Hamosi. 258 



keel, 1 mm. shorter than banner. Keel claw enlarjred just above 

 the calyx so as to make a hollow in the banner, with decided hump 

 at base, purple-tipped, the base a little arched, then sharply rounded 

 to erect, the blade forming- about a half circle, acutish to very obtuse, 

 4 mm. long, 3 mm. high. Calyx tube campanulate, 3-4 mm. long, cleft 

 deeper above, with rounded sinuses, oblique at base and inserted on 

 the lower corner, silvery to nigrescent and densely pubescent, teeth tri- 

 angular, i-ather lax, about half as long as tube. Bracts ovate, about 1 

 mm. long. Pedicels 1-3 mm. long in fruit. Peduncles filiform, erect 

 in flower, mostly flat on the ground in fruit, from 1-15 cm. long, 

 in the diminutive forms concealed in the leaves, in more robust 

 ones 4 times as long as leaves, 2-6 flowered, scapose. Leaves 2-10 

 cm. long, with filiform petiole twice as long as rachis, fascicled on 

 the very short crowns. Leaflets 1-3 pairs, oblong to obovate, 2-10 

 mm. long, silvery on both sides, usually acute, thick, flat, on the 

 lowest leaves often there is but one obovate leaflet. Stipules large, 

 deltoid, imbricated mostly, 3-.5 mm. long. Stems reduced to many 

 short crowns in dense but small mats crowning a long, slender, 

 erect root. Growing on gravelly mesas but well drained and on 

 rocky ridges from the foothills to 10,500 ft. alt. on Mt. Ibapah, 

 Utah. Common from the bad lands of western Wyoming to Poca- 

 tello, Idaho, and Glenwood Springs, Colorado, to the Mogollons and 

 the Sierras. Lower and Middle Temperate life zones. Blooming in 

 spring. A very variable plant. Ihe starved plants are as dense 

 and short as a crespitose phlox. Those growing in the shade are 

 long-petioled and long poduncled. The pods vary from about as 

 long as calyx and teeth to an inch long. 



Astragalus calvcosus var. scaposus (Gray) Jones Cont. 4 26 

 (1893). A. scaposus Cray Proc. Am. Acad. 13 366 (1878). A. 

 candicans Greene. Pods about 1 cm. long, densely pubescent, only 

 slightly flattened, about half included in the long calyx, straight. 

 Flowers reddish-purple, rarely white. Petals barely twice the calyx, 

 rather stubby. Banner obcordate, a little longer than keel and 

 equaled by the wings. Lobing of wings very variable. Calyx ob- 

 long-campar.ulate, teeth deltoid and about 1 mm. long, not lax. 

 Peduncles often 2 dm. long. Heads oblong, 6-12 flowered. Leaflets 

 3-5 pairs. Along the Colorado river from McElmo Cr. Colorado to 

 Hackberry, Arizona, and Owen's Valley, California. Lower Tem- 

 perate lite zone. 



220. Astragalus Bernardinus Jones Cont. 7 661 (1895). 

 Pods apiculate, 2.5 cm. long, about 3 mm. high at tip and 1 mm. 

 high at base, shallow-sulcate dorsally, completely 2-celled, very finely 

 reticulated, ventral suture acute, dorsal angles rounded, l-'lowers 

 6-10, reflexed, 6-8 mm. long. Banner about 2 mm. longer than 

 wings. Wings arched to erect, about 1 mm. longer than keel. 

 Keel arched to a half circle from base, 3-4 mm. high and long, 

 rather obtuse. Calyx tube 2-3 mm. long, rounded at base and 

 about equally inserted, the subulate teeth about as long. Pedicels 

 very short. Peduncles not over 2.5-3 cm. long, rachis about as long 

 or twice as long. Leaves 5-7 cm. long, the rachis like the stems 

 green and tapering, cui-ved. Leaflets about" 4 pairs, narrowly- 

 oblong, about 1.2 cm. long and 3 mm. wide, obtuse but not notched, 

 equally rounded at both ends, ashy on both sides, the upper pairs 

 reduced, on very weak petiolules. Stipules triangular, green, evi- 

 dent. Stems about 2 dm. long, ascending, slender, with internodes 

 not over 3 cm. long. Eastern base of the San Bernardino Mts., Cali- 

 fornia, Lower Temperate life zone, at Cushenberry Canon, Parish; 

 Barnwell Mrs. Brandegee, Charleston Mt. Purpus. Blooming in May. 



221. Astragalus tricarinatus Gray Proc. Am. Acad. 12 56 

 (1876). Pods broadly linear, arcuate a little at maturity, appar- 

 ently 3-keeled by the concave sides making 3-angles, broadly sul- 

 cate dorsally, about 3.5 cm. long and 5 mm. high, smooth, the ven- 

 tral suture very acutely keeled. Flowers spreading, white, about 

 1-2 cm. long. Banner about 5 mm. long, with sides much reflexed 



