116 ASCLEPIADACEAE. 



Pinelands and waste places, L, keys. Xat. of Trop. Am. — [E. K.] — {Bah., 

 Cuba, Ant.) — Tkumpet-flower. Yellow-oleander. 



3. AMMOCALLIS Small. Erect herbs. Leaves opposite. Corolla-tube 

 with a contracted mouth. Follicles narrow. 



1. A. rosea (L.) Small. Stems 2-7 dm. tall: leaf-blades oblong to oblong- 

 cuneate, 4-8 cm. long: calyx-lobes linear-subulate, 3-4 mm. long: corolla white, 

 pink, or blue, with an eye; tube 27-34 mm. long: lobes abruptly pointed: 

 follicles 2-3 cm. long. — Pinelands, hammocks and waste places, U. keys, L. keys. 

 Nat. of the tropics. — [E. K.] — (JSer., Bah., Cuba, Ant.) — Periwinkle. 



4. URECHITES Muell. Arg. Vines. Leaves opposite. Calyx-lobes rela- 

 tively long and narrow. Corolla-tube abruptly dilated into the campanulate 

 throat. 



1. U. lutea (L.) Britton. Stems 3-30 dm. long, reclining or twining: leaf- 

 blades oval, ovate, or suborbicular, 2.5-5 cm. long: calyx-lobes lanceolate, 8-11 

 mm. long: corolla yellow, the campanulate throat over 2 cm. long: anthers 

 with linear-filiform appendages at the apex: follicles 12-15 cm. long. [U. 

 Andrewsii (Chapm.) Small.] — Pinelands. — F. K. {Bah., Cuba, Ant.) 



5. RHABDADENIA Muell. Arg. Vines, sometimes nearly erect. Leaves 

 opposite. Calyx-lobes relatively broad and short. Corolla-tube gradually 

 dilated into the funnelform throat. 



Corolla yellow ; limb 2.5-3 cm. wide : erect herb, the branches pubescent. 



1. R. coraUicola. 

 Corolla white ; limb 4.5-5 cm. wide : twining vine, the branches 



glabrous. 2. R. biflora. 



1. R. corallicola Small. Stems 3-11 dm. long: leaf-blades oblong or nearly so, 

 1-3 cm. long, more or less revolute: calyx-lobes deltoid-ovate, 2-2.5 mm. long: 

 corolla 2.5-3 cm. long; lobes 1-1.5 em. wide: follicles 8-11 cm. long. — Pine- 

 lands, L. keys. — [E. K.] — Fragmentary specimens apparently of a related 

 species, B. Sagraei, of the Bahamas and Cuba, were collected on ' ' Pine Key ' ' 

 many years ago by Dr. Blodgett. It differs from B. coraUicala in the twining 

 stem, the broader calyx-lobes, the shorter free portions of the filaments, and 

 the stout-beaked seeds. 



2. R. blflora (Jacq.) Muell. Arg. Stems greatly elongate: leaf-blades oblong 

 or oblong-lanceolate, 4-0 cm. long, apiculate : calj-x-lobes oblong or nearly so, 

 4-5 mm. long: corolla 5-6 cm. long; lobes 2.5-3 cm. wide: follicles 12-15 em. 

 long. — Coastal hammocks, L. keys. — [E, K.] — {Bah., Cuba, Ant.) 



6. ECHITES P. Br. Vines. Leaves opposite. Flowers relatively large. 

 Calyx with glands within. Corolla salverform, the throat narrowed to the 

 mouth. 



1. E. Echltes (L.) Britton. Stems widely twining: leaf-blades ovate to oval, 

 4-9 cm. long: calyx-lobes triangular, 2.5-3.5 mm. long: corolla white or green- 

 ish-white; tube, 5-6 cm. long; lobes 1.5-2.5 cm. long: follicles 15-20 em. long. 

 — Pinelands, U. keys, L. keys. — [E. K.] — {Bah., Cuba, Ant.) 



Family 2. ASCLEPIADACEAE. Milkweed Family. 



Perennial herbaceous or woody plants, with usually umbol-like cymes. 

 Androeeium of usually 5 stamens, with the anthers more adlicrent to the 

 stigma than in Apocynaceae, the filament-appendages forming a crown. 

 Gynoecium of 2 carpels with the stigmas united; only one carpel usually 

 maturing. 



