178 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Arabia. 



This is a roost interesting country, and, as it is not well known, plants 

 sent home by travellers must always be acceptable. 



Kalancho'c Bcntii (" Bot. Mag.," t. 7765) is unlike all others in its 

 leaves, which are compressed but nearly round in section ; the flowers 

 are white with pink unexpanded corolla lobes ; the tube about 1J inch 

 long. The plant is not very free-growing, but the inflorescence is 

 distinctly beautiful, and of all others this species is most noteworthy as 

 being a parent of the wonderful K. kctvcnsis. It is native of Southern 

 Arabia. 



Adcnium. — A genus of the order Apocynaccac and rarely met with 

 except in Botanic Gardens. It is represented by A. obesum (" Bot. 

 Mag.," t. 5418), a plant with a thick stem and flowers with resemblance 

 to those of Oleander, pink in colour, and darker towards the margin. 

 This species, with several others not in cultivation, is native of Tropical 

 Africa. 



Euphorbia Schimperi, which mimics Ceropegia dichotoma, is from 

 South Arabia. 



Echidnopsis. — This genus has been referred to under Abyssinia and 

 Somaliland. There are two species native of Arabia, one being E. Bcntii 

 ("Bot. Mag.," t. 7760) with brown flowers, and E. Dammanniana, which 

 is nearly allied. 



Caralluma. — A genus of the tribe Stapcliae, with small flowers. 

 It has a membranous corona, by which it is distinguished from 

 Boucerosia. C. fimbriate, sometimes found in cultivation, is native of 

 the East Indies as well as of Arabia. 



Aloc*~-A. pendens may here be referred to. It is figured in the 

 " Bot. Mag.," t. 7837, and appears to be distinctly ornamental. It was 

 collected by Schweinfurth and was introduced by the Berlin Botanic 

 Garden. A. iucrmis is also Arabian. 



East Indies. 



Succulent plants are proportionately uncommon and unimportant in 

 this part of the world, and, with the exception of Frerca, w r e meet only 

 with genera to which we have given attention already. Frerca is allied 

 to Boucerosia ; it has stems scarcely angled, which are provided with 

 thick leaves, and it has a rotate, not campanulate, corolla of a purple 

 colour. It has never been introduced. Other Asclepiads are Boucerosia 

 umbcllata, Ceropegia elegpns ("Bot. Mag.," 3015), a slender species with 

 spotted purple flowers, and C. Dccaisneana. 



Kalancho'c grandiflora, an old Botanic Garden plant, is well worth 

 growing for its bright yellow, sweetly scented flowers. There are several 

 Euphorbias, and the most important, perhaps, are E. Antiquorum and 

 E. lactea, both trigonous species. 



Ceylon. 



CaralLma campanulata ("Bot. Mag.," t. 7274), with bright red- 

 brown flowers, is distinctly a good plant of its kind from this country. 



