1924) WILSON. THE RHODODENDRONS OF HUPEH 91 



without petiole 4-6 cm. long, base truncate, apex obtuse with thickened 

 mucro, margins revolute, upper surface smooth, lower clad with rufous 

 floccose tomentum; petiole 0.3-0.4 cm. long, woolly. Flowers from 4 to 

 8 in a terminal cluster, pedicels 1.2-1.8 cm. long, clothed with pilose woolly 

 hairs, calyx membranous, yellowish, lobes ovate-lanceolate, 0.3-0.4 cm. 

 long, acute; corolla 5-lobed, pink, campanulate, about 3 cm. long, pubes- 

 cent within on lower part, elsewhere glabrous; stamens 10, included, 

 filaments pilose below; ovary glandular-pilose, style clad with long hairs 

 near base. Fruit 1.2 cm. long, clothed with glandular and rufous pubes- 

 cence. 



This species was discovered near Touan-tchen in the district of Taning 



Hsien at an altitude of 2500 m. by Pere P. Farges. Franchet states that 

 it belongs to the same group as R. Edgeworthii Hook, f . and is distinguished 

 by the smooth upper surface of the small leaves, by its rufous floccose 

 tomentum which soon disappears and by the shape of its well-developed 

 calyx. It is not in cultivation and is quite unknown to me. 



Rhododendron hypoglaucum Hemsley in Jour. Linn. Soc. xxvi. 25 

 (1889).— Diels in Bot. Jahrb. xxix. 512 (1910).— Bean in Flora & Sylva, 

 in. 164 (1905); Trees & Shrubs Brit. Isles, n. 361 (1914).— Hemsley & 

 Wilson in Kew Bull. Misc. Inform. 1910, 111.— Pampanini in Nuov. Giorn. 

 Bot. Ital. n. ser. xvn. 683 (1910).— Rehder & Wilson in Sargent, PL 

 Wilson. I. 527 (1913).— Hutchinson in Bot. Mag. cxlii. t. 8649 (1916). 

 Millais, Rhodod. 188 (1917). 



Rhododendron gracilipes Franchet in Jour, de Bot. ix. 391 (1895).— Hutchinson 



in Millais, Rhodod. 174 (1917). 

 Rhododendron chionophyllum Diels in Bot. Jahrb. xxix. 512 (1900). 



Hutchinson in Millais, Rhodod. 143 (1917). 

 Bush from 1.5 to 5 m. tall with the first year branches bright green, 

 later pale gray; winterbuds elongate, acute, glabrous, the bud-scales 

 finely ciliolate. Leaves coriaceous, rigid, oblong-elliptic to oblong-oblanceo- 

 late, without petiole, 5-12 cm. long, 2-4.5 cm. wide, acute, mucronate, 

 base narrowed often cuneate, upper surface lustrous green with impressed 

 midrib, lower completely covered with a white crustaceous indumentum; 

 petiole stout, 1.5-2.5 cm. long, glabrous. Flowers 4 to 10 or more in an 

 umbellate raceme; rhachis 1-2.5 cm. long; pedicels slender, 1-3.5 cm. long, 

 pubescent and slightly glandular or glabrous; calyx minute, 5-toothed, gla- 

 brous or sparsely glandular pubescent, teeth often glandular-ciliolate ; co- 

 rolla 5-lobed, pink or white, f unnelform, 3-4.5 cm. long, 3.5-5 cm. wide, 

 the posterior part spotted with rose-color, sometimes sparsely pubescent 

 near base within, lobes rounded; stamens usually 10, of unequal length, 

 shorter than the corolla, filaments slightly pubescent near base, anthers 

 rose-color; pistil slightly exserted, ovary narrow-ovoid, furrowed, glabrous 

 or puberulous and glandular, style filiform, glabrous, stigma capitate, 

 lobed. Fruit oblong-cylindric, 1-1.5 cm. long, 0.3-0.4 cm. wide, curved, 

 furrowed, slightly verruculose; seed dark brown, 1-2 mm. long, oval, 

 slightly compressed, wing minute. 



