LEGUMIN08.E. (PULSE FAMILY.) 71 



S-flowered: flowers only 4 or 5 lines long, apparently purple: jKxi hardly \ mi h 

 long, obloug-ovate, anercous-jmbescent, not at all sttpitale, l/u- ventral suiurt tnodrr- 

 atel'i introjiexed. — Vvoc. Am, Acad. x.\. 3. A 8pecie.s of S. California and 

 Utah, collected on A(|uarius IMateau, Utah, by /.. /'. Ward; proUblv to 

 be found within our southwe.stern boundaries. 



++ ^ Pod oblung or narroicer, nut bladder ij. inflated, coriaceous, nearl,/ or qtiite 

 2-celled: scape I to Z-Jiowered. 



8. O. Parryi, CJray. Silky-canescent : leaves and scapes alnjut a Mpan 

 high: leaflets 7 to 9 pairs, oblong-lanceolate (2 or 3 linos long) : calyx Khort, 

 cinereous-pubescent: pod nearly ^ inch long, terete with a .stnjiig ventral 

 groove. grayish-i)ubescent, not at all stipitate. — Proc. Am. Acad. xx. 4. 

 0. arctica of Hall & Harbour's collection, no. 143. O. C'ralcnsis, var. immila, 

 of Western Reports. Mountains of Colorado near the limit of trees. 



^H. ++ ++ Pod nearhj terete, turgid, but not bladder i/-membranareous, not stipitate or 



rarelt/ obscurely so: scape capitatehj or spicately several to many-jiowered. 



= ^fore or less glandular viscid, at least the calyx and commonly the jiod. 



9. O. Viscida, Nutt. Leaflets numerous and small (2 to 4 lines long), 

 thickish, oval or oblong, often pubescent when young, at maturity green and 

 glabrate : flowers in a dense oblong head or at length in a short spike, loss 

 tlian ^ inch long: calyx villous and with sessile glands usually evident : jtod 

 small (3 to 5 lines long), puberulent, oblong, thin-chartaceous, half 2-celled, 

 the small beak or point straight. — Torr. & Gray, Fl. i. 341. lu the raountain.s 

 from British America to Colorado ; common in Wyoming. 



= = Not glandular nor viscid : leaves more or less silky at least ivhen younq. 



10. O. monticola, Gray. Loosely silky-villous, at least the sca|>es (5 to 

 9 inches high) and calyx: leaflets sometimes glabrate, oblong or lanceolate 

 (3 to 7 lines long): spilce obhmg or c>jlindraceous, dense even in fruit : Jloiiy r 

 hardly ^ inch long : pod ovate-oblong, between membranaceous and chartarmtis, 

 ^ to ^ inch long, tipped with a straight point, one-celled with jio introflexion 

 of the ventral suture, or nearly half 2-celled, silky-ranrsrent. — Pn>o. Am. 

 Acad. XX. 6. O. cain/xstris of Hook. Fl Bor. Am. in part. Mountains of 

 Wyoming, South Dakota, and northward. 



H. O. Lamberti, Pursh. Commonly taller as well as larger (the sca|)Os 

 often a foot or more high), silky- and mostly silvery-pubescent, .somotime?* 

 glabrate in age : leaflets from oblong-lanceolate to linear (4 to 16 lines long) : 

 sjtike sometimes short-oblong and densely flowered at le.ist when vonng. often 

 elongated and sparsely /lowered : flowers mostly large (t^ften an inch long, but 

 sometimes much smaller), variously colored: pod either narrowly or broadly 

 oblong, sericeous pubescent, Jirm-coriaceous, ^ inch or more long, im/trrfrctlif 

 2-rp//er/. — Includes 0. campcsiris of Hook. Fl. Bor. .Vju. in part. Common 

 along the Great Plains from the Siiskatchewan and Minne.>it)ta to New Mexico, 

 Texas, etc., and in the foothills. 



Var. sericea, Gray, is a robust mountain form, canescent with the silky 

 pubescence; the leaflets mo.stly broad (3 or 4 lines), and the cylindmceou.«« 

 pods nearly or (inite an inch long. — 0. sericea, Nutt. in Torr. & Gray. Fl. i. 339. 



Var. Bigelovii, (iray. is a marked form, with pods of the pro<odiug 

 form, but more slender, of thinner texture, and short stipitate; leafl«-l* grecu 



