I 



t 



VI. 



PLANT^ ^TRIGHTIANJE 



11 



subtending the lowest pedicel. Calyx violet-purple, open ; the scpals 5 



ng, oblong-lanceolate, obtuse, not saccate at the base 



Pctals 



purple ; the claw as long as the caly 

 orbicular, 5 lines lon 



ample and spreading 



g. Anthers linear, elongated, sagittate at the base, the apex 



ed, 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-lobed stigma (the 



lobes alternate with the placent*} 



flat. Seeds orbicular, broadly winged 



AUied to S. bracteatus, and especially to S. obtusifolius, Ilook, which 



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



either acute or obtuse, the uppermost more commonly 



ent species is at once 



acute. From both, the pres 

 distinguished by its broad and flat pods, which are fully 2 



lines wide, even when less than two inches in length 

 characters of the two allied snecies.* 



Subjoined are the contrasted 



S. CARiNATUs (sp. nov. Wriglit. in litt) : glaberrimus, glaucus ; foliis radicalibus 

 caulinisque inferioribus ssepissime runcinato-pinnatifidis, superioribus intee^crrimis 



oblongis seu lanceolatis basi profunde cordata amplexicaulibus 



calyce 



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

 patulis purpureo pictis paullo exsertis antheras vix superantibus ; siliquis immatu- 



linearib 



Stony hills, in a canon, on the road to Texas, about 



miles below EI Paso ; March 



(1312.) 



Poot annual 



Stems 



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

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

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

 Raceme loosely flowered ; pedicels ascending, 2 to 5 lines long, bractless, or the lowesl 



occasionally with a foliaceous bract 

 cate and carinately 5-anguIar cal] 



half 



o 



the strongh' 



deep purple. Petals with the recurved limb 



ily dilated, obtuse, rose-color veined 



The forming pods are from 



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

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



Sti 



gma 



DRYOPETALON, Nov. Gen. 



Calyx basi insequalis; 



pal 



oblongis, 2 majoribus basi subsaccatis. Petala 



obovato-spathulata, inciso-5 - 7-Iobata, in unguem brev 



Filamenta 



bulata, edentula : antherse oblongse, sagittatse. Stigma sessile, subglobosum, emargi- 

 natum. Siliqua filiformis, teres, haud stipitata, polysperma ; septo enervi ; valvis 

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



* Streptanthtjs maculatus {Nutt. in Jour. Acad. Philad. 5. p. 134. t. 7) : glaberrimus, glaucus; 

 foliis caulinis cordato-oblongis amplexicaulibus sinu clauso (obtusis v. supcrioribus acutis), infimis obova- 

 tis; siliquis erectis anguste linearibus subtetragonis elougatis. — S. obtusifolius, Hook. Bot. Mag, t. 3317; 



Torr. 8j- Gray, Fl. 1. p. 76 ; Gray, Gen. Hl 1. t. 60./. 4-7. Brassica Washitana, Muhl. Cat.7 Stan- 



leya Washitana, DC.7 



Streptamthus bracteatus ( Gray, Gen. lll. 1. 1. 60, 8f Pl. Lindh. 2. p. 143) : glaberrimus, vix glau- 

 cus ; foliis caulinis cordato-amplexicaulibus, infimis obovatis nunc denticulatis ssepe lyratis lobis dcntatis ; 

 pedicellis bracteatis ; siliquis angustissime linearibus pnrlongis subfalcatis patentissimis. 



