210 TRANSACTIONS OF THE [Sess. lxxxi 



Monbeig's plant to Bit. gymnantJtum and make the sugges- 

 tion that Henry's No. 10,275 (our Rh. onengtszense) and the 

 other Henryan plants mentioned (they say nothing about 

 L0,301) " might be considered as constituting a pubescent 

 variety of RJi. gymnanthum." Rehder and Wilson are 

 right in identifj'ing Monbeig's No. 4 as RIl. gyvmanthum, 

 and in bringing Henry's No. 10,275 nearer to Rh. gyninan- 

 fhu7n than to Rh. irroratiim [ but there is not identity 

 between any of Henry's specimens and either RJt. gymnan- 

 f/iu'in or Rh. irroratiim. They can all be separated by 

 (juite satisfactory characters as distinct species, and I am 

 describing some of them in these pages. Henry's specimens 

 are to be identified thus : — 



No. 10,275 is Rh. mengtszense, Balf. f. ot W. W. Sm. 



No. 10,801 is probably the same as Hancock's No. 179 

 from Mengtsz, but the material is inadequate. See what I 

 say on p. 173. 



No. 10,853 is Rli. spmiotrichuin, Balf. f. et W. W. Sm. 



No. 11,066 is Rli. pogo7iostylum, Balf. f. et W. W. Sm. 



No. 11,067 is RJt. adenostemonum, Balf. f. et W. W. Sm. 



No. 11, 067b is fruiting specimen of No. 11,066. 



I am indebted to the Director of Kew for the loan of 

 Henry's specimens for examination. 



Rliododendron pogonostyluDi, Balf. f. et W. W. Sm.^ 



Small tree reachino- 4-5 m. in heigrht with medium thick 

 branches. Branches a year old dirty grey colour enclosed 



1 Rhodudewlron poijonost]/luiii, Balf. f. et W. W. Sm. — Arbor parva ad 

 4'5 m. iilta ramis crassiusculis. Raiuuli annotini sordide grisei glan- 

 diilis paucis clavatis rubris nigricaiitibus breviter .stipitatis et pili8 

 pluriiiiis floccosis cinereo-marcidis stratum compactuin facientibus 

 induti tandem glabresceutes ilavido-vi rides et glandulanim detersilium 

 cicatricibu.s punctulati. Alal^astra igiiota. Folia petiolata ad 14 cm. 

 longa ; lamina rigide coriacea oblongodanceolata vel oblongo-ovata ad 

 12 cm. longa ad 4'5 cm. lata apice attenuata acuta nunc .subrosti'ata tuber- 

 culo parvo atro-riibente corueo terminata margine cartilaginea leviter 

 recui'va iiudulata et cicatricibus subas])erata basi obtusa vel subrotun- 

 ilata supra olivacea vel fulvo-olivacea opaca costa media sulcata sulco 

 pilis tloccosis et glandulis paucis marcidis plus minusve impleto venis 

 primariis utrinsecusad Kj subsulcatis caeteroipiin plana evenulosa primo 

 aspectu gialjra .sed pilorum floccosorum gland ularuiu([ue vestigiis notata 

 subtus lielvola costa media venisque primariis elevatis jiaullo erubescen- 

 tibus venularum reti nunc plus minusve prominulo ubi(iue glandularum 

 (an pilorum ;') pediljus rubris punctulata ; petiolus crassiusculus ad 2 cm. 

 •longus supra sulcatus strato sordide cinereo pilorum floccosorum marci- 



