178 CRUCIFEllzE. Thelypodiurti. 



upward : pods slender, subterete, attenuate at the apex, sometimes a little pubescent when 

 young. — Fl. Francis. 263. Streptanthus Jlavescens, Hook. Ic. t. 44. — Mountains of Central 

 California. 

 T. Leramoni Greene. Smooth glaucous annual, becoming rather stout : lower leaves 

 large, 6 to 8 inches long, 2 to 3 inches broad, tapering to an obtusish point, abruptly con- 

 tracted at the base, sinuate-dentate ; several of the teeth especially toward the base much 

 larger than the rest, irregular ; petioles half inch long ; upper leaves lance-linear, attenuate 

 at both ends: pale purple flowers and fruit closely as in the preceding. — West Am. 

 Scientist iii. 156, & Fl. Francis. 263. — Central California, on adobe hills near San Luis 

 Obispo, Lemmon, and, ace. to Prof. Greene, abundant in grain fields near Tracy. This 

 species in floral characters is exceedingly close to the preceding ; in foliage, however, very 

 different. Intermediate forms are to be expected. 



§ 3. Heterothrix. Stigma entire or subentire, circular in outline or slightly 

 elongated over the placentae : joubescence at least in part of branched hairs. 



T. micranthum, Watson. Erect biennial, densely stellate-pubescent especially below : 

 stem usually slender ; branches elongated, virgate : lowest leaves oblanceolate, shallowly 

 toothed, obtuse, attenuate below to slender petioles ; upper leaves lance-linear, subentire ; 

 floral linear : racemes elongating before the opening of the flowers ; pedicels short, ascend- 

 ing : buds subglobose : sepals short and broad, purple, sometimes pubescent, little exceeded 

 by the whitish (?) petals: pods 9 to 16 lines long, nearly terete, ascending or spreading; 

 valves 1 -nerved ; style very short. — Proc. Am. Acad. xvii. 321. T. longifoUnm, Rothrock 

 in Wheeler, Rep. 65, not Wats. Streptanthus micranthns. Gray, PI. Fendl. 7. S. longifoUus, 

 Gray, PI. Wright ii. 10, not Benth. — Mountains of S. W. Texas, Havarcl, Nealley ; New 

 Mexico, Fendter, Wright ; Arizona, Rothrock, Priiigle, Lemmon. (Mex., Schaffner, Palmer, 

 Pringle. ) 



T. longifolium, Watson. Erect, slender, densely pubescent IjcIow and somewhat hispid 

 with In-anched hairs : lower leaves fugacious, long-lanceolate, repand-dentate ; upper leaves 

 long and very narrowly linear, entire : inflorescence as in the last but flowers larger, 2 to 2i 

 lines long : sepals short-oblong, obtuse, usually deep-purple : siliques at maturity 2h to 3-^ 

 inches long, slender, deflexed, more or less attenuate to a slender style. — Bot. King Exp. 25, 

 & Proc. Am. Acad. xvii. 321. Streptanthus longifuUus, Benth. PI. Hartw. 10. — New Mexico, 

 Fendler; Arizona, Lemmon. (Mex., Coulter, Hartweg, Schaffner, Sealon.) 



49. STANLifiYA, Nutt. (Dedicated to Lord Edward Stanley, 1779- 

 1849, distinguished as an ornithologist and at one time president of the Linnean 

 Society.) — A small genus of stout western plants, usually glabrous and chiefly 

 distinguished from the neighboring genera by having elongated clavate buds, 

 cream-colored or yellow flowers, and loug-stiped ovaries. — Gen. ii. 71 ; DC. 

 Prodr. i. 200; Gray, Gen. 111. i. t. 65 ; Benth. & Hook. Gen. i. 80. [By B. L. 

 Robinson.] 



* Middle cauline leaves sessile, auriculate-clasping at the base, not deeply lobed. 

 S. viridiflora Nutt. Stout, glabrous, mostly simple, erect or somewhat decumbent, 1 to 4 

 feet high : stem angulate : leaves thickish ; the basal and lower cauline ovate to oblanceo- 

 late, sometimes a little angled or runciuately 1-2-toothed or even pinnatifid at the base, 

 attenuate below into long flat winged and often somewhat toothed petioles : middle cauline 

 lanceolate, hastate, acute, entire, gradually reduced upward : raceme long, usually simple ; 

 pedicels in fruit stoutishi 3 to 4 lines long, divaricate : buds becoming 7 lines long and scat- 

 tered before opening by the rapid prolongation of the axis ; flowers greenish. — Nutt. in 

 Torr. & Gray, Fl. i. 98 ;' Gray, PI. Fendl. 9 ; Wats. Bot. King Exp. 25 ; Jones, Zoe, iii. 283. 

 The suggested S. coUina of Jones, 1. c, appears to be the typical form of the species. — 

 Rocky Mountains of Wyoming and S. Montana, westward to Oregon and Nevada; fl. May 

 to July. 



Var. COnf ertiflora, Robinson, n. var. Stems terete : buds shorter, 4 to 5 lines long, 

 densely packed together until they open ; flowers smaller and much more numerous : fruit- 

 ing pedicels very slender, 6 to 7 lines long, crowded, divaricate. — Base of Stein's Mountain, 



