448 PROCEEDINGS OF THE ACADEMY OP 



Description of NEW PLANTS from Texas, 



BY S. B. BUCKLEY. 



These plants were collected by the author while engaged in the State Geo- 

 logical Survey of Texas, during 1860 and '61. Specimens of them are in the 

 ^herbarium of the Academy of Natural Sciences at Philadelphia, and also in 

 the herbarium of Elias Durand, Esq. 



Ranunculaceje. 



Clematis Texensis, n. s. Caule scandente, foliis pedunculatis, integris, 

 Iato-ovatis, acuminatis, mucronatis, breviter petiolatis, foliis caulinis impari- 

 pinnatis,longe petiolatis, foliolis pusillis 1-3 lobis, segmentis lanceolatis,acutis, 

 pedunculis uninoris, sepalis coriaceis, apice parum reflexis ; fructus? 



On the Colorado River above Austin. 



Leaves thin, not coriaceous. Whole plant smooth ; peduncles 2-2^ inches 

 long; flowers about an inch long, subconical, purple, floral leaves 2-4, near 

 the junction of the peduncle with the stem large, crowded, and on petioles 2-3 

 lines long, at the base of which are 2-4 spathular bracts. The unequally 

 pinnated stem leaflets small, 1-3 lobed, segments lanceolate and acute, part 

 of these stem leaflets are on long tendril like petioles. Flowers in May. 



Clematis Coloradoensis, n. s. Caule scandente, ramis rotundis, parce 

 pubescentibus, foliis petiolatis, integris, vel 2-3 lobis segmentis ovato-lanceo- 

 latis. acuminatis, utrinque glabris, pedunculis axillaris, nudis, unifloris, sepalis 

 coriaceis apice reflexis, fructus ? 



North-western Texas near the Colorado River, May. 



Leaves very thin and veins not prominent, mostly 3-lobed, sinuses of the 

 lobes narrow, and extending from one-third to two-thirds of the leaf; lobes 

 acute and mucronate, the middle one largest. Some of the leaf bearing 

 branches twisted, and tendril-like ; peduncles leafless, axillary 3 inches long 

 and one-flowered, flowers inch long, leaflets 12 inches long and 1-li wide ; 

 foot stalks of leaflets ^ an inch in length. Stem, petioles and peduncles 

 sparingly pubescent. 



Crucifer^e. 



Streptanthus (Arabis) glabrifolius, n. s. Glaberimus, caule erecto, 

 3-4 pedali, parce ramoso, foliis oblongis, lineari-lanceolatis, basi attenuatis, 

 breviter petiolatis, acutis, vel subobtusis, petalis spathulatis, (roseo-purpureis,) 

 unguibus calyce subdimidio excedentibus, siliquis immaturis teretiusculis, 

 stylis brevissimo obtusis. Seminibus? 



Sandy post oak woods north of Fort Belknap. 



Stem erect, and sparingly branched, 3-4 feet high ; flowers crowded near the 

 top on pedicels about of an inch long ; petals f lines long ; leaves 35 inches 

 long and about J of an inch wide ; petioles 2-4 lines long. Lower leaves sub- 

 obtuse, upper leaves linear acute. 



Streptanthus (Arabis) Brazoensis, s. nov. Subglaucescens, foliis 

 caulinis lanceolatis, radicalibus longe petiolaris, oblongo-ovatis ad basi parce 

 lyrato sectis et repando dentatis, dentibus submucronatis ; floribus pusillis, 

 erectis ; petalis oblongo-spathulatis, albidis et purpureo-tinctis, calycem paulo 

 excedentibus, filamentis liberis, paulo exsertibus, siliquis lato linearibus, 

 in loculis circe 20 seminibus latissime alatis septo aequalibus. 



On the Upper Brazos near Fort Belknap. May. 



Plant 1-2 feet high ; leaves l-2 inches long, the upper ones lanceolate, en- 

 tire, acute and attenuate at the base into a petiole 4 lines long, with 1-2 linear 

 bracts at its base. Radical leaves lyrate, petioled, subpubescent, petioles an 

 inch long, flowers very small pedicels 4 lines long, seeds circular. 



[Dec. 



