ERICACEAE. — RHODODENDRON 543 



Rhododendron Davidii Franchet in Bull. Soc. Bot. France, XXXIII. 

 230 (1886); in Nouv. Arch. Mus. Paris, ser. 2, X. 45, t. 11 {PI. David. 

 XL 85, t. 11) (1888). — Schneider, III. Handb. Lauhholzk. II. 485, 

 fig. 320 f-g, 321 g (1909). — Hemsley & Wilson in Kew Bull. Misc. 

 Inform. 1910, 113. 



Western Szech'uan: south-east of Tachien-lu, woods, alt. 3300 

 m., June 1908 (No. 3415; bush 1-4 m. tall, flowers bright rosy-red); 

 Mupin, woodlands, alt. 3000-3300 m., October 1910 (No. 4261 ; bush 

 3-4 m. tall); without precise locahty, alt. 1300-2300 m., May 1904 

 (Veitch Exped. No. 3978). 



The elongated rhachis of the inflorescence, glandular ovary, longer leaves, acute 

 or shortly acuminate and cuneate at the base, and ovoid acutish winter-buds 

 distinguish this from the closely related R. oreodoxa Franchet. 



Rhododendron Openshawianum Rehder & Wilson, n. sp. 



Frutex 6-metralis ramulis crassis virescentibus initio tomento 

 floccoso cinereo-albido vestitis vetustioribus pallide brunneis ; gemmae 

 ovatae, obtusae, perulis basalibus longe aristatis. Folia tenuiter 

 coriacea, oblongo-oblanceolata, acuminata, basi cuneata, margine 

 leviter revoluta, 10-15 cm. longa et 2-3.5 cm. lata, utrinque glabra, 

 supra obscure viridia, subtus pallidiora, reticulata, costa media supra 

 impressa subtus elevata, nervis utrinsecus 12-14 supra leviter im- 

 pressis subtus leviter elevatis; petioH crassi, 8-12 mm. longi, supra 

 plani, initio praecipue subtus floccoso-tomentosi ut costa media in 

 parte inferiore. Flores ignoti. Fructus 8-10, umbellato-racemosi; 

 rhachis 1.5-2 cm. longa, sparse villosa; pedicelli crassi, 3-4.5 cm. 

 longi, erecto patentes, glabri; capsula oblongo-ovoidea, apice fere 

 truncata, 2.5-3 cm. longa et 1-1,2 cm. diam., glabra, multilocularis, 

 stylo persistente circiter 3 cm. longo, stigmate magno applanato; 

 calyx annularis, dentibus 5 minutis, glaber; semina oblonga, 3-3.5 mm. 

 longa, flavido-brunnea, utrinque alata. 



Western Szech'uan: Yung-chingHsien,Wa-wu-shan, woodlands, 

 alt. 2300-2800 m., September 12, 1908 (No. 3414). 



The smaller, long-acuminate leaves, and short, thick, oblong-ovoid fruits suf- 

 ficiently distinguish this species from its nearest relatives R. calophyium Franchet 

 and R. sutchuenense Franchet. 



It is named for the Rev. Harry Openshaw of the American Baptist Mission, 

 Yachou Fu, western Szech'uan, who on several occasions during the year 1908 

 rendered valuable services to the Arboretum Expedition. 



