LEGUMINOS^. 79 



13. PHACA. I.z7m.— Bastard Vetch. 



(From the Greek ((laKos, lentils.) ♦ 



Calyx 5 -toothed or 5 -cleft ; the two upper teeth a little dis- 

 tant from each other. Keel obtuse. Legume usually turgid 

 or inflated, 1 -celled, the upper suture somewhat tumid. 



P. negleda Tmr. tf* Gr. : nearly smooth ; leafets 6 — 10 pairs, elliptic, 

 smooth above, pubescent with appressed hairs beneath ; stipules triangular 

 ovate ; peduncles about as long as the leaves ; spikes oblong, many-flow- 

 ered ; calyx campanulate ; legume sessile, globose, ovate, pointed. 



Gravelly banks and sandy woods. Western N. Y. to Wisconsin. June, 

 July. %. — Stem 1 — 2 feet high, rather slender, sparingly branched. Flowers 

 15 — 25 in a spike, white. Resembles Astragalus Canadensis, but has shorter 

 and looser spikes, w^hite flowers, and a campanulate calyx. Bastard Vetch. 



14. STYLOSANTHES. Swartz.—Vencil Flower. 



(From the Greek jruAo?, a column, and avOog, a, flower ; the flowers appearing 

 slipitate.) 



Tube of the calyx very long, slender ; limb 5 -parted, lobes 

 unequal. Corolla inserted in the throat of the calyx. Keel 

 minute, bifid at the apex. Stamens monadelphous. Style fili- 

 form, very long, straight. Stigma capitate, hispid. Legume 

 with 1 — 2 joints; joints 1-seeded; the apex subuncinate, acu- 

 minated into the base of the style. 



S. elatior Swartz : stem erect, herbaceous, pubescent on one side ; leaves 

 ternate ; leafets lanceolate, smooth, acute ; bracts lanceolate, hispid-ciliate ; 

 spikes few-flowered ; legume 2-jointed, the lower joint sterile and stipitate. 

 S. hispida Mich. Arachis aprica Walt. 



Sandy woods. N. Y. to Flor. W. to Ala. and Ark. July, Aug. %.—Stem 

 a foot high, branched at the top. Floioers yellow, in terminal compact heads. 

 Legume 1-seeded, hooked at the summit. Pencil Flovjer. 



15. ^SCHYlvrOMENE. Linn.— JEschynomene. 

 (From the Greek aiix'^'^ofxai, to he bashful; in allusion to its sensibility.) 



Calyx 5 -cleft, bilabiate ; upper lip 2 -cleft or 2 -toothed ; lower 

 one 3-cleft, or 3-toothed. Corolla papilionaceous. Stamens 

 10, in two equal sets. Legume compressed, transversely jointed, 

 erect, exsert ; joints 1-seeded. 



JS. hispida Willd.: stem herbaceous, erect, and with the petioles and 

 peduncles hispid ; leaves in many pairs ; leafets linear, obtuse ; racemes 

 simple, 3 — 5-flowered ; legume distinctly stipitate, with G— 9 hispid joints. 

 Hedijsai'um Virginicum Linn. 



Marshes. Penn. to Flor. July, Aug. (T). — Stem 2 — 3 feet high. Leafets 

 10—25 pairs. Flowers yellow and red. Hispid JEschynomene. 



