DIAGNOSES SPECIERUM NOVARUM. 231 
dote or hairy. Corolla open 1-1% inches across, blue tinged 
purple without markings. Forrest No. 19,918. 
An estrigillose species of the Saluenense Series. Forrest’s 
gatherings of 1919 have the flowers mostly in a monstrous condi- 
tion—the calyx and corolla being much enlarged and leathery, 
the stamens and gynaeceum more or less abortive. Perfect 
flowers in the 1921 collections enable me to give a description of 
the plant as a new species. As such it is readily recognised by 
the dark black-green of the upper leaf surface frosted with pel- 
tate scales quite like what is found in Rh. chameunum, Balf. f. 
et Forrest from further south (Kari Pass and Lji-ti-ping in Yun- 
nan) but that species has much smaller leaves and has also 
densely strigillose stems. 
Rhododendron aperantum, Balf. f. et Ward. 
Fruticulus late patens vix 2 dm. altus. Rami crassi addita- 
mento annuo brevissimo per annos plurimos perulati, in juven- 
tute sebaceo-floccosi; perulae extimae rotundatae apiculatae 
interiores a basi fata ligulatae margine apiceque rufo-pilosae 
dorso epilosae. Folia breviter petiolata ad 4 cm. longa ad 
apicem ramorum aggregata ; lamina crasse coriacea rigida ovalis 
vel obovalis ad 3.5 cm. longa 2 cm. lata, apice rotundata vel late 
obtusa mucronatim apiculata, margine cartilaginea nunc recurva, 
basi angustata; supra laete viridis opaca saepe purpurascens 
maturitate glabra saepe subrugulosa et subbullata, costa media 
anguste sulcata venisque primariis utrinsecus ad 8 impressis; 
subtus primo albido-grisea laevis intense cerifera demum 
brunneo-viridis, costa media elevata sparsim sebaceo-floccosa (in 
juventute lamina utrinque plus minusve pilis sebaceis floccosis 
detersilibus induta); petiolus glabrescens 5 mm. longus. Um- 
bella 4-flora; bracteae intimae membranaceae flavidae oblongae 
truncatae et apiculatae cucullatae sericeae ad 3 cm. longae; brac- 
teolae filiformes ad 1 cm. longae sericeae ; pedicelli ad 2 cm. longi 
setulis glandulosis vestiti et pilis sebaceis paucis intermediis 
praediti. Calyx cupuliformis submembranaceus circ. 5 mm. 
longus; cupulae extus glabrae margo undulatus. et setuloso- 
glandulosus. Corolla magna rosea tubuloso-campanulata circ. 
4.5 cm. longa 5-loba ; lobi rotundati circ. 1 cm. longi 1.7 cm. lati. 
Stamina 10 circum stylum aggregata subaequalia circ. 2.5 cm. 
longa; filamenta deorsum dilatata glabra. Discus glaber. Gy- 
naeceum circ. 3.7 cm. longum; ovarium circ. 5 mm. longum con- 
oideum truncatum sulcatum setulis glanduliferis et pilis fasciatis 
adpressis vestitum ; stylus glaber stigmate parvo. Species Seriei 
Neriiflori. 
N.E. Upper Burma. Chawchi Pass. Alt. 12,000 ft. This 
may = Farrer 1184 of which only a belated flower was seen. 
