112 Inflati 



the leaves; cross section, renlform. Flowers many, closely racemose, 

 horizontal. Calyx campanulate-cyliudric, 3-4 mm. long, a little oblique 

 at the rounded base, not oblique above, with teeth n-.inute and deltoid 

 shortly pubescent. Pedicels rather slender, in fruit 2-3 mm. long and 

 rather longer than the triangular bracts. Banner oval, about 8 mm. 

 long, abruptly erect remote from calyx, with sides reflexed most below. 

 Wings obliquely oblong-oblanceolate and very obtuse, about 3-4 mm. 

 shorter than the banner and a trifle longer than the keel. Keel 

 with straight base, then abruptly arched to erect at the end and tip 

 triangular and acute. Leaves 1-1.5 dm. long, narrow, nearly sessile 

 with 12-15 pairs of elliptical and obtuse and rather distant leaflets 

 about 1 cm. long, thick and green, smooth. Stems 4-6 ft. high, branched 

 above and flexuous and rather slender. Growing in the alkaline val- 

 leys east of San Diego California, seldom seen. Tropical. 



61. Astragalus macrodon (H. & A.) Gray Proc. Am. Acad. 6 216 

 (1864). Phaca macrodon H. & A. Bot. Beech, 333 (1841). A. holo- 

 sericeus Jones. Pods oval-ovate to half-oval, 2-3 cm. long and about 

 2 cm. wide, the oblique tip deltoid and short, a little sulcate at both 

 sutures, chartaceous, spreading to reflexed, the cross section about 

 round. Flowers ascending, nearly white, about 7 mm. long, 10-20 in a 

 short and close raceme. Banner round, gently arched to erect from 

 the calyx tube, with sides reflexed above, about 4 mm. long, barely 

 longer than wings. Wings half-oval, a trifle longer than keel. Keel 

 arched to a half circle from base, the triangular and produced tip as 

 long as base and erect, about 4 mm. high. Calyx tube campanulate, 

 about 3 mm. long, with subulate and curved teeth nearly as long. 

 Bracts ovate, minute, shorter than the pedicels which are 2-3 mm. long. 

 Peduncles slender, about half as long as leaves, the fruiting rachis 

 at least as long. Lower leaves much reduced, the upper 1-1.5 dm. long, 

 with petioles mostly 2-3 cm. long. Lower leaflets 5-7 pairs, linear-el- 

 liptical, acute, 7 mm. long, and petiole as long as leaf rachis; upper 

 leaflets about 10 pairs, linear lanceolate, very acute, 1-2 cm. long. Stip- 

 ules subulate-filiform, 7 mm. Ion?, reflexed, thick, not connate. Inter- 

 nodes 2-5 cm. long. Stems rather flexuous and slender. Pubescence 

 very soft and short-shaggy throughout with very fine wavy hairs and 

 seeming woolly but hardly so. Stems and pods less pubescent. Mon- 

 tery Co.. San Luis Obispo and the coast region, also at Fresno and 

 around the San Joaquin valley. 



62. Astragalus Douglasii (T. & G.) Gray Proc. Am. Acad. 6 215 

 (1864). Phaca T. & G. Fl. 1 346 (1838). A very variable species. 

 Pods papery, 2-4 cm. long and about 3 cm. wide, in the type, gibbous- 

 ovate to half oval, apiculate. Flowers cream-colored, rather reddish 

 in bud. Banner oval-ovate, about 7 mm. high, abruptly arched at 

 end of calyx to erect, with sides reflexed near the base and 1 mm. 

 wide; groove sharply widened at end of keel till it fills the whole 

 banner, the banner tips not reflexed. Wings sharply arched to 

 nearly erect and exposing keel, very obliquely cuneate obovate, about 3 

 mm. wide near tip. very blunt, the right hand one flaring below, the 

 other close pressed to keel, about 1 mm. longer than keel and 3 mm. 

 shorter than banner. Keel as high as long and abruptly rounded to 

 a little more than erect and sharp, about 3 mm. high, not dark-tipped. 

 Calyx nearly hemispherical, oblique at both ends ,inserted near the 

 lower corner and fleshy at corner, at mouth obcompressed and deeper 

 and broader cleft. Upper teeth the longer, subulate, rather dell old. 

 hardly one-third as long as tube. Flowering pedicels about equaled 

 by the ovate bracts, 1-2 mm. long. Peduncles slender, rarely 1 dm. 

 long. I^eaves narrow, 1-1.5 dm. long, all somewhat petioled. Leaflets 

 10-13 pairs, 7-20 mm. long, narrowly elliptical to linear-oblong, obtuse, 

 rather thick, about 4 mm. wide, shortly petiolulate, inclined to be sil- 

 very below with very fine straight and closely appressed hairs, but 



