ROSACEAE. — SORBUS 277 



fruit with firm granulate flesh; here belong S. granulom, S. verrucosa, S. aronioides 

 and most other species. To the second groui) which has doul)!}' serrate leaves with 

 usually numerous straight veins and ovoid smooth fruits with soft flesh, belong 

 S. japonica, S. alnifolia, S. Hemsleyi and S. Folgneri. An intermediate group 

 is formed by S. meliosviifolia and S. caloneura which have the leaves of the second 

 and the fruit of the first group. The species of the first group are very unlike the 

 true Arias in the venation of their leaves which resemble more those of S. mega- 

 locarpa and those of the section Aronia, while the leaves of the second group are 

 much like those of S. Aria with wliich they were placed by Decaisne. In Sorbus 

 as distinguished from Micromelcs two other species have been placed, which show 

 that the behavior of the calyx is of minor taxonomic value; one of them is S. 

 Zahlbruckncri, which is in every respect like a form of aS'. Hemsleyi or of S. Folgneri 

 with glabrescent leaves, but with a persistent calyx, though the fruit is in all other 

 characters like that of S. Folgneri; the other species is S. subfusca Boissier, which 

 is in foliage and in fruit very much like S. Aria and approaches it even in the 

 structure of the flowers which have, according to Schneider's figure, a slightly 

 perigynous disk, but its fruit has a deciduous calyx. All this shows that the species 

 of Sorbus with deciduous calyx do not form a natural group and that the behavior 

 of the calyx is apparently a phylogcnetically recent character and therefore of 

 secondary importance. 



Besides the species enumerated above the following Himalayan species now 

 enumerated either under Micromelcs or under Pyrus must be transferred to Sorbus. 

 Sorbus ferruginea Rehder, n. comb. 

 Sorbus sikkimensis Wenzig, 8 ferruginea Wenzig in Linnaea, XXXVIII. 60 



(1874). 

 Pyrus ferruginea Hooker f., Fl. Brit. Ind. II. 379 (1879). — Brandis, Ind. 



Trees, 292 (1906). 

 Micromeles ferruginea, Koehne, Gait. Pomac. 21 (sphalmate " ferruginosa ") 

 (1890). — Schneider, III. Handb. Laubholzk. 1. 700 (1906). 

 Bhot an : Griflfith (No. 2074, ex Wenzig). 

 Sorbus Thomsonii Rehder, n. comb. 



Pyrus Thomsoni King mss. apud Hooker f., Fl. Brit. Ind. II. 379 (1879). — 

 Brandis, Ind. Trees, 292 (1906). 

 Sikkim: T. Thomson (fruits); "8000 ped.," /. D. Hooker (flowers). 

 This species seems near S. Kcissleri Rehder with which it agrees in the venation 

 and in the short petioles. Hooker states that young flowering specimens of this 

 species were distributed as " Photinia arguta Wall, var." and were quoted by 

 Decaisne under his Micromeles verrticosa, but a specimen under that name in the 

 Gray Herbarium collected by Hooker & Thomson consists of a fruiting branch and 

 of a branch with mature leaves only; these both belong to S. verrucosa; and 

 possibly Decaisne had a similar specimen and not the flowering branches of S. 

 Thomsonii, referred to by Hooker. 

 Sorbus Griffithii Rehder, n. comb. 

 Sorbus sikkimensis, y microcarpa Wenzig in Linnaea, XXXVIII. 59 (1874). 

 Sorbus (Pirus) crenata Wenzig in Linnaea, XXXVIII. 60 (non D. Don) 



(1874), quoad specimen " Grifiith No. 2076." 

 Pyrus Griffithii Hooker f., Fl. Brit. hid. II. 377 (1879). — Prain in Jour. As. 

 Soc. Bengal. LXXIII. 204 (1904). — Brandis, Ind. Trees, 291 (1906). 

 Sikkim: "East Himalaya" Griffith (No. 2076, type); "alt. 7-9000 ped." 

 J. D. Hooker ("Pyrus," fruiting branch); Senadale, May 1879, J. L. Lister; 

 Tanglo forest, October 1901, Dr. Brain's collector (No. 61, as P. rhamnoides). 



