DIAGNOSES SPECIERUM NOVARUM. 203 
et maculata aperte campanulata circ. 2 cm. longa extus epilosa 
sparsim lepidota; lobi 5 rotundati circ. 1.2 cm. diam. Stamina 
to corolla breviora inaequalia, longiora antica circ 1.7 cm. longa 
filamentis basim versus minute puberulis, breviora postica circ. 
1.2 cm. longa filamentis supra basim floccoso-villosis. Discus 
magnus 1 mm. longus glaber. Gynaeceum 1.9 cm. longum cor- 
ollam subaequans; ovarium cylindricum sulcatum truncatum 
circ. 4 mm. longum squamis carnosulis parvis dense vestitum ; 
stylus validus sursum ampliatus apiceque incrassatus circ. 1.5 
cm. longus rectus vel plus minusve a basi decurvatus glaber; 
stigma latum lobulatum. Species Seriei Trichocladi. 
Western N.W. Yunnan. Mekong-Yangtze divide. On the 
ascent of the Wei Hsi Pass. Jat. 27° 15’ N. Alt. 10,000 ft. 
Moist open situations in pine forests. Forrest No. 698. Sep- 
S.E. Tibet : Tsarong. Salween-Kiu-chiang divide. Lat. 28° 
40’ N. Long. 98° 15’ E. Open situations on the margins of 
thickets and amongst rocks. Shrub of 2-3 it Flowers very 
deep yellow. Forrest No. 18,909. June 1919. 
Western N.W. Yunnan. Ascent of the Siela Pass. Lat. 28° 
.. Alt. 11-12,000 ft. Open scrub on the margin of forest. 
Shrub of 3-4 ft. Flowers yellow. Forrest No. 16,368. April 
1918. e 
Quite a distinct species of the Trichocladum Series. It recalls 
Rh. mekongense, Franch. in many features but that species has a 
calyx with very large membranous setulose lobes. Rh. melin- 
anthum, Balf. £. et Ward is also a species near it in the series but 
Rh. melinanthum has a different kind of lepidote indumentum on 
the underleaf surface and has a much longer more delicate style. 
glo’ Rhododendron shweliense, Balf. f. et Forrest. 
Frutex aromaticus vix 1 m. altus. Rami haud perulati juv- 
eniles erubescentes, annotini circ. 1 mm. diam. lepidoti estrigillosi. 
Folia petiolata ad 5.5 cm. longa plus minusve ad apicem ramorum 
rosulatim aggregata; lamina crasse coriacea obovato-oblonga vel 
suboblonga cire. 4.5 cm. longa 1.5 cm. lata, apice rotundata . 
mucronata, margine subcartilaginea cbscure undulata, basi ob- 
tusa vel cuneata saepe inaequalis; supra pallide viridis opaca 
primo squamis imbricatis dense lepidota, squamis demum plus 
minusve detersilibus, costa media sulcata sparsim puberula ; sub- 
tus albo-grisea papillis epidermicis ceriferis tecta et squamis 
nigricantibus discontiguis (in quoque mm. quadr. circ. 3) vestita, 
costa media elevata lepidota, venis primariis utrinsecus ad 10 
prominulis et lepidotis ; petiolus ad 1 cm. longus ut rami vestitus 
saepe squamis subverruculosus. Flores in umbellas 4(?)-floras 
terminales; pedicelli vix 2 cm. longi lepidoti. Calyx ad 7 mm. 
