158 
M0NADELFH1A DECANDR1A. 
longatis bifloris ; pe- | long, 2 flowered; petals 
tabs obovatis. j obovate. 
Sp. pi. 3. p. 705. Walt. p. 1 75. Mich. 2. p. 38. Pursh 2. p. 448. 
Nutt. 2. p. 80. 
Root tuberous, perennial. Stem 6 — 12 inches high, sparingly divided, 
pubescent with the hairs reflected. Root leaves on long petioles ; stem 
leaves opposite, the upper pair nearly sessile ; all 5 parted, the lobes 
obovate, notched and toothed, pubescent. Peduncles few, terminal, 2 
flowered. Calyx hairy, conspicuously mucronate. Corolla purple. Pe- 
tals twice as long as the calyx, not emarginate. 
The flowers of this species are conspicuous and ornamental. 
Grows in the rich oak lands of the upper country. 
Flowers April— May. 
SCHRANKIA. Wills. 
Calyx tubulosus, 5 
dentatus. Petala 5. 
Stamina 8 — 10 exer- 
ta. Siliqua 4 valvis. 
Calyx tubular, 5 
toothed. Petals 5. 
Stamens 8 — 10 ex- 
serted. Pod 4 val- 
ved. 
1. Uncinata. 
Sp. pi. 4. p. 1043. Pursh 1 . p. 305. Nutt. 2. p. 81. 
Mimosa Intsia. Walt. p. 252. 
Mimosa horridula. Mich. 2. p. 254. 
Root perennial. Stem' herbaceous, prostrate, 2—3 feet long, angled,, 
thickly armed with retrorse uncinate prickles. Leaves alternate, abruptly 
bipinnate. Common petioles about 3 inches long, angled, prickly and gla- 
brous like the stem, pinnate, opposite. Leaflets small, nearly elliptic, gib- 
bous at base, thinly sprinkled with hair, irritable, closing at the touch as 
quickly and as completely as any species of the Mimosa. Flowers nu- 
merous, aggregated in spherical heads. Peduncles in pairs, axillary, from, 
1 — 2 inches long, prickly like the stem. Calyx very minute, 5 toothed. 
Corolla tubular, small, but many times longer than the calyx, 5 cleft, of a 
bright purple. Stamens generally about 10, 2 — 3 times as long as the 
corolla, slightly cohering at base. Anthers incumbent, 2 lobed, some- 
what elliptic, yellow. Germ superior, long, slender. Style as long as 
the stamens. Stigma simple. Legumen oblong, prickly, 4 valvecl 
Seeds several in each valve. 
Grows in dry sandy pine barrens. 
Flowers from May — July, — perhaps through the summer. 
