ERICACEAE. — RHODODENDRON 509 
villoso, lobis patentibus late ovatis v. obovatis 6-10 mm. longis; 
stamina 8, subaequalia, corolla paullo breviora, filamentis 8-10 mm. 
longis in triente inferiore ima basi dilatata excepta villosis, antheris 
ochraceis; ovarium conicum, fere 2 mm. longum, dense lepidotum; 
stylus filiformis rectus, purpureus, 14-15 mm. longus, stamina su- 
perans, stigmate capitato atropurpureo. Capsula ovoidea, 5 mm. 
longa, lepidota, 5-valvata. 
Western Szech’uan: north of Tachien-lu, Ta-p’ao-shan, form- 
ing heaths, alt. 4000-5000 m., July 7, 1908 (No. 3467, type); vicinity 
of Tachien-lu, moorlands, alt. 3600-4600 m., June and October 1908 
(Nos. 3459, 1319, in part). 
This species is most closely allied to R. polycladum Franchet, which has nar- 
rower acute leaves, attenuate at the base and less densely scaly below, and a smaller 
calyx with two rotundate and three triangular lobes. Rhododendron ramosissimum 
Franchet, to which this new species is also closely related, differs in its foliage and 
short style. All the members of this group are very similar in general appearance 
and difficult to distinguish. The color, however, of the under surface of the leaves, 
due to the presence of lepidote glands, apparently affords a useful character for 
Separating the species. The roundish leaves, rufous-brown below, and the mem- 
branous calyx distinguish this new species from its allies. 
Rhododendron nitidulum Rehder & Wilson, n. sp. 
Frutex 0.60-1.30 m. altus, ramosissimus ramis gracilibus erectis 
V. adscendentibus; ramuli hornotini dense fusco-lepidoti; gemmae 
ovoideae, perulis paucis rotundatis in medio dorsi lepidotis ceterum 
minutissime puberulis ciliolatis. Folia coriacea, ovalia v. ovata, rarius 
elliptico-ovata, obtusa et mucronulata v. interdum acutiuscula, basi 
rotundata v. late cuneata, 7-12 mm. longa et 5-7 mm. lata, supra 
atroviridia squamulis fere contiguis flavidis nitidulis obtecta, subtus 
pallide cinereo-fulva dense squamulis pallide fulvis fere contiguis 
hitidulis obtecta, costa media utrinque fere obsoleta, nervis secun- 
is obscuris. Flores solitarii v. rarius bini e gemma terminali orti, 
Subsessiles, perulis persistentibus suffulti; calyx membranaceus, lepi- 
dotus, profunde 5-lobus, lobis plerumque subaequalibus, ovatis v. 
oblongo-ovatis, circiter 2 mm. longis, plerumque acutiusculis, apice 
Sparse ciliati, extus lepidoti; corolla infundibuliformis, violaceo- 
Purpurea, 2.5 em. diam., tubo circiter 5 mm. longo intus ad faucem 
villoso, lobis patentibus ovalibus obovatis rotundatis circiter 1 cm. 
longis et 5-7 mm. latis; stamina 8-10, corollam fere aequantia, fila- 
mentis gracilibus 8-10 mm. longis in triente inferiore basi dilatata 
