TREES AND SHRUBS. 



EHODODEXDR(W KAEMPFEEI, Planch. 



Rhododendron Kaempferi, Planchon, Flore des Serr. ix. 77 (1853). 

 Rhododendron Sieboldi, Miquel, Ann. Mus. Lugd.-Bat. i. 33, excl. var. (1863). 

 Rhododeneron Indicum, var. Kaempferi, Maximowicz, M'em. Acad. Sci. St. Petersbourg, 



se'r. 7, xii. 38 (1866). 

 Azalea Indica, var. Kaempferi, Rehder, Bailey Cycl. Am. Hort. i. 122 (1900) ; Mailer's 



Deutsch. Gartn.-Zeit. xvii. 417, figs. 



Leaves deciduous, or a few small ones below the flower buds persistent until spring, mem- 

 branaceous, elliptic or broadly elliptic, sometimes nearly rhombic or occasionally elliptic-ovate, 

 acute at the ends, mucronate at the apex, with a minute callous mucro, ciliate, bright green 

 above, paler green beneath, setose on both surfaces, with appressed rufous hairs most abun- 

 dant on the midribs and veins and on the petioles, from 3 to 6 centimetres long and from 1 to 

 2.5 centimetres broad; petioles 2 millimetres in length. Flowers appearing with or shortly before 

 the leaves, in two to four-flowered umbels, from terminal buds ; corolla rotate-campanulate, bright 

 orange-red to pink, from 4 to 5 centimetres in diameter ; lobes oval, obtuse, about 2 centimetres 

 long, longer than the tube ; calyx-lobes persistent, oval to oblong-ovate or oblong-obovate, obtuse, 

 ruf ously setose outside, long-ciliate, nearly glabrous on the inside, about 5 millimetres in length ; 

 pedicels densely ruf ously setose, from 4 to 7 millimetres long ; stamens five, slightly shorter than 

 the lobes of the corolla or nearly as long ; anthers yellow, oval ; style exserted, purple, ovary 

 rufously setose. Capsule conic-ovoid, narrowed toward the truncate apex, surrounded at the 

 base by the persistent calyx, rufously hirsute, 1.2 centimetres long, splitting at maturity nearly 

 to the base into five valves separating from the placentif erous columella ; seeds 1 millimetre long, 

 irregularly ovoid, brown. 



A slender loosely branched shrub, sometimes 3 to 4 metres high, but usually lower, with forked 

 or indistinctly whorled branches, and densely rufously setose branchlets, becoming gray or 

 grayish brown, their bark finally peeling off in thin threads. Winter-buds terminal, ovate, from 

 5 to 8 millimetres long, consisting of two to four scales, rufously setose and of almost equal 

 length, supported at the base by several small leaves persisting during the winter. Flowers appear- 

 ing at the Arnold Arboretum about the middle of May, and on the high mountains of Japan in 

 June and July. Capsules ripen in September. 



Japan : on the mountains of Hokkaido and Hondo ; Hokkaido : Sapporo, Prov. Ishakari, May 

 8, 1895, Chilose, Prov. Iburi, June 12, 1889, Hakodate Yama, July 29, 1888, Prov. Hidaka, 

 T. Tokubuchi, Samani Sando, Prov. Hidaka, June 19, 1884, K. Miyabe ; Hondo : shores of Lake 

 Chuzenzi, November 3, 1892, and Miyanoshito, August 24, 1892, C. S. Sargent, Shinano, above 

 Narai, September 3, 1905, J. G. Jack; Kiushiu, Kokusa, April 20, 1903, U. Faurie. 



Rhododendron Kaempferi has usually been regarded as a variety of the Chinese Rhododendron Indicum, hut as it 

 possesses several apparently constant characters, which distinguish it from the different forms of that species, and as it 

 is geographically well separated, it is better to treat it as a distinct species, as was proposed by Planchon in 1853. It 

 seems most closely related to Rhododendron Simsii, Planchon (Azalea Indica, Sims, not Linnaeus), of southwestern 

 China, which differs in its persistent lanceolate leaves, lanceolate calyx-lobes, and ten stamens, with purple anthers. 

 The typical Rhododendron Indicum {Azalea Indica, Linnaeus, Azalea macrantha, Bunge, Rhododendron Breynii, 

 Planchon) is easily distinguished by its persistent generally obovate and obtuse leaves, lustrous above, by its larger, 



