510 WILSON EXPEDITION TO CHINA 
excepta villosis, antheris ochraceis; ovarium conicum, circiter 2 mm. 
longum, dense lepidotum; stylus purpurascens, stamina superans, 
glaber, 1.5 cm. longus, stigmate capitato saepe lobato. Capsula 
matura desideratur. 
Western Szech’uan: Mupin, uplands, alt. 3300-4000 m., June 
1908 (No. 3458). 
Very closely allied to Rhododendron polycladum Franchet, which differs chiefly 
in its narrower elliptic-oblong leaves narrowed at both ends and in the darker 
brown scales on their under side. The specific name refers to the conspicuous 
glistening gland-like center of the scales on both sides of the leaves. 
Rhododendron nitidulum, var. nubigenum Rehder & Wilson, n. 
var. 
Frutex 10-35 em. altus, ramosissimus ramis erectis v. adscenden- 
tibus brevibus; ramuli hornotini dense fusco-lepidoti; gemmaeovoideae, 
obtusae, perulis paucis, inferioribus mucronatis, in medio dorsi dense 
lepidotis ceterum minutissime puberulis purpurascentibus margine 
albo-ciliolatis. Folia coriacea, in apice ramulorum congesta, aro- 
matica, ovalia, obtusa v. acutiuscula, basi late cuneata, 4-8 mm. longa 
et 3-5 mm. lata, supra atroviridia, dense glandulis flavidis nitidulis 
conspersa, subtus densissime lepidota squamulis flavido-fuscis, costa 
supra leviter impressa subtus obsoleta, nervis secundariis evanidis; 
petioli dense fusco-lepidoti, 1-2 mm. longi. Flores solitarii v. bini 
e gemma terminali orti, subsessiles; calyx variabilis, plerumque 
coloratus, membranaceus, profunde 5-lobus, lobis ovatis 2-4 T 
longis saepe inaequalibus dorso sparse lepidotis margine ciliatis; 
corolla infundibuliformis, roseo-lilacina, extus glabra, circiter 2 cm. 
diam., tubo 4-5 mm. longo intus ad faucem dense villoso, lobis ovatis 
V. obovatis rotundatis 8-10 mm. longis et circiter 5 mm. latis, 
stamina 10, corollam subaequantia, filamentis 10-12 mm. longs 
infra medium villosis basi complanatis et glabris, antheris ochraceis; 
ovarium conicum 2 mm. longum, dense lepidotum; stylus circiter 
12 mm. longus, stamina superans, purpureus, glaber, stigmate capi- 
tato atropurpureo. Capsula ovoidea, 5 mm. longa, obtusa, lepidota, 
5-valvata. 
Western Szech’uan: vicinity of Tachien-lu, moorlands, alt. 
4300-5000 m., July 1908 (No. 3461, type); same locality, 1903 (Veiteh 
Exped. No. 3935). 
ere oer it. smaller leaves, 
dia one o TELE "umuelly colored, ealyx, It is the mos alpine 
all the Rhododendrons known from the neighborhood of Tachien-lu. 
