Lavaynvs. XLVI. LEGUMINOS 2. 219 
** Corolla not papilionaceous. 
he andglabrous. . . . . . «. + -  . Darlingtonia. 40 
Pe regular. ? Armed with uncinate spines. “ole a erartemae 
Herbs. ? Corolla irregular. . 3 , 3 i i ~ : P FE 3 3 
Shrubs. Corolle regular. . 3 é : d B gale : : 3 ‘ . Mimosa. 
unarmed. Fae a. ty rae eS eee ee Rea ara 
Trees ¢armed with triple spines. . 3 - Gleditschia. 3% 
: SuporDeErR 1. PAPIELIONACE &. 
Petals papilionaceous, imbricate in xstivation, the upper one exter- 
nal. - Stamens mostly 10 and diadelphous. 
1 LATHYRUS. 
Calyx campanulate, the 2 upper sepals shortest; stamens 10, dia- 
delphous (9 and 1); style flat, dilated above, ascending, bent at a 
right angle with the ovary, pubescent or villous along the inside next 
the free stamen; legume oblong, several-seeded— Herbaceous, mostly 
climbing. Lws abruptly pinnate, of \—several pairs of leaflets. Petioles 
produced into tendrils. Peds. axillary. 
1. L. venosus. Muhl. 
St. 4-cornered, naked ; stips. semi-sagittate, lanceolate, very small; ped. 
8—16-flowered, shorter than the leaves; /fts. 5—7 pairs, somewhat alternate, 
obtusish, mucronate.—72| In shady grounds, Can. and U.S. Stem erect, 2—3f 
high, mostly smooth. Leaflets 13—2’ long. Peduncles axillary, many-flow- 
ered, about the length of the leaves. Corolla purple. Legumes flat and nar- 
row. Jn. Jl. 
2. L. ocnroxteucus. Hook. (L. glaucifolius. Beck.) 
St. slender; ped. 7—10-flowered, shorter than the leaves; wpper segments 
o the calyx truncate, angular; //is. about 3 pairs, broadly ovate; stip. semi-cor- 
ate-——2| A small, delicate species, very rare, in shady places and on river banks, 
N. J. to Wise.! N. to the Arctic circle. Stem 2—3f long, leaning or climbing 
on other plants. Leaflets 1—1}’ long, ? as wide, larger than the stipules. Pe- 
duncles axillary, shorter than the leaves. Corolla yellowish-white (ochroleu- 
cous.) Jn. Jl. 
3. L. patustris. Marsh Lathyrus. 
St. winged; stip. semi-sagittate, large, ovate, mucronate ; /fts. in 2 pairs, 
oblong-ovate, mucronate ; ped. 3—5-flowered, larger than the leaves.—2, A slen- 
der climber, found in wet meadows and thickets, N. Eng. to Or. Stem slender, 
square, broadly winged at the angles, supported by the tendrils. Leaves pin- 
nate-cirrhose, leaflets broad or narrow-ovate. Flowers drooping, rather large, 
variegated with blue and purple. Jn. Jl. 
4, L. maritimus. Bw. (Pisum maritimum. Ph.) Beach Pea. 
St. quadrangular, compressed; petioles flat above; stip. sagittate; Jfts. 
numerous, subalternate, ovate; ped. many-flowered—A pale green, creeping 
plant, resembling the common pea, found on sandy shores, N. Y. to Lab., W. 
to Or. Stem rigid, 1—2f in length. Stipules connate. Leaves ending in a 
branching tendril, the lower pairs of leaflets largest. Flowers large, blue. Pod 
hairy. May—July. 
5. L. myrtirouius. Muhl. 
St. quadrangular, winged, weak and fiexuous; stip. semi-sagittate, ovate- 
lanceolate, acuminate; /fts. 2 pairs, oblong-lanceolate, acute, mucronate, vein- 
less ; ped. longer than the leaves, 4—5-flowered—? A little climber, on river 
banks, Can. to Md. Robbins. Stem about 3f long. Leaflets 1—2’ long, } as 
wide. Flowers pale purple. Jl. Aug. 
6. L. tatiroiius. Everlasting Pea— Ped. many-flowered ; fe 2, lanceolate; 
joints membranous, winged.—?2| A very showy plant for gardens and arbors, 
native of England. Stem 6f long, climbing, winged between the joints. Flow- 
ers large, pink, clustered on a peduncle 6—10’ in length. Jl. Aug. 
7. L. oporatus. Sweet Pea.— Ped. 2-flowered; ifts. 2, ovate-oblong; lg. 
* 
