35G LEGUMINOSiE. Hedysarum. 



1. A. hispida ( Willd.) : stem herbaceous, erect, and f with the petioles and 

 legumes) somewhat hispid and roughened with prickly tubercles ; leaflets 

 many (20-i!5) pairs, linear, obtuse; stipules ovate; racemes 3-5-flowered; 

 legume distinctly stipitate, 6-10-jointed, slightly sinuate along the lower mar- 

 gin.— JFt//d syj. 3. p. 1163; Parsh, Ji. 2. p. 4S5 ; Nutt. gen. 2. j). Ill; 

 £11 sk. 2. p. 220; Bart. fl. Am. S&pt. 1. p. 102, t. 29; DC. prodr. 2. p. 

 485. Hedysarum Virginicum, Linn. 



Marshy places, along rivers, Pennsylvania ! to West Florida ! not found 

 west of the Alleghany Mountains. Aug.— (T) Stem 2-3 leet high. Leal- 

 lets 5-10 lines long, glabrous, with extremely minute pellucid punctures. 

 Stipules acuminate. Racemes simple, usually bearing a leaf. Calyx une- 

 qually bilabiate; upper lip longer, bifid; lower 3-cleft. Corolla yellow tmged 

 with red externally : vexillum emarginate : wings denticulate, scarcely tooth- 

 ed at the base: keel falcate. Anthers oblong. Ovary very hispid. Le- 

 gume li-2i inches long and nearly 3 lines wide, often nauch constricted be- 

 tween one or two of the joints. 



2. M.I viscidul a (M'lchyi.) : stem herbaceous, prostrate, viscidly pubescent, 

 slender ; leaflets 3-4 pairs, obovate, somewhat hairy beneath ; stipules 5- 

 nerved, oblique ; peduncles usually 2-flowercd ; bracts resembling the sti- 

 pules ; legume hispid, 2-3-jointed, deeply constricted on the lower suture 

 between the roundish joints.— Mc/i.r..'}?. 2. p. 74; Nutt. gen. 2.p. 141; Ell. 

 sk. 2. p. 220; DC. prodr. 2. p. 323. M. prostrata, Poir. suppl. 4. p. 76. 

 (fide DC.) ^ 



Sandy soils, South Carolina to East Florida!— 'T) Stem 1-2 feet long, 

 branched, diffuse. Leaflets commonly 3 pairs, 4-6 lines long, often retuse, 

 slightly mucronate, glabrous above. Stipules and bracts prominently nerved. 

 Raceme longer than the leaves. Upper lip of the calyx 2-cleft ; the segments 

 obtuse; lower lip almost equally 3-cleft. Flowers scarcely one-third as large 

 as in the preceding species, yellow, on pedicels about 2 lines long : vexillum 

 roundish, emarginate : wings obovate-oblong : keel narrow, falcate. Anthers 

 oblong. Ovary hispid. Legume about | of an inch long, hispid with rigid 

 hairs which are glandular at the base, constricted between the joints almost 

 to the superior suture.— Differs from the genuine species of iEschynomene in 

 the 5-cleft and scarcely bilabiate calyx, the deeply sinuate legume, the lance- 

 olate .stipules, vfcc. It will form, with a few South American species, a sepa- 

 rate section, or perhaps a distinct genus, as suggested by Kunth. 



42. HEDYSARUM. Z/inn. (partly) ; DC. mem.Leg.,<^ prodr.2. p. 340. 



Calyx 5-cleft'; the segments linear-subulate, nearly equal. Vexillum large : 

 keel obliquely truncate : wings much shorter than the keel. Stamens dia- 

 delphous (9 & 1), and with the style abruptly bent inward toward the sum- 

 mit. Legume composed of several compressed 1-seeded orbicular or lenti- 

 cular joints, which are connected with each other by the middle. Herbaceous 

 or suffrutescent plants ; perennial. Leaves unequally pinnate, exstipellate. 

 Racemes spicate, on simple axillary or terminal peduncles. Flowers rather 

 large, purple, white, or ochroleucous. 



The North American species are all more or less alpine, and belong to the section 

 Leiolobium, DC. : the joints of the legume not cchinate or villous. 



1. H. boreale (Nutt.) : stem erect, strict, a little decumbent at the base ; 

 leaves subsessile ; leaflets 8-12 pairs, oblong, minutely hairy beneath ; stipules 

 united, sheathing, with subulate points; racemes elongated, on long peduncles; 

 the flowers very numerous, rather secund, and somewhat imbricately reflexed ; 

 Seeth of the calyx short, unequal ; vexillum and wings shorter than the keel ; 



