358 PAPILIONACEAE 
leaf-axils. Pod linear, terminated by a recurved beak, somewhat hairy. 
Mostly near the coast. April-July. 
21. LATHYRUS, L. 
Vines, mostly trailing, some species partly or wholly erect. Leaves 
of an even number of leaflets, the leaf-stalk terminating by a tendril. 
The nervules are usually nearly parallel with the central nerve. Flowers 
in clusters or single, nearly like those of Vicia, often large. Stamens, 9 
united, 1 free, or 10 united. 
Leaflets broadly oval or elliptic. 
Flowers purple. 
Stipules broad hafberd-shaped, not divided at apex . L. maritimus 
Stipules deeply divided from apex . . . «. - « «© JL. venosus 
Leaflets narrow lance-shaped or somewhat egg-shaped. 
Stems with wings at the angles . . 3 ee 
Stems angled, but not winged. 
Stipules broad, arrow-head-formed and divided . . L. myrtifolius 
Flowers yellowish. 
Stipules narrow, leai-like, lance-sshaped . . . . . « UL. pratensis 
Stipulesmiproad atcamemae 1a eck qo OMe m nem a ke eu S. ochroleucus 
cages ls tte te. des, pS EES 
1. L. maritimus, (L.) Bigel. (Fig. 3, pl. 82.) Brac Pra. Nearly 
erect, or decumbent, stout, stems about 1 ft. high, angled. Stipules very 
conspicuous, halberd-shaped and nearly as large as the leaflets. Leatlets 
elliptic or oval, 1 to 2 in. long, 1/3 to 1/2 as wide. Flowers showy, 
purple, in thick clusters on flower-stalks rather shorter than the com- 
pound leaves. Pod linear with a beak turned at a sharp angle. Sand 
at seashores. May-August. 
2. L. venosus, Muhl. (Fig. 7, pl. 81.) Verny Pra. Stem climbing, 
nearly smooth or covered with soft hairs, 2 to 3 ft. high, strongly 4- 
angled. Stipules very small and slender. Leaflets 4 to 6 pairs, broadly 
elliptic or oval. Flowers purple about as large as those of No. 1, and 
on a stem about as long as the compound leaf. Pod linear with a beak 
not much bent. Southern part of our region. May-July. 
3. L. palustris, L. (Fig. 4, pl. 82.) Marsn Vercuiine. Stems 
slender, usually with wings at the angles, smooth or nearly so. Stipules 
broad, split down the center. Leaflets 2 to 4 pairs, narrow lance-shaped, 
about 1 to 2 in. long and 1/5 as wide. Flowers in loose clusters (2 to 
6 in cluster), purple, each about 4 in. long. Pod narrow 13 to 24 in, 
long. Moist places, northern part of our area. May-August. 
4. L,. myrtifolius, Muhl. (Fig. 2, pl. 82.) MyrrLe-Leavep Marsiu 
Pea. Stems slender, angled but not winged. ‘Stipules broad and _ long, 
resembling leaflets. Leaflets 2 to 4 pairs, oval or oblong, 2/3 to 2 in. 
long. Flowers purple, 2 to 9 in cluster. Pods long, the beak recurved. 
Moist places, our area. May-July. 
5. L. pratensis, L. (Fig. 5, pl. 81.) Meapow Pra. Climbing or 
straggling, 1 to 3 ft. long. Leaves of a single pair of leatlets which are 
linear or broad-linear, 4 to 1 in. long. Stipules of similar form and size 
so that apparently there are 4 leaflets, the lower pair attached to the 
stem. Flowers in a long slender cluster on a long flower stalk, yellow. 
Maine to New York. June-Aug. 
6. L. ochroleucus, Hook. (Fig. 6, pl. 81.) CREAM-coLoRED VETCH- 
LING. Stem somewhat angled, climbing, 1 to 24 ft. high. Stipules broad, 
