1923) WILSON, THE RHODODENDRONS OF NORTHEASTERN ASIA 45 



outside of the corolla-tube, upper surface of the leaves and the young 

 branchlets sparsely dotted with glistening orange-brown scales. Though 

 widely distributed in Japan from the extreme south to the Nikko region 

 it is nowhere really abundant. It is partial to moist woodlands and is 

 often found growing on humus-clad rocks in coniferous forests. On Mt. 

 Kirishima it is fairly common in the forests between 1000 and 4000 ft. 

 elevation. In the Cry ptomeria-f ores ts on the island of Yaku-shima I 

 found it growing occasionally on decaying tree-trunks between 1800 and 

 3000 ft. above sea-level. In the Nikko region, its northern limit, it is 

 rare. The species is named for Keisk<{> Ito, the father of modern botany 

 in Japan. 



Rhododendron Keiskei was introduced into cultivation in America 

 by J. G. Jack who sent seeds in the autumn of 1905 from Adera, Shinano 

 province, to the Arboretum of T. E. Proctor, Topsfield, Mass., where it first 

 flowered in May, 1008. It was introduced into Kew from Yokohama in 

 1908 and flowered in a pot in 1909. In Massachusetts it is not properly 

 hardy but in England it is as hardy as the average species from the Far 

 East. 



Komatsu (in Tokyo Bot. Mag. xxxi. [288] (1917)) in Japanese mentions 

 a variety as R. Keiskei var. procumbens. I think this is only a condition 

 of growth, not worthy of taxonomic recognition. 



Millais states that Mr. E. J. P. Magor has crossed R. Keiskei with 

 jR. ciliatum Hook, f., with R. lutescens Franch. and with R. arbor eum 

 Smith. The last-named of these crosses has flowered and has been named 



X Rhododendron Keiskarbor Magor in Rhodod. Soc. Notes, I. 230 



(1920). 



Rhododendron Keiskei X arboreum pink Hort. Magor. 



Rhododendron parvifolium Adams in Mem. Soc. Nat. Mosc. ix. 237 



(1834).— Ledebour, Fl. Ross. u. 921 (1846). — Turczaninow in Bull. Soc. 

 Nat. Mosc. xxi. no. 7, pt. 2, 500 (Fl. Baical. Dahur.) (1848).— Trautvetter 

 & Meyer in Middendorff, Reis. Sib. I. pt. 2, 63 (Fl. Ochot.) (1856).— Regel 

 & Tiling in Nouv. Mem. Soc. Nat. Mosc. xi. 110 (Fl. Ajan.) (1858).— Fr. 

 Schmidt in Mem. Acad. Sci. St. Petersb. ser. 7, xn. no. 2, 158 (Reis. im 

 Amur-1.) (1868). — Maximowicz in Mem. Acad. Sci. St. Petersb. ser. 7, 

 xvi. no. 9, 17 (Rhod. As. Or.) (1870).— Regel in Gartenfl. xxvi. 163, t. 904 

 (1877).— Harrow in Gard. Chron. ser. 3, xxxix. 164, figs. 66, 67 (1906). 

 Komarov in Act. Hort. Petrop. xxv. 204 (Fl. Mandsh.) (1907).— Schnei- 

 der, 111. Handb. Laubholzk. n. 476, fig. 317-a (1909).— Bean, Trees & 

 Shrubs Brit. Isl. II. 371 (1914).— Miyabe & Miyake, Fl. Sachal. 309, no. 384 

 (1915).— Millais, Rhodod. 224 (1917).— Lynch in Gard. Chron. ser. 3, 

 lxiii. 76, figs. 33, 34 (1918).— Nakai, Fl. Sylv. Kor. pt. vm. 29, t. 6 (1919). 



Azalea lapponica Pallas, Fl. Ross. II. 52, t. 70, fig. 1, a (1784), not Wahl. 

 Rhododendron palustris Turczaninow apud De Candolle, Prodr. vn. 724 



(1839). 



