LEGUMINOS-E. (PULSE FAMILY.) 133 



the (lipcovcrcr, the late ]Vm. Coopn-, tlierc hciiif; alrcaily an A. ne;;lcrtus.) — 

 Gravelly shores, &.C., \V. New York to Wiseousiii. June, July. 



G. A. distortUS, Ton-. & Gray. Low and spreadin;,^ branehed from the 

 base, suiootliish; leaflets 11-23, oblongs or obovate ; y/oi/rrs piirjilish or violet, 

 10 - 20 in a short spike ; the standard deeply notehed at the summit ; pods oblong, 

 tun/icl, iuciirved (§' long), eoriaccous, incompleleli/ '2-celled. — Mason Co., Illinois, 

 Dr. Mead. May. (Also in Arkansas and Texas.) 



§ 3. Pod dry and dehiscent, thin-wallfd, small, stalked in llirrali/.r {slipilate), and irilh 

 it more or less pubescent with jine blackish hairs, Itamjimj on short pedicels : ra- 

 ceme short, rather many-flowered, lonej-jmlnncled: leajlets oral or dilong. 



7. A. alpinus, L. Smooth or slightly hairy; stemdiffn.<e, 6' to 12'high; 

 leaflets 13-2;'); corolla violet-purjtle, or at least the keel tipped with violet or 

 blue (;■)"- 6" long) ; pods black-hairy, oblong, deeply grooved on the baek and 

 partly 2-celled by the intrusion of the dorsal suture, its stipe usually rather 

 exceeding the calyx. — Kocks and banks, Northern Vermont (Wilionghhy 

 Mountain, ./. Blake) and Maine (Dr. Scammon, G. L. Goodale), and north- 

 ward. June, July. (Eu.) 



8. A. Robbinsii, Gray. Nearly smooth and erect (1° high), slender; 

 leaflets 7 - 11 ; corolla white (4" long) ; calyx-teeth short; pods oblong, flaltish (^' 

 long), membranaceous, almost glabrous, the base suddenly contracted into a stipe 

 about equalling the calyx, one-celled, a thin membrane slightly projecting from 

 the dorsal suture. (Phaca Robbinsii, Oakes.) — Rocky ledges of Onion River, 

 at Colchester, Vermont, Dr. Robbins (1829) : the station now obliterated. May. 



15. OXYTROPIS, DC. Oxttropis. 



Keel of the corolla tipped with a sluirp projecting point or appendage : othcr- 

 ■wise as in Astragalus. Pod often partly 2-eelled by the intrusion of the ventral 

 suture. — Our species, and most others, arc low, nearly aeaulescent perennials, 

 •with tufts of numerous very short stems from a hard and thick root or rootstock, 

 covered with scaly adnatc stipules; pinnate leaves of many leaflets; and naked 

 scapes bearing a head or short spike of flowers. (Name indicates the peculiarity 

 of the flower, from o^xis, sharp, an<l rponis, keel.) 



1. O. canip6stris, DC. Pubescent or smoothish; leaflets lanceolate or 

 oblong : flowers yellowish or white, often tinged or tipped with ])urj)le or violet- 

 blue ; jiods ovate or oblong-lanceolate, of a thin or ]>apery texture. — Northern 

 bonier of Maine, on tlie St. John's, near Seven Isles, G. L. Goodale, and north- 

 ward. July. (Ku.) 



2. O. Lamb6rti, Pursh. Silky with fine appressed hairs ; leaflets mostly 

 linear ; flowers larger, purple, violet, or sometimes white ; jxxis cartilaginous or 

 Jinn coriaceous in texture, strictly erect, cyliadraccous-laueeolatc and long-pointed, 

 almost 2-eclled by intrusion of the ventral suture. — Dry plains, Minnesota and 

 westward. .June. 



16. GLYCYRRHIZA, Toiun. LiQioiucii. 



Calyx with the two ujjper lobes shorter or partly united. Anther-cells con- 

 fluent at the apex, the alternate ones smaller. Pod ovate or oblong-lincai-, com- 



