- LATHYROS. LEGUMINOS “4. 157 
leaflets 5--6 pairs, obovate-oblong to linear, retuse, long-mucronate; 
flowers 1 or 2, 10--12 lines long, red purple: pods linear, several-seeded, 
black when mature; seeds black, globose, 1--2 lines in diameter. Com- 
mon in fields and waste places. Introduced from Europe. 
16 ‘LATHYRUS L. Sp. 872. (Ppa). 
Herbs with angled stems, more or less climbing by tendrils 
that terminate the pinnate leaves, usually foliaceous stipules 
and flowers in loose axillary racemes. Calyx campanulate, 
5-toothed, the two upper ones more or less shorter than the 
others. Corolla with the lateral petals but slightly if at all co- 
herent to the keel, the upper one free. Stamens diadelphous or 
nearly so, sheath of the filaments scarcely oblique. Style usu- 
ally somewhat flattened and dilated above, bent nearly at a right 
angle with the ovary, pubescent or villous in a line along the 
inside, next the free stamen. Pods oblong, compressed, two- 
valved, one-celled, not jointed, many ovuled. Seeds globular or 
angular. | 
* Rachis of the leaves tendril-bearing: peduncles mostly equalling 
or exceeding the leaves: pods sessile: perennials: racemes several- 
flowered. 
+ Stipules large, ovate or somewhat semihastate with broad lobes: 
calyx-teeth ciliate. Stems not winged. 
L. maritimus Bigel. Fl. Bost. ed. 2, 268. Glabrous throughout: stems 
stout, 1-2 feet high, from long slender rootstocks: stipules broadly ovate, 
hastate, acute, 12-18 lines long; leaflets 3-5 pairs, ovate-oblong, 1-2 inches 
long, obtuse or acutish, nearly sessile: peduncles a little shorter than the 
leaves, 6-10-flowered; flowers purple and white, 9 lines long; calyx-teeth 
sparingiy ciliate, the upper ones triangular, half as long as the narrowly 
subulate lower one: pods linear-oblong, 2 inches long, about 10-ovuled, 
labrous or pubescent, straight. On sandy banks near the sea, northern 
California to Alaska and the Atlantic coast: and Europe. 
L. polyphyllus Nutt. T. & G. Fl. i, 274. Glabrous throughout: stems 
stout, 2-4 feet high, branching: stipules triangular, as broad or broader 
than long, acuminate, often more or less dentate; leaflets 6-10 pairs, thin, 
oblong, obtuse or acutish, distinctly petiolulate, 1-2 inches long: pedun- 
cles slender, shorter than the leaves, 6-10-flowered; flowers purple, 6-8 
lines long; calyx teeth ciliate, the upper pair short, triangular, the other 
three nearly equal, subulate, 3-4 lines longer: pods linear-oblong, 2 inches 
long, 2-10-seeded. In forests, Puget Sound to California, near the coast. 
L. ochroleucus Hook. FI. i, 159. Glabrous and a little glaucous: stems 
slender 1-3 feet high: leaflets 3-4 pairs, ovate or ovate-lanceolate, dis- 
‘tinctly petiolulate; stipules semicordate, entire or obtusely toothed below: 
peduncles 7-10-flowered; flowers ochroleucous, 5-6 lines long; calyx some- 
what truncate above, the upper teeth broadly triangular, scarcely half the 
length of the oblong or lanceolate lateral ones, the lower one lanceolate 
and a little the longest: pods glabrous, linear-oblong. In forests, Puget 
Sound to the Arctic Circle and across the continent. 
L. sulphureus Brewer in Gray Proc. Am. Acad. vii, 399. Rather 
stout, 1-4 feet high, glabrous: stipules semisagittate, acuminate, 6-10 lines 
long, the lower half sometimes toothed; leaflets 3-5 pairs, oblong to 
elliptical, obtuse to acute, 9-18 lines long, very shortly petiolulate: pedun- 
cles longer than the leaves, few-many-flowered; flowers sulphur-yellow, 6 
lines long; calyx teeth ciliate or glabrous, the upper pair very short, tri- 
angular, the other three subulate, nearly as long as the corolla: pods 
