BALFOUR—NEW SPECIES OF RHODODENDRON. 125 
notata, calycis lobos rarissime ligulatos, corollam majorem, 
stylum multo breviorem possedit. 
W. Yunnan. Hills north of Tengyueh. Open situations in 
thickets. Alt. 7000 ft. Lat. 25°15’ N. Compact shrub of 8-12 ft. 
In fruit. Foliage coriaceous. G. Forrest. No. 7673. May Igi2. 
The rigid foliage and stiff branches of this species in the 
dried state recall Rh. siderophyllum, Franch., but it is far re- 
moved from that species and belongs to an altogether different 
phylum in the genus. Rh. nematocalyx is one of the Stamineum 
series, and its nearest ally seems to be Rh. oxyphyllum, Franch., 
a plant collected by Prince Henri d’Orleans in South Yunnan 
between “ Muonglé et Keu-ma-tzé,” and as yet not known from 
elsewhere. I have not seen dried specimens of Franchet’s RA. 
oxyphyllum which is said to be in cultivation. None of the 
living plants that have come to me match the description of 
his species given by Franchet. 
- Rhododendron niphargum, Balf. f. et Ward. 
Frutex ad 8 m. altus ramis crassis. Ramuli hornotini circ. 
5 mm. diam. niveo-tomentosi, annotini glabrescentes vel tomenti 
vestigiis nigricantibus induti tandem sordide grisei decorticantes. 
Alabastrorum in tomento immersorum perulae fulvae dorso 
argenteo-tomentosae margine dense ciliatae intus pilis adpressis 
plus minusve indutae exteriores circ. 7.5 mm. longae in dimidio 
inferiore subrotundatae sursum caudatae caudae apice revoluto, 
interiores ecaudatae subrotundatae circ. 4 mm. diam. Folia 
breviter petiolata ad 21 cm. longa sub anthesi deflexa ; lamina 
coriacea late oblanceolata vel oblongo-oblanceolata vel oblongo- 
obovata ad 19.5 cm. longa 6.5 cm. lata apice obtusa corneo- 
mucronata margine plana perspicue cartilaginea deorsum a 
quadrante supremo in petiolum gradatim attenuata supra sub- 
atro-viridis vix nitens in modum squali corii rugulosa costa 
media subrubide colorata sulcata venis primariis utrinsecus 
circ. 15 subsulcatis pinnatim adscendentibus superficie caetero- 
quin subplana pilorum juvenilium vestigiis plus minusve notata 
(in juventute pilorum strato niveo tenui integro vestita, pilis 
ex axi centrali saepe multo elongato a basi ex toto multo atque 
iterum ramosis ramis tenuibus intertextis floccos mox post 
evolutionem alabastrorum detersiles facientibus), subtus nivea 
costa media elevata primo nigro-purpurea puberula deinde 
straminea glabrescente caeteroquin indumento persistente com- 
Ppacto scintillante subnitente laevi haud favoso bistrato venu- 
larum rete occludente et venas primarias elevatas tegente 
vestita, strati inferi pilis ab apice stipitis brevis horizontaliter et 
radiatim ramosis ramis pilorum contiguorum vesiculosis brevibus 
latis plus minusve agglutinatis, strati superi pilis e ramulis 
