Plante Lindheimeriane. 33 
amplexicaulibus repando-dentatis subintegrisve ; petalis obova- 
to-spathulatis sepala pilosa colorata subduplo superantibus ; 
filamentis e basi inflata abrupte subulatis ; antheris linearibus ; 
ovarii loculis 3—4-ovulatis ; stylo cum stigmate globoso siliculis 
Vix stipitatis globosis glabris breviore ; seminibus subsex mar- 
ginatis. — Dry prairies near San Felipe. Feb. — March. 
218. Nasrurtiom Tanacetiro.ium, Hook. & Arn. Sandy 
bottoms. February and March.— Siliques sometimes spread- 
ing or even reflexed: in other cases considerably incurved and 
erect. 
219. Sisymprium canescens, Nutt. A very canescent form. 
April — May. 
220. Poryeaua atBa, Nutt. (P. Beyrichii, Torr. & Gr.) 
Prairies. April— May. Lower leaves sometimes obovate- 
spatulate. 
221. Hypericum macuuatoum, Walt., Torr. & Gr. Margin 
of woods from Galveston to the Colorado. May. 
222. Paronycura picuotoma, Nutt. Sandstone rocks near 
Industry. Sept. — Oct. 
223. Arenaria Pitcueri, Nutt. Prairies. March. Petals 
emarginate. 
224. Pretea TRirouaTA, 6. Motus, Torr. & Gr. Fl. I. p. 
680. Along water-courses. Houston to the Colorado. April. 
225. Adscutus Pavia, 8. piscotor, Torr. & Gr. Thickets 
along the banks of Mill creek. March. 
226. Sapinpus mareinatus, Willd. Popularly called 
«“ Wild China-tree,” forming trunks about a foot in diameter, 
in fertile woods. The specimens with ripe fruit were gath- 
ered in August. 
227. Ruamnus Carortinianus, Walt. Small trees forming 
thickets in wet places on the prairie west of San Felipe; flow- 
ering in May. With it there is a small-leaved variety, with 
the flowers more crowded, &c. 
228. R. vanceouatus, Pursh. Thickets. March. 
229. Trerurosia onoprycHoipes, Nutt.; with short and 
rusty pubescence, «&c., diflering somewhat from the variety 
distributed under No. 32. West of San Felipe. May. 
