672 



BOTANY 



membranous wing. Ourouparia ( 57 ) is a genus of climbing plants found in the 

 Malayan Archipelago ; the hook-like organs specialised for climbing are the stalks 

 of reduced inflorescences, which are sensitive to contact. The flowers are associated 

 together in spherical inflorescences resembling those of the commonly grown orna- 

 mental shrub Cephalanthus. 



(b) Coffeae. Stipules scaly. Each loculus of the ovary with a single seed. 

 Coffea, the Coffee plant, is a shrub ; C. arabica (Fig. 753) and C. liber ica are 



FIG. 752. CiTichona succirubra. A, Flower. B, Corolla split oi-n. (.', Ovary in longitudinal 

 section. D, Fruit. E, seed. (D, nat. size, the others enlarged.) After A. MEYER and 

 SCHUMANN. OFFICIAL. 



important economic plants, originally derived from Africa, and now cultivated 

 throughout the tropics. The pentamerous, snow-white flowers, which have a 

 similar scent to that of Orange blossom, and the bright red fruits contrast with 

 the shining, dark-green foliage, and make a coffee plantation attractive both in 

 appearance and in scent. The pericarp becomes differentiated into a succulent 

 exocarp and a stony endocarp. The minute embryo is embedded in the horny 

 endosperm with which the seed is filled ; the seed-coat is very thin. The remark- 

 able myrmecophilous plants (cf. Fig. 207, p. 237) of the Malayan Archipelago, 

 Myrmecodia ( 58 ) and Hydnophytum, also belong to this group ; the former has 

 spiny roots. Uragoga Ipecacuanha, a small herbaceous plant or undershrub, is a 

 native of 'Brazil, especially of the province of Matogrosso. The stipules have an 



