190 TKAXSACTIONS OF THE [Sess. lxxxi 



on the surface, yet the effect somehow is of a less shining- 

 surface. Otherwise Rh. lukiangense can be diagnosed from 

 Rh. ceraceitiii by the unequal corolla-lobes, the spotted 

 corolla, the glabrous pedicels, calyx, stamens, and ovary. 



The very glossy surface of the under-leaf in RIt. ceraceum 

 distinguishes it at sight from other species which it resembles 

 in many ways and with which it is allied. The distinctive 

 association of marks of Rh. ceraceum in the series is — the 

 wax-coating, no glands, floccose-tomentose rhachis of in- 

 florescence, puberulous pedicels and calyx, 5-lobed corolla 

 glabrous outside and inside, puberulous ovary. 



Rhododendron eritimum, Balf. f. et W. W. Sm.^ 



Shrub reaching about 6 m. in height with thick glabrous 

 branches. Foliage-leaf buds unknown. Leaves shortly 



' Rhododendron eritimum, Balf. f. et W. W. Sm. — Frutex ad 6 m. altus 

 raiui-s cra.ssi8 glabris. Alabastra et folia juvenilia ignota. Folia breviter 

 petiolata ad 18 cm. longa ; lamina subrigida subcrasse coriacea anguste 

 ol)longa ad 1 7 cm. longa ad 4'5 cm. lata apice obtu.sa subro-strata mucrouata 

 margine snbrevoluta cartilaginea obscure undulata baud asperata basi 

 anguste cuneata utriuque glaberrima .supra olivacea costa media sulcata 

 leviter erubescente venis primarii.s utrinsecus ad 18 paullo sulcatis 

 caeteroquin miuutissinie jiapillata subtus glauca costa media elevata 

 venis primariis erubescentibus et venularum reti imiuersis caeteroquin 

 laevis obscure aurantiaco-punctulata papillis globosis epidermicis minute 

 induta ; peLiolus vix 1 cm. lougus crassus glaber. Flores circ. 15 in 

 inflorescentiam racemoso-umbellatam dispositi rliachi circ. r2 cm. longa 

 sparsim (sed in axillis bractearum dense) kermesino-lloccosa ; bracteae 

 fertiles membranaceae spadiceo-brunneae circ. 2"5 cm. longae circ. 9 mm. 

 latae extus dense albido- et rufo-sericeae intus superne plus minusve 

 adpresso-pubescentes ; bracteolae anguste ligulatae 1 cm. longae fere 

 1 mm. latae pL-dicello3 superantes dense ])ilo.sae ; pedicelli circ. 8 mm. 

 longi subcrassi Hoccis paucis conspersi glal)re3centes. Calyx minutus 

 circ. 2 mm. longus cupularis glaberrimus, lobis ovatis vel rotundaLis vel 

 deltoideis margine subfimbriatis. Corolla lurido-rosea late tubulo.so- 

 campanulata ad 4 cm. longa extus intusque glabra varo notata sed 

 emaculata 7-lobata, lobis rotundatis hand luagnis circ. 13 cm. longis circ. 

 1'6 cm. latis emarginatissubcrenulatis. Stamina 14 inaeqiialia longiora 

 circ. 3"3 cm. longa breviora circ. 2 cm. aniberis atro-puri)ureis circ. 

 3 mm. longi.s, filamentis vix deorsum latioribiis glaberrimis. Discus 

 glaberrimus. Gynaeceum circ. 3'5 cm. longuni corolla paullo brevius 

 .stamina paullo superans ; ovarium cylindricum angustum paullosulcatum 

 atro-puri)ureum glaberrimum circ. 5 mm. longum ; stylus glaljer gracilis 

 in stigma lobulatum baud discoideuiu paullo aiiipliatus. 



Si)ecies Rh. authosphaero, Diels affinis sed foliis anguste oblongis, petiolo 

 glabro, i»edicellis brevioribus baud 1 cm. longis eglandulosis, calyce 

 glaberrimo, corolla 7-lobata intus glabra, sLaminum 14 filamentis glabris, 

 ovario glaberrimo recogno.scenda ; in forma foliorum lih. agado, Balf. f. 

 et W. VV. Sm. similis .sed ilia species pedicellos et calyces et ovaria et 

 stylos glandulosos, jjedicellos 1 cm. longos, coroUae tubum intus puber- 



