116 LEGUMINOS&. (PULSE FAMILY.) 
M. pupica, L., the common SENSITIVE-PLANT, is partially naturalized in 
some localities. 
46. SCHRANKIA, Willd. 
Flowers polygamous. Calyx minute. Corolla funnel-shaped, 5-cleft. Sta- 
mens 8-10, distinct, exserted. Legume not jointed, prickly, 1-celled, many- 
seeded ; the narrow valves separating at maturity from the broad margins. — 
Perennial prostrate prickly herbs, with bipinnate sensitive leaves, and purple 
flowers in globose axillary peduncled heads. 
1. S. uncinata, Willd. Stem, petioles, peduncles, and legumes thickly 
beset with short and thick recurved prickles ; pinnz 5 — 6 pairs ; leaflets 26 — 30, 
elliptical, reticulated with elevated veins beneath; peduncles mostly solitary, 
usually shorter than the leaves; legume oblóng-Mnbaf, with a short acuminate 
point, about as long as the peditelé ; seeds elliptical. — Dry sandy soil, Florida, 
and westward. June- August.— Stem 2°-4° long. Legume 2! long. 
2. S. angustata, Torr. & Gray. Stem, &c. aymed with scattered weak 
recurved prickles ; pinnæ 4 — 6 pairs ; leaflets about 30, linear-elliptical, veinless, 
or nearly so, on both sides ; peduncles single or by pairs, much shorter than the 
leaves ; legume narrow-linear, 3-4 times as long as the peduncle, ending i ink 
long subulate smoothish point. 
Var.? brachycarpa. Stem, &c. asin No. 1; leaflets oblong-linear ; pedun- 
cles single or 2-4 in a cluster, the upper ones longer than the leaves; legumes 
(2! - 3! long) broadly linear, abruptly slender-pointed, densely armed with strong 
often branching prickles, about as long as the peduncle.— Dry pine barrens, 
Florida to North Carolina, and westward. June- Angnik — Stem 2? - 5? long. 
Legumes 4' - 5! long. 
oe 47. PITHECOLOBIUM, Martius. 
Flowers perfect, rarely polygamous. Calyx tubular-campanulate, 4—5-toothed. 
Corolla tubular-funnel-shaped, 4 —5-cleft. Stamens 10 or more, long exserted, 
monadelphous near the base. Style filiform. Legume broadly linear, com- 
pressed, contorted or falcate, transversely partitioned, mealy or pulpy within. 
Seeds lenticular. — Trees or shrubs, often armed with stipular spines. Leaves 
pinnate or bipinnate. Flowers chiefly capitate, axillary and terminal. 
1. P. Unguis-Cati, Benth. Unarmed or spiny ; leaves bipinnate ; leaf- 
. lets 4, thin, broadly and obliquely obovate, the partial petioles much shorter than 
the common one ; heads globose, in a loose raceme ; calyx-teeth short, ciliate ; 
corolla yellowish, smooth ; stamens crisped, twice as long as the corolla; ovary 
smooth. (Inga Unguis-Cati, Willd.) — South Florida. — Leaflets 1' - 1! long, 
light green. — spirally twisted, 5 — 6-seeded, white, and ndi within. 
McFadyen.) TR 
2. P. Guadalu 
. eeous, obliquely 
equal ; peduncles $ 
racemose ; calyx and 
*. 
i Unus om Pee rog leaflets 4, coria- 
or obovate, the common and partial petioles nearly - 
» longer than, the leaves, or the upper ones - 
escent ; tis code a6 fimen sa Jong i 
