14 RypbBERG: NoTEs ON FABACEAE—III 
46. HoMALosus CoLLINus (Doug!l.) Rydb. 
Phaca collina Hook., was described from specimens collected 
by Douglas in the Blue Mountains, Oregon. Hooker described 
the corolla as having a purple spot and G. Don gives it as purple. 
As far as I know the corolla in all the species of the group is 
ochroleucous or straw-colored without any purple. In herbarium 
specimens the corolla often shows a darker spot, but this is 
probably due to stain from the pistil. In any case this darker 
spot contains no purple or blue. Otherwise, Hooker’s description 
is full and agrees with our plant so closely that there seems to 
be no doubt about the correctness of our interpretation. The 
range of the species includes Washington and Oregon, southern 
British Columbia, and western Idaho Astragalus cyrtoides A. 
Gray, is evidently a synonym of this. See under A. Gibbsii. 
47. HoMALoBUsS CALIFORNICUS (A. Gray) Heller. This is 
closely related to the preceding and is distinguished mainly by 
its longer and mottled pod*. 
NORTHERN CaLtrorniA: Hornbrook, 7. Howell 1351; between 
Iguna and Weed, Heller 8082; Pit River Ferry, H. E. Brown 
284; Mount Shasta, 464; Weed, L. E. Smith 197; Yreka, Greene, 
in 1876. 
48. Homalobus Tweedyi (Canby) Rydb. comb. nov. 
Astragalus Tweedyi Canby, Bot. Gaz. 15: 150. 1890. 
This is related on the one hand to H. collinus and on the other 
to H. Gibbsii, but it differs from both in the ascending stipe and 
nearly erect body of the fruit. In general habit and in the nar- 
row leaflets it resembles H. collinus, but the pod is curved as in 
H. Gibbsii 
WASHINGTON: Yakima County, Brandegee 731. 
OREGON: “Eastern Oregon,” T. Howell, in 1880; Fifteen 
Mile Creek, Lloyd, in 1894. 
* Jones in his recent ‘“‘Revision’ 
with Astragalus stenophyllus, A. 
it No. 7, while the rest of the 
closest relative being No. 93. 
” placed this species in the Homalobi, together 
Antiselli, A. porrectus and A. inversus, giving 
group he placed in his Collini, A. collinus, its 
