150 Planta Lindheimeriane. 
a form of the same species, or perhaps of D. cuneifolia. To 
the latter, as a slender form, or to D. micrantha, would seem 
to belong D. filicaulis, Scheele, l. c. 
CAPPARIDACEZE. 
339. POLANISIA TRACHYsPERMA, Torr. & Gr. Fl. 1. p. 669 ; 
Gr. Gen. lll. 1. t. 19, & Pl. Fendl. p. 10. Sandy soil, on 
the Colorado and Pierdenales. July, October. This differs 
from P. uniglandulosa, as I have formerly remarked, princi- 
pally in the smaller size of the flowers. It is likely to prove 
only a northern form of that species. 
POLYGALACEZE. 
333. Porveana Linpueimeri (sp. nov.): pubescens; cau- 
libus e radice incrassata lignea plurimis foliosis ; foliis alternis 
subsessilibus coriaceis utrinque reticulatis nitidis cuspidato- 
mucronatis, imis obovatis, superioribus gradatim ovatis oblon- 
gis et lanceolatis; racemis terminalibus demumque lateralibus 
laxifloris; rachi geniculato-flexuosa bracteis parvis ad nodos 3 
persistentibus squamosa ; pedicellis brevissimis; sepalo supe- 
riore bracteiformi a flore subdistante alis spathulatis vix di- 
midio brevioribus; carina imberbi crista calcariformi aucta; _ 
capsula immatura pilosula. — Rocky declivities of the upper 
Guadaloupe and Pierdenales. June, August. Also met 
with by Mr. Wright, from the Colorado to the Rio Grande. — 
Bast miot unlike that at Krameria lanceolata, long, covered 
with a thick reddish bark. Stems a little woody at the base, 
Sect. IL. Atyssomes, DC. Silicula ovata, valvis convexis rigidiusculis. 
19. V. arema, Nutt. in Torr. d» Gr. Fl. 1. p. 102; Gr. Pl. Fend. ps 
V.lasiocarpa, Hook. ined. (Vide Bot. Mag. sub t. 3464) is unknown tome. I 
ii en seen no Texan species with other than glabrous früit. 
V. argentea, Schauer in Linnea, 20, p. 720, when the ——— MÓ€0Ó may 
prove to be a species of Synthlipsis. 
V. didymocarpa, Hook., and V. Geyeri, Hoc Hook. constitute the genus Physaria. - 
The Iberis, n. sp.? Torr. im Ann. Lye, New York, mido iu 
Collection, is Dithyrea Wislizeni, Engelm. in Wis. Rep. p. 96, which has recently . 
been met met with, in flower only, on the Upper Canadian, by Mr. Gordon, 
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