294 



APOCYNACEAE. 



broad lobes somewhat twisted. Stamens borne at tlie top of the corolla- 

 tube; anthers lanceolate, unappendaged. Ovary 2-lobed, 2-celled; ovules 2 in 

 each cavitj; style filiform; stigma disk-like. Drupe flattened, broader than 

 long, the bony endocarp 2-celled. [Named for Cerberus, the fabled watch 

 dog of the infernal regions.] Seven species or more, natives of tropical 

 regions, the following typical. 



1. Cerbera Thevetia L., Frexch Trumpet- 

 flower. Lucky-nut. (Fig. 313.) A small 

 tree, or shrub, up to 20° in height, its branches 

 densely leafy. Leaves linear, dark green and 

 shining above, pale green beneath, 3'-6' long, 

 3"-5" wide, attenuate at both ends, the mid- 

 vein prominent beneath, the lateral venation 

 very obscure; cymes several-flowered; pedicels 

 slender; caJyx-segments lanceolate, acuminate, 

 spreading, about 3" long; corolla 2V-3' long, 

 the cylindric part 6"-8" long; drupe com- 

 pressed-triangular, I'-li' broad, about f high 

 and J' thick, the flesh thin. [Thevetia nerei- 

 folia Juss.] 



Frequently escaped from gardens and planta- 

 tions where it is common. Native of the West 

 Indies. Flowers during most of the year. 



Plumiera alba L., White Trumpet- 

 FX,ow^ER, West Indian, was represented in 1913 

 by a very old tree about 30° high, at Pem- 

 broke Hall. It has linear to linear-oblong 

 leaves 4-10' long, densely white-tomentulose 

 and reticulate-veined beneath, and terminal 

 cymes of white flowers 1' broad or more, the 

 corolla with a yellow eye. 



Plumiera rubra L., Frangipanxi, Eed Jasmine, frequently planted for 

 ornament, is a tree up to 15° high, abounding in milky sap, wuth very stout 

 twigs; the large oblong leaves are 3'-8' long and clustered at the ends of the 

 twigs; the pink to red flowers are in terminal cymes, the corolla about '2' 

 broad with oval lobes longer than the tube, the follicles about 6' long. 



Allamanda Hendersoni Bull, Henderson's Allamanda, South American, 

 a high-climbing woody vine, occasionally planted for ornament, is glabrous, 

 the leaves whorled in 4's, elliptic to oblong, 3-5' long, short-petioled, nar- 

 rowed at the base and acuminate at the apex; the showy bright orange-yellow 

 flowers are about 4' broad, the corolla with a slender tube, its throat spotted. 



Allamanda Schottii Pohl, Schott's Allamanda, also South American, 

 mentioned by Lefroy as grown under glass at Mt. Langton, is similar, but 

 slightly pubescent with lanceolate leaves, the corolla-throat striped. 



Tabemaemontana coronaria (Jacq.) Willd., Crape Jasmine, origin un- 

 known, a glabrous shrub, with thin bright green opposite short-petioled 

 elliptic to oblong-lanceolate, acuminate leaves 3'-6' long, and cymose white, 

 usually double flowers about IV broad, is frequently planted for ornament. 

 [Nerium coronarium Jacq.] 



Tabemaemontana citrifolia Jacq., Small-flowered Tabernaemontana, 

 West Indian, a shrub up to 6° high, with oblong or oblong-obovate leaves 3'-5' 



