891-898.]  REGION A. Pineywoods (endemic)


Guy Nesom

3 December 2009