238 LEGUMINOS^. Hosackia. 



1 7. H. cytisoides, Benth. EesemlDling the last : calyx-teeth attenuate, mostly 

 recurved : peduncles equalling or exceeding the leaves, or sometimes very short, 

 usually with a 1 - 3-foliolate bract at the top. — Trans. Linn. tSoc. xvii. 366. 



From near San Francisco to Monterey and southward ; Salinas Valley, Antiscll. 



18. H. juncea, Benth. 1. c. Very nearly glabrous, somewhat shrubby, erect: 

 leaflets obovate to oblong, 2 to 4 lines long : umbels on very short peduncles or 

 sessile : flowers about 3 lines long : calyx 2 lines long or less ; teeth short and blunt. 



Monterey to San Diego {Douglcis, Nattall, Brewer, Goodalc) ; Colorado Desert (Schott) ; and 

 reported also from near San Francisco. 



+- -i- Herbaceous and s2Mri7iffli/ pubescent : stems terete : leaflets usually 5 to 1, and 

 less approximate. 



19. H. prostrata, Nutt. Slightly appressed-silky : stems very slender, diffuse, 

 2 or 3 feet long : leaflets cuneate-oblong to obovate, 2 or 3 lines long, acutish : um- 

 bels on slender peduncles, often a half to an inch long, naked or with a 1-3-foIiolate 

 bract : flowers two or three lines long : style glabrous : calyx a line long ; its teeth 

 short, triangular, acute. — Torr. & Gray, Fl. i. 325. //. decumbens, var. glabriuscula, 

 Hook. & Arn. Bot. Beechey, 137. 



Santa Barljara and San Diego, near the sea, Nuttall, Palmer, &c. 



20. H. micrantha, Nutt. " Diffusely procumbent from an apparently annual 

 root," very slender: leaflets obovate-oblong, 1| to 3 lines long: umbels on very 

 short naked peduncles : flowers very small (not two lines long) : style covered with 

 short straight ascending hairs : calyx-teeth short, acute. — Torr. & Gray, Fl. i. 324. 



Monterey {NioUall) ; Catalina Island, Gambcl probably. No good specimens of this apparently 

 good species have been collected. 



* * Very silky-pubescent or tomentose, herbaceous : stems terete : body of the pod less 

 elongated, often scarcely longer than the calyx, pubescent, tisually much ciirved : seed 

 often solitary, somewhat curved : leaflets 3 to 7, not approximate. 



-i- Pubescence oppressed. 



21. H. sericea, Benth. 1. c. Densely Avhite-silky, much branched, ascending, a 

 foot or two high : leaflets usually 3, cuneate-oblong to linear, 3 to 6 lines long : 

 umbels loosely few-flowered, sessile or often on short peduncles : flowers three lines 

 long : calyx half as long, with short slender teeth. 



Rare : collected by Douglas, probably at Monterey, and in Salinas Valley by Brewer. 



22. H. argophylla, Gray. More or less densely silky, often silvery : stems 

 decumbent or ascending : leaflets usually 5 or 7, from obovate and rounded to 

 oblong and acute at both ends, 2 to 7 lines long : umbels mostly dense and capitate, 

 on short simply bracted peduncles, sometimes nearly equalling the leaves : flowers 4 

 or 5 lines long : calyx half as long ; its teeth conspicuous, filiform and silky, usually 

 nearly equalling the tube. — PI. Thurb. 316. //. argentea, Kellogg, Proc. Calif. 

 Acad. iii. 38, fig. 8. 



In the foot-hills of the Sierra Nevada from the Merced River (^Gray) southward, and through 

 the southern part of the State ; Guadalupe Island, Palmer. Variable in pubescence, length of 

 calyx-teeth, &c. 



23. H. decumbens, Benth. 1. c. Villous-pubescent and somewhat tomentose, 

 l)erennial : stems ascending or diftusely procumbent, a foot long or more : leaflets 5 

 to 7, cuneate-obovate to -oblong, mostly acute, 3 to 6 lines long : umbels less dense, 

 on short peduncles, with a 1 - 3-foliolate bract : floAvers 4 or 5 lines long : calyx less 

 silky; its teeth slender, often as long as the campanulate tube. 



Var. (V) Nevadensis, Watson. Low and apparently annual : flowers somewhat 

 smaller : calyx-tooth half as long as the tube. — H. Heermanni, Anderson, Cat. PI. 

 Nevada, 119 ; Watson, Bot. King Exp. 63, in part. 



