1?7 



cliffs from Charleston Mts. to Keeler. Tropical, 



134. Astraaalut accumbens Sheldon Minn. Bot. Stud. 9 20 (1894). 

 A. prociimhens Watson. Pods 1.2-2 cm. Ion;;, oblong-oval, about 7 mm. 

 high, wrinkled, puberulent, dor.sal suture a little intruded, cross section 

 nei'.rly round even when dry, rounded at both ends. Flowers nearly 

 sessile even in fruit, stubby, wliite or puri)lisli, spreadiiif,', few, rarely 

 more than 3 pods mature, capitate, 0-10, 6-8 mm. long, the blades about 

 as long as calyx. Banner almost round, arched to erect. In broad 

 curve beyond calyx tips, barely longer than keel, with sides reflexed 

 about 1.5 mm. wide in middle. Wings arched almost to a half circle, 

 very obliquely oblanceolate, a little longer than keel. Keel with base 

 arched and tip incurved to more tlian erect and abrui)tly, barely acute. 

 Calyx rather long-campanulate, about 3 mm. long and 2 mm. high, dark- 

 hairy with appressed pubescence, scarcely at all flattened laterally, 

 teeth arched and triangular, about */4-*^ as long as tube. Bracts tri- 

 angular, 2-3 mm. long, much longer than the very short pedicels. Ped- 

 uncles sul)scapif()rni, S-U> cm. long, ascending, niuclii longer than leaves. 

 Leaves 5-7 cm. long, with petioles over half the whole, slender. Leaf- 

 lets 5-7 pairs, about 7 mm. long and 3 mm. wide, sessile, thick, oblong 

 obovate, rounded, somewhat silvery with appressed hairs. Stipules 

 broadly ovate to deltoid, acute, about 5 mm. long, hyaline, adnate, large 

 for the plant, either imbricated or the Internodes very short. Root 

 erect and much branched at tip with, short and woody stems, 2-15 cm. 

 long, then again branched as much and as long and stems rather as- 

 cending, forming a rather open mat, the habit being much that of A. 

 calycosus. This looks like a diminutive A. Missouriensis but is of an- 

 other group. First collected by Dr. Palmer in 1SG9 and referred to A. 

 tephrodes, then by Dr. Havard at Fort WIngate, Marsh, and- later by 

 Lemmon at Laguna, New Mexico. Lower Temperate life zone, on dry 

 benches. 



135. Aetragalus iotiflorus Hook. Fl. Bor. Am. 1 152 (1834). Phacn 

 T. & G.. Pods mostly straight, both sutures convex but the dorsal 

 more so, r!;«i.vwlicn pod is arcuate the ventral suture is concave, 

 laterally compressed and cross section triquetrous or deltoiil-coidale 

 when it is simllow-sulcate dor.sally, flat and triangular-acute at tip. 

 closely ai)pressed and rather long-hairy, ascending to rettexed. Flow- 

 ers mostly reflexed, about 5-7 nun. long, almost sessile, sometimes 

 clelstogamous, about 10. Banner oval to round, abruptly erect at end 

 of calyx teeth or nearly so, notched, about 5 mm. long, nearly a half 

 longer than keel, often purple-veined above, sides reflexed. Vv'ings 

 narrowly-oblong, obtuse, nearly 2 mm. wide, somewhat longer than 

 keel. Keel straight hardly surpassing the calyx tips, arched to erect 

 at the truncate end, 2 mm. high, dull-purple. Bracts subulate; to tri- 

 angular, hairy, about equaling the calyx tube. Calyx tube 2-'\ mm. 

 long, appres.sed-long-h,aIry. Peduncles slender, often very short, sub- 

 8cai);form. Iveaves 5-15 cm. long, the petiole about half the whole. 

 Leaflets about 5 pairs, elliptical to ol)long and acutlsh at both ends. 

 5-15 mm. long, rather distant, nearly smooth above. Stipules ovate, 

 ■ cumlnate rarely overlapjiing. Stems very sliort but slender and 

 branched, diffuse, rarely more than 2-5 cm. long, forming small mats 

 on the ground and very leafy. Whole plants variably silky-pubescent 

 with hairs mostly appressed, sometimes spreading on the pods. Com- 

 mon on the Plains from the Saskatchewan to Texas but only on the 

 Atlantic slope, blooming in spring. Tlie var. brachypus Ciruy. (A. 

 '. l.atiocarpus Sheldon and A. ammolotus (Jreene) has flowers sessile 

 :«t'readlng pubescence. This Is rather common ut thenortli but hardlv 

 : inong the leaves and mostly cleistoganious. and arcuate pods with 

 d(>>jerves varietal rank as it grows with the other forms and often has 

 sessile and long-peduncled flowers on the same plant. The var. Rever- 

 choni ((Jray) .lones wliicli is A. criMaceus Buckley, A. Iotiflorus var. 

 Nebraskensis Bates, and A. Batesil Nelson has long peduncles and nar- 



