470 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



delicately fringed. C. stapcliacformis (" Bot. Mag.," t. 3567) is a 

 thick- stemmed rambler with dark mottled stems, the flowers thickly 

 claret-spotted and with spreading segments. C. Wooclii (" Bot. Mag.," 

 7704) is a freely growing and free-flowering plant with pendulous stems 

 bearing mottled leaves and brown-red flowers. It bears tubers on the 

 stems like a Dioscorea. 



Any selection must include the above. Other South African species 

 in cultivation are G. africana ("Bot. Reg.," t. 626); C. Barklyi ("Bot. 

 Mag.," t. 6315) ; C. Bowkeri (" Bot. Mag.," t. 5407) ; C. Monteiroae, 

 Delagoa Bay ("Bot. Mag." t. 6927) ; C. multiflora (" Ref. Bot.," t. 10) ; 

 C. radicans, and C. Bendallii (Transvaal). 



Ceropegias, though succulent, appear to do much the best, as a rule, in 

 a moist house. This has been found particularly true of C. Wooclii. C. 

 geminifera, recently received, and of which I do not yet know the native 

 country, is a most curious plant ; the stems are slender and not very 

 leafy, but stuck all over with sausage-shaped tubers. 



Sarcostemma. — One species, S. viminale, is often cultivated in 

 succulent collections, though of little interest. It consists of long green 

 leafless stems the size of a quill which never seem to produce a flower. 

 The flowers are small, produced in cymes. This species grows in the 

 Welwitschia country. 



Piarantlms. — This genus is allied to Boucerosia, and may be typified 

 by the plant figured in "Bot. Mag.," t. 1648 as Stapelia pulla. There 

 are about six species, none of which appears to be in cultivation. The 

 attention of collectors may therefore be called to this genus. It is like 

 Stapelia, but with flowers usually in fascicles and with very narrow 

 corolla lobes. 



Hoodia. — A most remarkable genus composed of about three species, 

 with low, many-angled leafless stems and large campanulate flowers. In 

 H. Gordoni (" Bot Mag.," t. 6228) of Little Namaqualand, the flowers 

 are 4 in. across, of primrcse-yellow colour with a flush of pink in the 

 centre. The vertical angles are not markedly broken up into tubercles. 

 In H. Bainii (" Bot. Mag.," t. 6348) the flowers are smaller, of a pinkish- 

 yellow colour, and the angles are broken up into compressed tubercles 

 each bearing a spine. It is only by skill and good fortune that these 

 plants can be kept for any length of time. " Treat as a Phalaenopsis " is 

 advice I received at Kew, and the treatment has been successful ; which 

 illustrates my dictum that a plant should not necessarily be kept dry 

 because it is succulent. 



Podanthes. — A genus of Stapelia-like plants — often known under the 

 genus Stapelia — but with corolla described as broadly campanulate, 

 Stapelia being rotate or reflexed. S. geminata (" Bot. Mag.," t. 1326) is 

 counted a Podanthes in the " Genera Plantarum," so also is S. verrucosa 

 (" Bot. Mag.," t. 786). Perhaps too near Staj)elia. 



Duvalia.— Stapelia-like plants often referred to that genus, but the 

 corolla has a broadly campanulate lower part with an elevated ring at 

 the throat. It has the scales of the interior corona incumbent, while 

 Ilwrnia has the same scales erect, and a tooth in each sinus of the 

 corolla, which Ducalia has not. It is of similar interest to Stapelia, but 

 the flowers are less striking. D. reclinata ("Bot. Mag.," t, 1397) and 



