VI. PLANTS ^\"RIGHTIAN.^. H 



aceous one subtending the lowest pedicel. Calyx violet-purple, open ; the sepals 5 

 lines long, oblong-lanceolate, obtuse, not saccate at the base, nor carinatc. Petals 

 purple ; the claw as long as the calyx ; the ample and spreading lamina obovate- 

 orbicular, 5 lines long. Anthers linear, elongated, sagittate at tlie l)ase, the apex 

 recurved. Siliques erect, straight or slightly falcate, 2 to 3 inches long, 2 or 3 

 lines wide, tipped with a very short style or a subsessile two-lobcd stigma (the 



lobes alternate with the placenta?) : valves flat. Seeds orbicular, broadly winded. 



Allied to S. bracteatus, and especially to S. obtusifolius. Hook., which is the same 

 as S. maculatus, Nutt. (a prior name, though not a very good one) ; the leaves beinw 

 either acute or obtuse, the uppermost more commonly acute. From botli, the pres- 

 ent species is at once distinguished by its broad and flat pods, which are fully 2^ 

 lines wide, even when less than two inches in length. Subjoined are the contrasted 

 characters of the two allied species.* 



S. CARiNATUS (sp. nov. Wright, in Jitt.): glaberrimus, glaucus ; foliis radicalibus 

 caulinisque inferioribus sa'pissime runcinato-pinnatifidis, superioribus iutegerrimis 

 oblongis seu lanceolatis basi profunde cordata amplexicaulibus sinu clauso ; calvce 

 purpureo urceolato 5-angulato, sepalis carinatis basi saccatis ; petalis linearibus cris- 

 patulis purpureo pictis paullo cxsertis antheras vix supcrantibus ; siliquis immatu- 

 ris lato-linearibus erectis. — Stony hills, in a canon, on the road to Texas, about 60 

 miles below El Paso; March. (1312.) — Root annual or biennial. Stems one or 

 two feet high, simple or sparingly branched. Radical and lower leaves obovatc or 

 oblong, 2 or 3 inches long, narrowed into a short petiole, either toothed, lyrate, or 

 runcinate-pinnatifid ; the upper all strongly clasping by broad and rounded lobes. 

 Raceme loosely flowered ; pedicels ascending, 2 to 5 lines long, bractless, or tlie lowest 

 occasionally with a foliaceous bract. Flowers half an inch long ; the strongly sac- 

 cate and carinately 5-angular calyx deep purple. Petals witli the recurved limb 

 scarcely dilated, obtuse, rose-color veined with purple. The forming pods are from 

 one to two inches long, a line and a half broad, flattish, nearly straight. Stigma 

 sessile, 2-lobed. — A striking new species of the section Euclisia. 



DRYOPETALON, Nov. Gen. 



Calyx basi injequalis ; sepalis oblongis, 2 majoribus basi subsaccatis. Petala 

 obovato-spathulata, inciso-5 - 7-lobata, in unguem brevem attenuata. Filamenta su- 

 bulata, edentula : anthera; oblonga?, sagittata\ Stigma sessile, subglobosum, emargi- 

 natum. Siliqua filiformis, teres, baud stipitata, polysperma ; septo cnervi ; valvis 

 3-nerviis nervo medio carinatis. Semina in loculis uniserialia, e funiculo libero 



* Streptanthtjs maculatus {Kutt. ill Jour. Ara/l. Philad. .5. ;j. l.^l. /. 7): glaberrimus, glaucus ; 

 foliis caulinis cordato-oblongis amplexicaulibus sinu clauso (obtusis v. superioribus acutis), iufiiiiis ohova- 

 tis; siliquis erectis anguste linearibus subtetragonis elongatis. — S. obtusifolius, Huuk. Bot. Mag, t. 3;il7; 

 Torr. Sf Gray, Fl. 1. p. 76 ; Gray, Gen. HI. 1. /. 60./. 4-7. Brassica Wasliitana, Muld. Cat.} Stan- 

 leya Washitana, DC. ? 



StreptAxNthus bracteatus (Gray, Gen. 111. 1. /. GO, cV PI- Lliidlt. -2. j>. 1 l;i) : glaberrimus, vix glau- 

 cus ; foliis caulinis cordato-amplcxicaulibus, infimis obovatis nunc ilcnticulatis sa-pe lyratis lobis dentatis ; 

 pedicellis bracteatis ; siliquis angustissime linearibus pra'longis subfalcatis patentissiinis. 



