8 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Himalayan Rhodiolas are in cultivation, and they are interesting 

 plants. Farther north, in Tibet and Afghanistan, some very pecuHar 

 Sedums occur, such as 5. Balfouri, S. Hohsonii, S. Karpelesae, S. 

 pachyclados, which I group with the Rhodiolas. For the rest, the 

 Himalayan and Tibetan flora includes a few of the Japonica series 

 (which find here their western limit), a few small annuals, and some 

 miscellanea, such as the Telephium S. Ewersii. Altogether close on 

 fifty species are found within this region, almost all of them being 

 perennials ; about a dozen of them are in cultivation. 



China. 



In Forbes and Hemsley's "Enumeration of the Plants of China " 

 (which included the area extending from Formosa on the south to 

 Korea on the north), published in 1887, 28 species constituted the hst 

 of Sedums. The floral wealth of the interior of China was at that 

 time unknown. Since then the extraordinary results of the botanical 

 explorations of Henry, Wilson, Forrest, and the French missionaries 

 have been published ; hundreds of new plants have been described, 

 and among them are at least 90 new species of Sedum. Most of these 

 are from the inaccessible western provinces, and have been described 

 almost entirely from dried specimens. Very few of them are as yet 

 in cultivation. Many are small plants of the Japonica section, of 

 no great horticultural importance ; but they include a number of 

 Rhodiolas, and some very interesting plants allied to the section 

 Telephium, for which two new sections of the genus, Pseudorhodiola * 

 and Giraldiina.t have been created ; one species belonging to the first 

 of these groups (S. yunnanense var. valerianoides) is in cultivation. 



The earliest Sedums to come to us from China were spectabile and 

 sarmentosum, and up to the present few have followed them. Not 

 more than 30 of the 120 or so species known to occur in China are at 

 present in cultivation. While the Japonica section cannot be expected 

 to yield much of garden value, we may look for some interesting species 

 among the Chinese Rhodiolas. Some of the Chinese Sedums, such as 

 S. Chaneti and S. limuloides, are very curious plants indeed. 



Literature. — Forbes and Hemsley, " Enumeration of all the 

 Plants known from China. ..." Journ. Linn. Soc, BoL, 23. R. Hamet, 

 " Enumeration and Description of Species of Sedum {Plantae Chinenses 

 Forresiianae)." Notes R. Bot. Garden Edinb., 5, 115, 1912. L. Diels, 

 " Catalogue of all the Plants collected by George Forrest . . ., 1904, 1905, 

 1906." 76tW., 7. 1912-3. R. Hamet, " Enumeration of Crassulaceae 

 collected in China" [by many collectors]. Ibid., 8, 139, 1913. 



Japan. 



In Japan, the latest census (by Matsumura, 1912) puts the 

 Sedum flora at 25 species, which subsequent additions raise to over 



* Pseudorhodiola Diels in Engler's Bot. Jahrbucher, 29 (1901), p. 360. 

 ■f Giraldiina Diels in Engler's Bot. Jahrbucher, 36 {1905), Beibl. 82, p. 48. 



