178 JOURNAL OF THE ARNOLD ARBORETUM [vol. vi 



22. Rhododendron Latoucheae Franchet in Bull. Soc. Bot. France, 

 xlvi. 210 (1899).— Millais, Rhodod. 200 (1917); n. 171 (1924). 



A shrub with rigid twiggy gray and glabrous branches. Leaves 

 crowded at end of shoot, semi-verticillate, rigid, coriaceous, glabrous, 

 oblong-oblanceolate to oblong-lanceolate, 7-10 cm. long, 1.5-3 cm., 

 usually 2-2.5 cm. broad, long-acuminate, base narrowed, cuneate, upper 

 surface dark lustrous green, lower pallid, costa impressed above, promi- 

 nent below; petiole rigid, 0.8-1.2 cm. long. Flowers clustered at end of 

 shoots in 1-flowered lateral fascicles; pedicel glabrous, encased in semi- 



persistent paleaceous concave imbricated acute glabrous ciliolate bud- 

 scales; calyx annular, glabrous, minutely 5-toothed, teeth sometimes 

 irregular in size, up to 3 mm. long; corolla funnelform-campanulate, 

 3.5-4.5 cm. long and wide, very deeply 5-lobed, tube narrow, about 1 

 cm. long, lobes spreading, oblong-ovate to spathulate, rounded, often 

 short-apiculate ; stamens 10, of very unequal length, longest slightly 

 exceeding corolla, filaments flattened and villose at base, anthers oval; 

 pistil glabrous, overtopping stamens, exserted, ovary cylindric, about 

 0.8 cm. long, furrowed, style filiform, curving, slightly thickened below 



the capitate obscurely lobed stigma. Fruit not seen. 

 Habitat: southeastern China, Fckien province. 



A very glabrous species distinguished by its narrow rigid coriaceous 

 caudate leaves with deeply impressed costa and immersed secondary 

 nerves, its 1-flowered lateral fascicles, the pedicels sheathed in paleaceous 

 bud-scales, and by the deeply lobed corolla, villose filaments and gla- 

 brous pistil. The calyx teeth are sometimes elongated and as much as 3 

 mm. long, a phenomenon known among other species of the same group. 

 It is evidently a very elegant plant most closely related to R. Wilsonae 

 Ifemsl. and Wils. which has broader ovate-lanceolate leaves and shorter 

 genitalia. 



This species is unknown to me in a living state but I have a photo- 

 graph of the type specimen in Herb. Paris and four sheets on loan from 



Herb. Edinburgh and collected by J. de La Touche. The thick narrow 

 caudate-acuminate leaves with deeply impressed midrib are striking. 



23. Rhododendron Championae Hooker in Bot. Mag. lxxvii. t. K>09 

 (1851). — Bentham in Hooker, Jour. Hot. Kew Gard. Misc. iv. 299 (1852); 

 Fl. Ilongk. 200 (1861).— Maximowicz in Mem. Acad. Sci, St. Petersb. 

 s6r. 7, xvi. no. 9, 33 (Rhodod. As. Or.) (1S70). — Hemsley in Jour. Linn. 

 Soc. xxvi. 21 (18S9).— Bean in Flora k Sylva, in. 163 (1905).— Dunn 

 & Tutcher in Kew Bull. Misc. Inform, add. ser. x. 155 (FL lvwangtung & 

 Ilongk.) (1912).— Millais, Rhodod. 141 (1917); n. 107 (1924). 



Bush about 2 m. tall, branches moderately stout, rigid, glandular- 

 hirsute in the first year; bud-scales ciliolate, outer pubescent, inner 



glandular. Leaves crowded at ends of shoots, strongly veined, membran- 

 ous, oblong-lanceolate, 5.5-16 cm., usually 8-12 cm. long, 2.5-5 cm. 

 usually 3-4 cm. wide, acute, mucronulate, base cuneate, rarely rounded, 



