284 OJJDER XLIII. LEGUMINOSJE. 



an oblong-cordate limb. Stamens 5, monadelphous. Legume 

 indehiscent, 1-seeded. Herbaceous plants, glandular. Flowers 

 in terminal spikes or heads. 



1. P. car'neum, (Mich.) Stem glabrous, much branched, slender. 

 Leaves fascicled. Leaflets 2 — 3 pairs, linear, lanceolate, entire, glandu- 

 lar. Flowers in oblong spikes. Calyx glabrous, ovate, striate, 5-cleft, 

 slightly pubescent on the margin, deeply cleft on the upper side. Petals 

 oblong, unguiculate. — Rose-color. If. August. Near Macon, on the 

 Houston road. 1 — 2 feet. 



2. P. corymbo'sum, (Mich.) Stem erect, branching, glabrous. Leaves 

 fascicled ; leaflets 3 — 4 pairs, linear, entire, glabrous, dotted underneath. 

 Stipules 2, subulate. Flowers in heads. Peduncles glandular. Calyx 

 deeply cleft, plumose; the upper petal with a long claw. Legume small, 

 1 -seeded, oblong. — White. If. Sept. — Oct. Near Macon, on the road 

 to Brown's Mountain. 1 — 2 feet. 



Tribe IV.— TRIFO'LEBLE. 



Legume continuous, several-seeded, and dehiscent, or few- 

 seeded and indehiscent. Generally herbaceous, erect or procum- 

 bent. Leaves radiated, 3 — 5 — 7-foliate. 



Genus XXVIII.— TRIFO'LIITM. Tourn. 16—10. . 

 (From tris, three, and folium, a leaf; the species having three leaves.) 



Calyx campanulate, 5-cleft, with setaceous segments. Petals 

 more or less united, vexillum longer than the wings. Legume 

 membranaceous, 1 — 6-seeded, generally indehiscent. Leaves 

 palmately divided, or trifoliate ; leaflets 3 — 7. Flowers in 

 dense spikes or heads. Clover. Tree-foil. 



1. T. arven'se, (L.) Stem silky, pubescent, erect, branching. Leaflets 

 spatulate-lanceolate, obtuse, ternate, minutely 3-toothed. Floicers in 

 oblong, villous spikes. Petals nearly separate. Legume 1-seeded. — 

 Whitish, with purple spot on the wings. 0. June — Aug. 8 — 12 inches. 



Stone Clover. Rabbit-foot. 



2. T. i-ratex'se, (L.) Stem glabrous, ascending, sometimes slightly 

 hairy ; leaflets oval, finely serrulate, or nearly entire. Flowers in ovate 

 spikes. Calyx very hairy. Corolla longer than the calyx. Petals 

 unequal — Purple. 2f. April — May. Rich soils. 2 — 3 feet. 



Red Clover. 



3. T. niTi.rx'iM. (L.) Stem pubescent, decumbent, or ascending. 

 J.-nr.s ternate; Leaflets oborate, somewhat rhomboidal, pubescent, up- 

 p. r "ii<-< ftcute, lower ones emarginate. Flowers in somewhat umbellate 

 dense heads. Calyx hirsute, dee ply -parted, with subulate teeth. Vex- 

 illum broad-ovate, twice as long as the calyx Legume '.'> — 5-seeded. — 



lum red, wing- and keel white. £}. April — June. 12 — 18 inches. 



Buffalo Clover. 



4. T. ki.'im tra, (L.) Stem glabrous, creeping, diffuse, sometimes sprin- 

 kled with a few hairs. Leaves ternate, nearly glabrous; leaflets ovate- 

 oblong, emarginate, denticulate. Flowers in umbellate, globose heads, 



