Astragalus. 



LEGEMESTOS-E. 



145 



Stipe half shorter : pod acute at base. 

 Stipe a quarter of an inch long, half the length of the pod. 

 Sessile in the calyx, bladdery, an inch or two long, mauy-seeded. 

 i torolla pale yellow, short and broad : stipules herbaceous. 

 Corolla white or whitish, narrow, an inch long: stipules searious. 

 Stipules distinct : pod rather lirm-walled. 

 Stipules united opposite the petiole : pod thin-bladdery, 

 i i ilia yellowish-white or cream-color, 4 lines long, hardly twice 

 the length of the calyx. 

 Herbage villous when young : calyx-teeth as long as the tube. 

 Herbage puberulent when young : calyx-teeth shorter than tube. 

 Sessile in the calyx, half an inch long : flower a quarter-inch long. 

 Nearly glabrous : pods capitate, ovate, acuminate, 10-15-seeded. 

 Villous : pods few, ovate-incurved, 3-8-seeded. 



16. 



A. i.ErcorsH. 



17. 



A. TEICHOPHYLLCS. 



18. 



A. OOCARPUS. 



19. 



A. CROTALARI.fi. 



20. 



A. Menziesii. 



21. 



A. UACRODON. 



22. 



A. DOUGLASII. 



23. 



A. HORN1I. 



24. 



A. PfLSIFEU-E. 



++ ++ Pod coriaceous or cartilaginous, or chartaeeous, not bladdery-inflated, 

 = Long-woolly or long-hairy, sessile in the calyx, many-seeded. 



25. A. PtTRSHII. 



26. A. HALACUS. 



27. A. Andersonil 



riant white with soft wool, very low : pod densely woolly. 



PI ml and pods long-hairy, taller. 



Plant and pods downy with short hairs, slender. 



= = Pod glabrous or pubescent with short hairs. 



Pod conspicuously stipitate, the stipe equalling or surpassing the calyx, 

 One-celled, both sutures prominent externally. 

 Calyx very obliquely attached to the pedicel and recurved on it : 

 pod curved or coiled, rigid. 

 Herbage soft-downy: pod pubescent. 2S. 



Herbage minutely pubescent: pod glabrous. 29. 



Calyx not oblique : pod straight, thinner-walled, linear-oblong. 



Almost glabrous : pod obtuse at base ; stipe half an inch long. 30. 

 Hoary-pubescent : pod tapering into a stipe a quarter-inch long. 81. 

 Glabrous: stipe 2 lines long. 32. 



Two-celled by intrusion of the dorsal suture, turgid, 



Narrowly oblong, straight, erect. 33. 



Ovate, incurved, reflexed on the stipe. 34. 



Pod very short-stipitate in the calyx, pendulous, oblong-linear, straight. 40. 

 Po 1 sessile in the calyx or nearly so, and exceeding it. 

 - ins a span to a foot or more high. 

 Flowers an inch long, few : pod oval. 1 -celled. 35. 



Flowers one third to two thirds of an inch long, 

 Few or scattered in the spike. 

 Pod Battened fore and aft, wing-margined. 36. 



Pod more or less Battened or narrower fore and aft, marginless, 

 curved ai maturity, 

 [ieaflets 5 to 15, linear, scattered, hoary-pubescent. 37. A. Casi i. 



Leaflets 1 1 to 21, crowded, 

 Obovate or roundish, loosely pubescent or glabrous: 



Sowers purple. ps. 



Obion i nutely silvery- silky : flowers whil 



Pod terete with i the back, narrow, sb 



Short-stipitate in the calyx, not • i 40. 



Not at all stipil |1. 



\l mi- Bowers and pods crowded in a dense spike. 



Pods oblong, obtuse, 2-celled, many-s led. 42. 



. lenticular, 1 -celled, -J 5-s led. 13. 



Flowers and few-s led 2-cclled p ids only 2 or :-, lines long. 

 Herbage and turgid pods minutely pubescent : the lattei grooved 



on the back, 1 1. 



Herbage and laterally flatfish p.*ls very pubescent 45. 



Stems or t.tneks not rising from tie ground : leaflets few: scape 



few-flowered : pod* small. 16. 



Pod sessile in and shorter than the calj led, -17. 



A. CTRTOIDES. 

 A. SPEIROCARPDS. 



A. FILI1TS. 



A. Antiselli. 



A. PORRECTUS. 



A. ARE! 



A. BOLANDERI. 



A. >. ; r ITUS. 



A. NtTDDS. 



A. PTEROCARPUS. 



A. [ODANTHUS. 



A. Webberi. 



A. ATI! \ ITS. 

 A. OBSODBUS. 



A. MORTONI. 



Nosi icnvus. 



A. Lemmoni. 



STIFORMIS. 

 A. 0AIY1 osns. 



• • Leaflets prickly pointed and rigid, persistent 

 !'■ luncles very short, 1 8-flowered : pod very small, 1 - l-seodod. 18. A. K.M iiorilYTA. 



