75 



along the overland trail by Nuttall. Middle Temperate life zone in brush 

 In dry paces. What Gray mistook for this species and Intended 

 to be called A. campestris is quite different and is what I had in view 

 as A. decumbens var. camptstris. A. decumbens (Nutt.) Gray la a 

 lower form with longer peduncles, and with terminal leaflet not elon- 

 gated and connects with the next. This form blooms from July to 

 September. 



Astragalus campestris var. hylophilus (Rydberg). Homalobus 

 hylophilus Rydberg Fl. Mont. 247 (1900). H. decurrens Rydberg. A. 

 divergens Blankenship. This is what Gray intended as A. campestris 

 and what has been so considered by all botanists since. Plants grow- 

 ing in the shade in moist places mostly at the north. Stems erect 

 normally, with short internodes and long leaves and peduncles with 

 inflorescence rarely surpassing the leaves much. Leaflets thin, most- 

 ly green, barely acute, oval to linear, flat. Stems almost filiform from 

 Eimilar and much branched underground branches of the tap root. 

 Lommon in the mountains at the south from the subalpine down to 

 the edge of the Middle Temperate and throughout the woods of the 

 Middle Temperate at the north. New Mexico to southern Utah, north- 

 ward and northwestwaid to the Cascades and the far north. A. strl- 

 gosus C. & F., A., griseopubens Sheldon, Homalobus camporum Ryd- 

 berg is an intermediate form with narrower leaves almost silvery- 

 pubescent approaching the type of A. campestris var. decumbens: 



Astragalus campestris var. crispatus. Stems densoly tufted 

 from woody root, with general habit of A. campestris, but inflorescence 

 little longer than leaves. Pods ashy and leaves silvery with loose 

 crisped hairs attached near 'the middle. Alta Montana in pine woods, 

 Middle Temperate life zone. 



.Astragalus campestris var. serotinus (Gray Pac. R. R. 12 18, 51 

 t. 5 (1860) as species), A. decumbens var. serotinus (Gray) Jones. A. 

 strigosus C. & F., griseopubens Sheldon, A. Palliseri Gray. This 

 is a straggling elongated form much tufted and with slender root 

 branches, elongated racemes and peduncles, the whole often 2 

 ft long, with leaflets from broadly linear to almost filiform, spar- 

 ingly pubescent, calyx teeth very short and almost deltoid, and keel 

 tip about deltoid and not long triangular as in most forms of the 

 species. This is the common form throughout the Columbia drainage 

 from near the Continental divide to the Cascades in open woods 

 and on prairies. When the calyx teeth are subulate (which is com 

 mon) and the pod slightly stipitate it corresponds well with A. 

 Palliseri Gray. 



10. Astragalus junceus (Nutt.) bray Proc. Am. Acad. 6 230 (1864) 

 Homalobus junceus Nutt. in T. & G. Fl. 1 351 (1838). A. diversifollus 

 var. roborum Jones. Pods narrowly linear, acuminate at tip, 3-4 mm. 

 wide, when mature cross section almost round from base to tip, gen- 

 erally straight, but sometimes falcate a little either dorsally or ven- 

 trally, 3-4.5 cm. long. Inverted on a slender and twisted pedicel. 

 Leaflets all filiform or only rarely some lower ones flat, the upper 

 ones mostly absent and rachis not larger toward tip. Seeds as wide 

 as cavity. Stems mostly few together often solitary. Flowers broad 

 and stubby not 1 cm. long, arched into a half circle. Banner broadly 

 rblong-obovate or wider, arched at calyx tips to 110-125 degrees In 

 sharp arc, the whole upper part is the groove which is a half circle 

 and 5 mm. wide and 1.5 mm. deep and with an accessory groove down 

 the middle, at a point about 2 mm. below tip of banner the groove 

 narrows abruptly to about 1.5 mm. wide. At the base of the groove 

 there is a narrowly triangular white spot with narrow end up and 

 from the sides of this radiate out deep-purple veins darkest below. The 

 erect part of banner is about 5 mm. high, with sides reflexed a trifle 

 only at a point about 2 mm. below keel tip. Wings very obliquely el- 



