ENUMERATION OF THE SPECIES 57 



In 1917 I sent seeds to the same institution from Chiri-san in Korea. The 

 Japanese name for this Azalea is " Shirobana-no Kome-tsutsuji." 



Rhododendron microphyton Franchet in Bull. Soc. Bot. France 

 XXXIII. 235 (1886).— Hemsley in Jour. Linn. Soc. XXVI. 28 

 (1889). — Diels in Notes Bot. Gard. Edinburgh, VII. 309, 392 

 (PI. Chin. Forrest.) (1913). — Hutchinson in Millais, Rhodod. 210 

 (1917). 



China : prov. Yunnan, Talang, alt. 1600 m. A. Henry (No. 11,596); 

 Szemao, alt. 1600 m. A. Henry (No. 12,983); " Che-lin-se, Pe-yen- 

 tsin," May 3, 1916, Simeon Ten (Nos. 86, 86a); " Mt. Lai-chan-po, 

 Pe-yen-tsin," May2, 1916, Simeon Ten (No. 83), " Ni-kou, Pe-yen-tsin," 

 July 5, 1917, Simeon Ten (No. 417); Yunnan Fu, alt. 2000 m. April, 

 1916, 0. Schoch (No. 350 g); Tali mountain range, Lat. 25° 40' N. alt. 

 2600-3300 m. May to July, 1906, G. Forrest (No. 4172). 



I have no knowledge of this plant in a wild state but according to notes on the 

 specimens cited above it is an erect, much-branched shrub growing from 0.3 to 

 2 m. tall. The branchlets are short and twiggy and closely beset with flattened, 

 appressed red-brown bristles. The leaves are persistent, oval to lanceolate in 

 shape, from 0.5 to 3.5 cm. long and from 0.5 to 1.5 broad, acute, obtuse or rounded 

 at the apex which is mucronulate; the upper surface is dark green, the lower pallid 

 and both have scattered hairs on the midrib; the underside and the petioles 

 are clad with red-brown bristles. The flowers are borne several together at the 

 end of the branchlets and in some specimens are so numerous that the stem 

 appears to be clothed with flowers; on others the flower-clusters are sparse. The 

 corolla is rose-colored with crimson markings, with a slender, cylindrical tube 

 from 5 to 8 mm. long and spreading lobes, and varies from 1 to 2 cm. in diameter. 

 The five stamens are exserted and shorter than the style. The calyx is minute or 

 with distinct lanceolate lobes from 1 to 4 mm. long, and like the pedicels and ovary 

 is clothed with straight, shining chestnut-brown hairs. The red-brown pubescence 

 is prominent on this plant. Its small leaves and small flowers resemble those of 

 certain species of the section Lepipherum, rather than those of a species of Tsutsutsi. 

 Where it grows plentifully on open mountain-slopes it must be conspicuous when 

 in bloom, and it would be a desirable addition to gardens even as a pot plant 

 where it would not be hardy. From the altitude given by Forrest (2600-3300 m.) 

 it would appear that this species is not only the most western but the most alpine 

 of the Chinese species of the section. As Franchet points out it is the Chinese 

 analogue of the Japanese R. Tsckonoshii Maxim, and like that species exhibits 

 considerable variation in size of leaves and flowers. At first I thought Simeon 

 Ten's No. 417 with minute leaves and small flowers was a distinct variety but 

 after careful comparison and dissection I am satisfied that the distinct appearance 

 is the result of exposed ecological conditions. 



Rhododendron Seniavinii Maximowicz in Mem. Acad. Sci. St. 

 Petersbourg, sex. 7, XVI. No. 9, 33, t. 3, fig. 21-24 (Rhodod. As. 

 Or.) (1870).— Hemsley in Jour. Linn. Soc. XXVI. 30 (1889).— 

 Bretschneider, Hist. European Bot. Disc. Chin. 620 (1898). — Millais, 

 Rhodod. 240 (1917). 



