88 Coitfrib'ffio/i-s to Western Botany. 



Astragalus Nuttallianus var. enneajugus. Leaflets at 

 least in the upper leaves g to io pairs, oblong, emarginate, 6 or 

 less lines long; plants stout, leafy, i to \ l / 2 ft. high; stipules con- 

 spicuous, i lines long, adnate, not connate; peduncles shorter 

 than the leaves in fruit or longer in flower; flowers several, 

 about 3 lines long, in a head both in flower and fruit; pods 

 arched most below, io lines long, ii{ lines wide, ventral suture 

 raised and pod much flattened laterally, smooth, ascending. 

 Characterized chiefly by the unusually wide flat pods and many 

 leaflets. The calyx lobes are nearly double the tube which is % 

 line long, filiform-subulate. Robust plants. Prairies of the 

 Brazos Tex., March 1844 Lindheimer. Mo. Bot. Garden Nos. 

 17072, 17073. 



Astragalus Nuttallianus var. quadrilaTeralis. Plants 

 apparently erect, annual, a foot high; leaflets 6 to 7 pairs, ob- 

 long, emarginate, 5 or less lines long; peduncles longer than the 

 leaves in fruit to twice as long, 2 to 4 inches long; flowers 3 to 6; 

 pods congested at the apex of peduncle, smooth, gently arcuate, 

 a line wide, an inch long, quadrilateral, shallow-sulcate at both 

 sutures, sides rather concave, tip ascending, sharply acute; 

 flowers not seen; plants rather stout and with large leaves. 

 Northwestern Arkansas from Canehill to Ft. Gibson, on damp 

 prairies, June 1835 Engelmann, Mo. Bot. Garden No. 17074; 

 Indian Terr. Butler 1875, No. 17068. 



Astragalus Nuttallianus var. leptocarpoides. Widely 

 spreading to prostrate and slender plants; leaflets about 8 pairs, 

 2 to 4 lines long, emarginate, oblong elliptical; most of the 

 petioles very short; peduncles longer than the leaves, 2 to 3 

 inches long and slender; calyx lobes barely equal the tube; 

 flowers rather large, 3 to 4 lines long, pods few, widely spread- 

 ing, equally arched, not over % line wide, 12 to 14 lines long, 

 somewhat flattened, smooth, ventral suture not depressed, cross 

 section triangular, barely acute, apiculate; seeds 20 to 26. 

 Galveston Is. Texas, on dry prairies, May i, 1843, Lindheimer. 

 Mo. Bot. Garden Nos. 17070, 1707L 



Astragalus Crotalariae (Benth.) Gray P. A. A. vi 216. This 

 species as Gray understood it is what must bear the name A. 



