MACLOSKIE: GERANIACE^. 531 



Calyx-segments narrow, acute, subequal, as long as the tube. Flowers 

 purple, not large. 



(Montevideo ; Argent.) ; Patagon. 



13. LATHYRUS TOMENTOSUS Lam. 



Rufous-tomentose perennial, with tetragonal, striate stem. Leaves with 

 petioles exceeding the 2 leaflets, and semisagittate stipules shorter. Calyx- 

 teeth subequal, lanceolate. Legtim.es linear, silky. 



Styles long, contorted at base, linear-spatulate. 



(Argentina) ; Patagon., near Rawson (Dusen) ; in N. Patagon., near 

 Rio Colorado. Appressed-pubescent, silvery when living ; larger plant, 

 subscandent, with larger flowers than L. sericeus Lam. 



23. RHYNCHOSIA Lour. 



Mostly trailing or climbing perennials, with i-3-foliolate leaves, having 

 no stipels, and with yellow, axillary, racemed flowers. Leaflets usually 

 resinous-dotted. Calyx 4 5-lobed, slightly 2-lipped. Keel incurved at 

 the apex, or falcate. Stamens diadelphous, i and 9. Legume short, 1-2- 

 seeded. 



Species 100, in warm and temperate regions. 



R. SENNA Gill. 



Puberulous ; stem scarcely twining, terete. Stipules subulate, rigid. 

 Leaflets 3, broad-ovate, mucronate, subcordate, 3-nerved, pinnately veined, 

 the lateral ones smaller, as long as the petiole. Peduncles solitary in the 

 axils, rarely 2, each i -flowered, exceeding the petioles. Calyx- segments 

 subulate, as long as the petals. Legume oblong, attenuate downwards, 

 velvety. 



(Argentina) ; N. Patagon., by Rio Negro. A variety with broad ovate 

 leaflets extends from Texas to the borders of Patagonia. 



Family 53. GERANIACE.E. Crane's-bill Family. 



Herbs, with alternate or opposite, usually stipulate, leaves; and axillary, 

 hermaphrodite flowers, having hypogynous, 5-merous calyx and corolla, 

 the petals not united. Stamens as many, or 2-3 times as many, as the 



