ROSACES. (ROSE FAMILY.) 117 



as the corolla; ovary pubescent; legume smooth, falcate or hooked. (Inga 

 Guadalupensis, Dest;. ) South Florida. Leaflets 1 ' long, deep green. Legume 

 2' -4' long. Flowers yellowish. 



48. DESMANTHUS, Willd. 



Flowers polygamous. Calyx 5-toothed. Corolla of 5 oblong-spatulate pet- 

 als, or tubular and 5-cleft. Stamens 5-10. Filaments of the lower flowers 

 filiform, sterile. Legume linear, continuous, 2-valved. Herbs or shrubs, with 

 abruptly bipinnate leaves, and heads or spikes of white flowers borne on axillary 

 peduncles. Leaves sensitive. 



1. D. depressus, Humb. & Bonpl. Stems slender, prostrate, sprinkled 

 with hairs, shrubby at the base ; pinnae 2 pairs ; leaflets oblong-linear, very ob- 

 tuse, oblique and almost truncate at the base, hairy on the margins ; peduncles 

 2-4-flowered, the two upper flowers (sometimes all) perfect; stamens 10; leg- 

 ume linear, many-seeded ; seeds angular, compressed. South Florida. Stems 

 l-2long. Legume !'-!' long. 



2. D. diflfusus, Willd. Stem somewhat shrubby, prostrate ; pinnae 4-5 

 pairs ; spikes few-flowered, capitate ; flowers pentandrous ; legume narrowly 

 linear. Key West. Legume 2' long. 



3. D. virgatus, Willd. Stem erect, rather rigid, smoothish, angled ; 

 pinna? 1 - 7-pairs ; leaflets numerous, oblong-linear ; a rather large ovate gland 

 below the lowest pinnaj ; heads few-flowered; stamens 10 ; legume straight, lin- 

 ear,' 10 - 30-seeded. (D. strictus, Bertol.) South Florida. Stem 1 - 2 high. 



49. NEPTUNLA, Lour. 



Sterile filaments flat, membranaceous or petal-like. Legume oblong, few- 

 seeded ; otherwise like Desmanthus. 



1. N. lutea, Benth. Stems ascending, rough with short rigid hairs; pinna? 

 4-5 pairs ; leaflets numerous, linear-oblong, mucronate, fringed on the margins, 

 veiny beneath ; stipules ovate, acuminate ; peduncles longer than the leaves, 

 rough, minutely bracted ; heads oval or oblong, many-flowered, nodding ; petals 

 distinct; sterile filaments 8-10, yellow, spatulate-linear ; fertile ones 10, white ; 

 legume 5 - 8-seeded. Damp soil near the coast, Key W'est to Alabama, and 

 westward. June. 1J. Stems 2' -3' long. 



ORDER 48. ROSACE^E. (ROSE FAMILY.) 



Herbs, shrubs, or trees, with alternate stipulate leaves, and regular 

 flowers. Calyx of 3-8 (mostly 5) more or less united sepals, and often 

 with as many bracts. Petals as many (rarely none), inserted with the 

 few or numerous distinct stamens on the edge of the disk which lines the 

 tube of the calyx, mostly imbricated in the bud. Ovaries 1 - several, 

 free, or more or less united with the calyx and with each other, 1 - few- 



