14G APOCYNACEAE. 



2 caipels, sometimes uuited only at the apex. Stigma terminal. Fmit a 



pair of follicles, or drupaceous. 



styles united: stamens distinct: pollen loosely granular. Pam. 1. Apocynaceae. 

 Styles distinct : stamens usually monadelphous : pollen 



united into waxy masses or the grains in groups of 4. Fam. 2. Asclepiadacbae. 



Family 1. APOCYNACEAE. Dogbane Family. 



Perennial herbaceous or woody plants, with mostly diehotomous, 

 cjTuose inflorescence. Androecium of mostly 5 stamens, with the anthers 

 converging around the stigina or slightly adhering to it, not accompanied 

 by a crown. Gynoecium of 2 carpels, the styles and stigmas at least 

 united; two carpels usually maturing. 



Anthers unappendaged at the base, not connected with the stigma : corolla-lobes 

 sinistrorsely convolute. 

 Fruit drupaceous: shrubs or trees. 1. Cerbera. 



Fruit a pair of follicles : herbs sometimes partially shrubby. 2. Ammocallis. 

 Anthers appendaged at the base, converging around the stigma 

 and partially adherent to it : corolla mostly dextrorsely 

 convolute. 

 Shrub or trees. 3. Nerium. 



Herbs or vines. 



Corolla funnelform, the throat widened upward. 



Calyx-lobes relatively long and narrow : scale-like glands 



borne at the base of the calyx within. 4. Urechites. 



Calyx-lobes relatively broad and short : scale-like glands 



wanting. .'. Rhabdadenia. 



Corolla salverform, the throat narrowed upward. 0. Echites. 



1. CERBERA L. Shrubs or trees. Leaves alternate: blades relatively 

 narrow. Caly.x-lobes long. Corolla funnelform, the throat not constricted at 

 the mouth. Drupe broad. Seeds angular. 



1. C. Thevetia L. Shrub: leaves approximate; blades narrowly linear, 8-16 cm. 

 long: calyx-lobes lanceolate, 5-7 mm. long: corolla saffron-colored: tube 2-2.5 

 cm. long; lobes very broad, 3-4 em. long: drupe depressed, 3-4 cm. broad. — 

 Pinelands and vraste places. Nat. of Trop. Am., and cultivated. — F. K. (Bah., 

 Cuba, Ant.) — Trumpet-flower. 



2. 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 and hammocks. Nat. of the tropics, and 

 cultivated. — F. K. (Ber., Bah., Cuba, Ant.) — Periwinkle. 



3. NERIUM [Tourn.] L. Shrubs or trees. Leaves opposite: blades rela- 

 tively narrow. Corolla salverform, the throat campanulate, with toothed scales 

 at the mouth, the lobes spreading, broad. 



1. N. Oleander L. Shrub, or tree becoming 10 m. tall: leaf-blades narrowly 

 elliptic to linear-elliptic, 6-15 cm. long, many-veined: calyx-lobes lanceolate, 

 4.5-6 mm. long: corolla white to rose-purple; limb 3-4.5 cm. wide, the lobes 

 obliquely apiculate: follicles 1-2 dm. long. — Hammocks and low pinelands. 

 Nat. of the Levant, and cultivated. — (Ber., Cuba, Ant.) — Ole.\ndek. 



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

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

 throat. 



