368 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Pods somewhat flattened, pendent, smooth and 
shining.........-.-.---------------+-+--- 15. P. stenophylla. 
Pods not at all flattened. 
Flowers and pods reflexed....-..--.----- 16. P. collina. 
Flowers spreading; pods erect... ..-.----- 17. P. tweedyi. 
One of the sutures of the pod impressed or intruded. 
Pods compressed. 
Pods reflexed, the dorsal suture intruded 
to divide the pod into 2 cells........--- 13. P. misella. 
Pods pendent, the ventral suture intruded. 14, P. alpina. 
Pods obcompressed, the dorsal suture impressed. 
Leaflets glabrous, broadly oval......----- 18. P. beckwithir. 
Leaflets pubescent, lance-oblong... ~~... - 19. P. arrecta. 
Pods sessile or nearly so. 
Pods 2-celled by the intrusion of the sutures. 
° 
Flowers greenish or yellowish; pods oblong... ..--.- 20. P. mortoni. 
Flowers purple or purplish. 
Pods oblong; flowers spicate.....-...-.------- 21. P. adsurgens. 
Pods ovate; flowers capitate. .....-.-.------- 22. P. agrestis. 
Pods 1-celled. 
Flowers subsessile in the leaf axils; leaflets -™ 
prickly-pointed. . wees .. 30. P. viridis. 
Flowers in racemes or or spikes: leaflets not rigid nor 
prickly-pointed. 
Inflorescence racemose; pods not linear. 
Pods subglobose, pubescent, chartaceous.. 26. P. misera. 
Pods oblong or ovate, coriaceous. 
Sutures of the turgid pod both promi- 
nent; flowers greenish...... 2.2. --.- 23. P. reventa. 
Sutures of the pod not both prominent, 
the dorsal impressed. 
Flowers greenish; leaflets 21 to 29. 24. P. hoodiana. 
Flowers purplish; leaflets 11 to 21. 25. 
Inflorescence spicate; pods linear, chartaceous. 
Keel of the corolla with a long inflexed beak. 27. P. convallaria 
Keel of the corolla short-beaked. 
Calyx teeth nearly as long as the tube. 28. P. decumbens. 
Calyx teeth one-third as long as the 
tube... 2.2222 ee eee eee ee eee 29. P. serotina. 
P. conjuncta, 
1. Phaca lentiginosa (Doug].). 
Astragalus lentiginosus Dougl.; Hook. Fl. Bor Am. 1: 151. 1830. 
? Astragalus diaphanus Dougl.; Hook. Fl. Bor. Am, 1: 151, 1880. 
Type vocaxiry: “Subalpine ranges of the Blue Mountains.” Collected by Douglas. 
Rance: Washington to Nevada and California. 
SPECIMENS EXAMINED: Coulee City, Piper 3885; Henderson 2353; between Coulee City 
and Waterville, Spillman, May, 1896; Wilson Creek, Lake & Hull 663; Ellensburg, Piper 
2674; Toppenish, Piper, July 10, 1897; Sprague, Sandberg & Letberg 132; Cow Creck, 
Lyall in 1860; Klickitat County, Howell; Coulee City, Piper 3885; Washtucna, Colton 975. 
ZONAL DISTRIBUTION: Upper Sonoran. 
Astragalus diaphanus Dougl., said to be abundant ‘‘on sandy soil near the Great Falls 
of the Columbia,’ has never been satisfactorily identified. While possibly referable to 
A. lentiginosus, the characters of “ pilose-scabrous’’ herbage and “linear faleate’ pods point 
strongly to some other species. 
