NORTH AMERICAN FLORA 



[Volume 24 



32. A. reptans. 



33. A. Harshbergeri. 



Pod more or less pubescent. 

 Corolla 9-15 mm. long. 

 Corolla white. 



Stems creeping; stipe shorter than the calyx-tube. 



Leaflets 25-31, 1-2 cm. long; peduncles 1-4 cm. long; pod 1.5 



cm. long or more, rather gradually acute. 

 Leaflets 15-21, less than 1 cm. lpng; body of the fruit 12 mm. 

 long, abruptly contracted at each end. 

 Stems merely decumbent to erect. 



Stipe of the pod barely equaling the calyx-tube; body 5-6 mm. 



wide. 

 Stipe much exceeding the calyx-tube; body 3-4 mm. wide. 

 Calyx-teeth subulate, 1.5 mm. long. 

 Calyx-teeth deltoid less than 1 mm. long. 

 Corolla purple. 



Bracts longer than the calyx-tube; leaflets minutely strigulose 



beneath. 

 Bracts shorter than the calyx-tube; leaflets sparingly long-pilose 

 beneath. 

 Corolla 7-8 mm. long. 

 Corolla purplish. 



Stems low, decumbent; leaflets obovate, often retuse. 

 Stems tall, erect; leaflets linear to oblong. 

 Corolla white or straw-colored. 



Stipe equaling or exceeding the calyx-tube. 



Pod white-hairy, the stipe much exceeding the calyx-teeth. 

 Pod black -hairy, the stipe slightly exceeding the caiyx-tube. 

 Leaves and calyx sparingly short-hairy. 

 Leaves and calyx copiously long-hairy. 

 Stipe shorter than the calyx-tube. 



7. Seatoniana 



Stems elongate, 3-4 dm. long; leaflets linear; raceme subcapitate, pods 



subsessile. 45. 



Stems shorter, 1-3 dm. long, leaflets oblong to obovate; raceme oblong at 

 least in fruit. 

 Pod subsessile, often black-hairy. 46. A. Seaioni. 



Pod short -stipitate, white-hairy, the stipe nearly as long as the calyx-tube. 47. A. Purpusi 



35. A. polosinum. 



36. A. altttm. 



37. A. bracteatui, 



38. A. Lozani. 



39. A. cobrense. 



40. A. stralurense. 



41. A. longissimum. 



42. A. Rusbyi. 



43. A. Townsendii. 



44. A. Rosei. 



Pueblae. 



1. Glabriuscula. Pod distinctly flat, grayish-strigulose, stipitate, the stipe longer than the 

 calyx; both sutures prominent, the upper more curved than the lower. Corolla middle sized, 

 ochroleucous or greenish white, only purple-tinged in one species, the keel tipped with purple. 



1. 



Atelophragma aboriginum (Richards.) Rydb. Bull. Torrey Club 



it. t^e.i\ i onA 



32: 660. 1906. 



Astragalus aboriginorum Richards, in Frankl. Journey 756. 1823. 



Astragalus vaginatus (Richards, in Frankl. Journey 756, hyponvm. 1823) Hook. Fl. Bor. Am. 1: 



149. 1831. Not A. vaginatus Pall. 1800. 

 Astragalus aboriginum Spreng. Syst. 4: Post. Cur. 288. 1827. 

 Phaca aboriginorum Hook. Fl. Bor. Am. 1: 143. 1831. 

 Tragacantha aboriginum Kuntze, Rev. Gen. 942. 1891. 

 Astragalus Richardsonii Sheldon, Minn. Bot. Stud. 1: 126. 1894. 

 Homalobus aboriginorum Rydb. Mem. N. Y. Bot. Gard. 1: 246. 1900. 

 Homalobus aboriginum Rydb.; Britton, Man. 554. 1901. 



A perennial, with a cespitose rootstock; stems erect, or decumbent at the base, 1-3 dm. 

 high, villous-eanescent, angled; leaves ascending, 3-7 cm. long, the rachis sulcate, villous; 

 stipules ovate, 4-5 mm. long; leaflets 9-13, oblong or lance-oblong, or rarely linear, mostly 

 acute at each end, S-20 mm. long, 2-7 mm. wide, grayish-villous on both sides; peduncles erect, 

 4-8 cm. long; racemes 2-5 cm. long, at first dense, in age lax; bracts subulate, 2-4 mm. long; 

 pedicels about 1 mm. long; calyx villous, the tube 3.5-4 mm. long, 2.5-3 mm. broad, the teeth 

 3 mm. long, subulate; corolla ochroleucous, with a purple-tipped keel; banner 8-10 mm. long, 

 obovate, strongly arched at the middle, retuse; wings shorter, the blade oblong, rather strongly 

 falcate, with a long reflexed basal auricle; keel-petals still shorter, the blade broadly lunate, 

 acutish and purple- tipped; pod distinctly stipitate, glabrous, or strigose when young, the stipe 

 7-8 mm. long, the body lunate, 1.5-3 cm. long, about 5 mm. wide and 2.5 mm. thick, the lower 

 suture acutish, straight or slightly concave, the cross-section oval, the septum less than 0.5 

 mm. wide; seed obliquely reniform, 2.5 mm. long, 2 mm. wide, grayish-brown. 



