BOO 
DIAGNOSES SPECIERUM NovVARUM. 289 
Western N.W. Yunnan: Mekong-Salween divide. - Lat. 28° 
12'N. Alt. 12,000 ft. Open thickets and pine forests. Shrub 
of 4-8 ft. Flowers white without markings, occasionally faintly 
margined rose. Forrest No. 14.227, July 1917. 
A species of the Selense Series from the Mekong-Salween 
divide having its nearest ally in Rh. nanothamnum, Balf. f. et 
Forrest from the Salween—Kiu-chiang divide. Its promise to be 
a good plant in cultivation is as good as that given by Rh. nano- 
thamnum from which it differs in the glandular young stems, 
oval leaves with trunculate base, glandular pedicels, larger | 
flowers and without 
a basal biotch. 
df po Rhododendron pubigerum, Balf. f. et Forrest. 
Frutex ad 1 m. altus. Ramuli annotini rubescentes ad 2 mm. 
diam. puberuli sparsim lepidoti. Perulae intimae alabastrorum 
membranaceae sublanceolatae longe ciliatae dorso lepidotae et 
puberulae. Folia petiolata ad 7 cm. longa; lamina chartacea 
ovalis ad 6 cm. longa 3 cm. lata, apice rotundata mucrone tuber- 
culato conspicuo terminata, margine plana, basi rotundata vel 
subcordulata; supra elivices opaca reticulata venis ultimis reti- 
culi (sicco) prominulis — sulcatis elepidota, costa media 
paullo sulcata erubescente puberula, venis primariis paullo 
elevatis utrinsecus circ. 8 pinnatim patulis; subtus cer- 
vina purpureo-tincta squamis discontiguis rubiginosis dense 
vestita, intervallis ~viridibus diametro squamarum  sub- 
aequalibus squamis (in quoque mm. quad. circ. 8-10) 
pezizaeformibus uniformibus secretione intense ferruginea infil- 
tratis, umbonis lati concavi institaeque. angustae superficie 
plus minusve cerifera subglauca, costa media elevata erubescente 
glabra, venis primariis occultis; petiolus circ. 1 cm. longus sul- 
catus ut ramuli vestitus. Flores in umbellas terminales 4-floras 
dispositi; bracteae bracteolaeque mox deciduae; pedicelli ad 1.5 
em. longi glauco-purpurei plus minusve lepidoti sub flore obliquo 
dilatati. Calyx cupuliformis parvus vix 1.5 mm. _ longus 
extus lepidotus 5-lobus ; lobi rotundati cupulam paullo excedentes. 
Corolla pallide roseo-lavandulacea copiose kermesino-maculata 
cire 2.5 cm. longa campanulata subzygomorpha intus puberula ; 
limbus 5-lobus ampliatus late expansus ; lobi ovales circ. 1.5 cm. 
longi 1 cm. lati. Stamina ro inaequalia, longiora corollam sub- 
aequantia antheris ovoideis circ. 2.5 mm. longis, breviora circ. 
1.3 cm. longa antheris globosis circ. 1 mm. diam. ; filamenta car- 
nosula deorsum vix dilatata basim versus puberula. Discus 
puberulus. Gynaeceum corollam subaequans vel ea paulio 
longum ; stylus glaber sub stigmate lobulato expansus, Beenie: 
Seriei Triflori, phyli Rh. oreotrephis. 
