162 Reventi-Arrecti. 



over on the Snake river valley where it grows in sagebrush plains. 

 Lower Temperate life zone. The pod is often mottled or reddish. 

 The leaflets are sometimes 3 cm. long but with the ovate or lanceolate 

 base and oblong outline above and mostly notched. Whole plant 

 nearly smooth, it is not likely that it extends south of Osceola Nevada 

 nor is it known at all in Utah. 



Astragalus arrectus var. eremiticus (Sheldon) Jones Cont. 7 665 

 (1S95). A. eremiticus Sheldon Minn. Bot. Stud. 9 161 (1894). This is 

 the form the species assumes in the hot regions adjoining the Tropical 

 Jife zone at the south. Pods about 1.5 cm. long, oval-oblong, to 

 oblong, chartaceous, conspicuously inflated, on a tapering stipe about 

 as long as body and erect or nearly as In the preceding variety, the 

 dorsal suture a little intruded. Calyx cylindrical and as in the last 

 variety. Flowers in long racemes and about 1.5 cm. long, w^hite, ochro- 

 leucous or purple, the banner not fleshy, oval-ovate, with sides much 

 reflexed throughout and seemingly triangular, claws little exserted. 

 Wings truncate to notched and broad as in the type, the tips always 

 white or yellowish when flowers are purple, keel a little longer than 

 high and with rounded tip and purple-tipped. Pedicels longer than 

 the bracts, in fruit 2-4 mm. long as in the var. above. Peduncles 1-3 

 dm. long, mostly longer than the leaves, slender but stout for the 

 plant. Leaves a foot or less long, the upper nearly sessile, with 

 about 10 pairs of elliptical-lanceolate leaflets which are glaucous, con- 

 spicuously petiolulate, distant and 1-2 cm. long and rounded, rarely 

 notched, thin. Stipules large, broad, green-striped. Stems often a foot 

 long, zigzag, slender, from a woody and branched base. Common from 

 the Beaverdam Mountains near St. George Utah to Chloride Arizona in 

 the Lower Temperate life zone on the edge of the Tropical on gravelly 

 mesas and among rocks. A form of this at Chloride has oval pods 

 on a stipe hardly longer than the calyx, rudimentary calyx lobes and 

 purple flowers with conspicuous white or yellowish wings, and nearly 

 oval and half shorter leaflets. 



Astragalus arrectus var. remotus n. var. This is a striking form 

 with the racemose flowers and fruit rather closely ai)pressed. Pods 

 narrowly oblong to linear, about 1.5 cm long and 3-4 mm. wide, abruptly 

 apiculate at tip, purple-nerved, thin, triangular-acute at base, on a stipe 

 barely as long as the calyx, with cross-section reniform-triquetrous. 

 The pods have the dorsal suture produced almost to the ventral as a 

 hyaline partition and are chartaceous, but little inflated and smooth 

 as in the other forms, the ventral suture is a broad and i)urple stripe 

 externally. Calyx oblong-campanulate, laterally flattened. 2 mm. high, 

 1 mm. wide, nigrescent, deeper cleft above with broad sinuses, about 

 3 mm. long and much as in the type species. The calyx teeth are va- 

 riable but about half as long as tube, triangular and green. Pedicels 

 as in the variety eremiticus but 8-9 mm. long, the deltoid-ovate ban- 

 ner about 7-8 mm. long and abruptly arched to 45 degrees just beyond 

 calyx tips, and thin. Groove in banner shallow% less than a half 

 circle, 2 mm. wide and faintly veined, stopping 2 mm. from tip of ban- 

 ner. Wings flat to keel, oblong-ovate, rounded, entire, concave, the 

 right hand one flaring, both arched to 45 degrees, 2 mm. wide at tip, 

 longer than keel, obtuse to erose, often speckled. Keel very obtuse, 

 with straight base, tip erect and puri)le. Bracts conspicuous but 

 small, about as long as flowering pedicels which are short. Peduncles 

 wiry, 1-2 dm. long and strict, a little longer than the rachls. Leaves 

 rarely 1 dm. long, all petioled, ashy, with 6-8 pairs of small leaflets 

 5-15 mm. long, which are mostly folded and seem linear but are 

 narrowly to broadly elliptical, thick and obtuse and distant. Stems in 

 dense tufts, slender, with 2-3 long internodes 5-7 cm. long and zigzag, 

 from woody base. Growing among rocks at Good Springs on the 

 western edge of Nevada on the lower edge of the Lower Temperate 



