APOCYNACBAE 371 



Species more than 100 in all tropical regions, about 10 in the Philippines. 



1. Quite glabrous. 



2. Flowers double; cultivated only. 1. T. divaricata 



2. Flowers single. 



3. Follicles oblong, prominently longitudinally ridged or keeled. 



2. T. pandacaqui 

 3. Follicles, subglobose, not or obscurely ridged 3. T. aubgloboea 



1. Leaves uniformly puberulent 4. T. puberula 



* 1. T. DIVARICATA (L.) E. Br. (T. coronaria R. Br.). 



An erect, glabrous, much-branched shrub 2 to 3 m high, with abundant 

 milky sap. Leaves opposite, those of each pair unequal, glossy, elliptic- 

 ovate to elliptic-oblong, acuminate, 6 to 15 cm long. Peduncles axillary, 

 solitary or in pairs, short, few-flowered. Flowers usually double, white, 

 fragrant, the corolla-tube about 2 cm long, the limb spreading, about 5 

 cm in diameter, the center yellow. 



Occasional in cultivation, fl. more or less all the year. Original home 

 unknown, but now cultivated in most tropical , countries ; of recent introduc- 

 tion in the Philippines. 



2. T. pandacaqui Poir. Pandacaqui (Tag.). 



An erect, branched, glabrous shrub 1 to 4 m high. Leaves elliptic-lan- 

 ceolate to oblong-elliptic, narrowed at both ends-, acuminate, 5 to 12 cm 

 long, green, shining, short-petioled. Cymes axillary and terminal, pedun- 

 cled,. rather few-flowered. Calyx green, -ovoid, short. Corolla white, the 

 tube slender, about 1.7 cm long, tinged with gr?en, slightly enlarged up- 

 ward, the limb 2 to 2.5 cm in diameter, of 5, spreading, falcate, lanceolate 

 lobes. Follicles oblong, usually acuminate, longitudinally ridged or keeled, 

 2 to 4 cm long, red or yellowish-red. (Fl. Filip. p. 4-1.) 



In thickets etc., common, fl. all the year; widely distributed in the Phil- 

 lippines. Endemic. 



8. T. subglobosa Merr. Pandacaqui (Tag.). 



A glabrous shrub 2 to 5 m high. Leaves oblong, 9 to 18 cm long, shortly 

 blunt-acuminate. Cymes in the upper axils, 5 cm long or less, few-flowered. 

 Flowers white, the tube about 1.4 cm. long, the lobes shorter. Follicles in 

 pairs, ovoid to subglobose, red, fleshy, 4 cm long or less, not or but ob- 

 scurely keeled. (Fl. Filip. pi. 283, T. globosa.) 



In thickets, Malate, rare, fl. in June and probably in other months; 

 widely distributed in the Philippines. Endemic. 



4. T. puberula Merr. Pandacaqui (Tag.). 



A shrub ahout 2 m high. Leaves oblong to elliptic-ovate, acuminate, 

 puberulent, 4 to 10 cm long. Cymes axillary, few-flowered. Flowers slen- 

 der, white, about 1 cm long. Follicles red, ovoid to oblong, somewhat curved, 

 ridged, acuminate, 1 to 2 cm long. 



In dry thickets near Fort McKlnley, fl. May-June; known only from 

 Rizal Province, Luzon. 



6. ALSTON I A R. Brown 



Trees with opposite or whorled leaves. Inflorescence of terminal or 

 subterminal corymbose cymes. Calyx short, 5-lobed. Corolla salver-shaped, 

 tube cylindric, the throat naked, annulate, or w.ith reflexed hairs, the lobes 

 short. Stamens inserted near the top of the tube, included, the anthers 



