11G II JilMlNovK. (ITLSE FAMILY.) 



M. rrnicv, L., the common Sensii ivk-Fi.ant, is partially naturalized in 

 localities. 



4G. SCHKANKIA, V.'ill.l. 



Flower- polygamous. Calyx minute. Corolla funnel-shaped, 5-clef; 

 mens 8-10, distinct, exserted. Legume not jointed, prickly, I -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 glolx>S0 axillary peduneled heads. 



1. S. Ulicinata, Willd. Stem, petioles, peduncles, ar.d legumes thickly 

 beset with short and thick recurved prickles ; pinnsB 5 -6 pairs ; leaflets 20-30, 

 elliptical, reticulated with elevated veins beneath; peduncles mostly solitary, 

 usually shorter than the leaves ; legume oblong-linear, with a short acuminate 

 point, about as long as the peduncle ; seeds elliptical. — Dry sandy soil, Florida, 

 and westward. June - August. — Stem 2°-4° long. Legume 2' long. 



2. S. angUStata, Torr. & Gray. Stem, &c. armed with scattered weak 

 recurved prickles; pinna 4-0 pairs; leaflets shout 30, linear-elliptical, reinless, 

 or nearly so, on hotli sides ; peduncles single or by pairs, much shorter than the 

 leaves; legume narrow-linear, 3-4 times as long as the peduncle, ending in a 

 long subulate Bmoothish point. 



Var. ! brachycarpa. Stem, &c as in 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 - August. — Stem 2° - 5° long. 



47. PITHECOLOBIUM, Martins. 



Flowers perfect, rarely polygamous. Calyx tubular-campanulate, 4 -5-toothcd. 

 Corolla tubular-funnel-shaped, 4- 5-cleft. Stamens 10 or more, long exserted, 

 monadelphous near the base. Style liliform. 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 Bhort, ciliate; 

 corolla yellowish, smooth : Btatnena crisped, twice as long *a the corolla; ovary 

 smooth (Iriga Unguis-Cati, WiUd.)— South Florida. — Leaflets l'-l|' long, 

 light green. (Legume spirally twisted, 5-6-seeded, white, and fleshy within. 

 McFad*n a ) 



ft. P. Guadalupense. Unarmed ; leaves bipinnate ; leaflets 4, ooria- 



Obliquelv oblong br obovate, the common and partial petioles nearly 

 equal ; peduncle- solitary, axillary, longer than the leave-, or the upper ones 



racemose ; calyx and corolla pnbesooot ; stamens 30 or more, 3-4 times as long 



