262 BALFOUR—RHODODENDRON : 
lus ad 2 cm. longus in juventute dense setuloso-glandulosus 
maturitate rugulosus glabrescens nunc vestigialiter notatus. 
Umbella ad 6-flora; pedicelli 1 cm. longi nunc paullo longiores 
virides glandulis breviter (et paucis longius) stipitatis induti 
sub calyce incrassati. Calyx ad 6mm. longus; cupula kermesina 
glandulosa ; lobi 5 membranacei flavidi inaequales, posticus major 
ad 5 mm. longus 2 mm. latus oblongi vel elliptici obtusi margine 
glandulosi. Corolla pallide rosea fere alba infundibuliformi- 
campanulata ad 4-4.5 cm. longa; lobi lati emarginati. Stamina 
10 inaequalia, longiora circ. 2.5 cm. longa breviora 1.5 cm. 
corolla gynaeceoque breviora; filamenta puberula. Discus 
puberulus. Gynaeceum corolla paullo brevius staminibus 
longius circ. 3 em. longum; ovarium elongatum circ. 5 mm. 
longum sulcatum ad juga breviter stipitato-glandulosum ; stylus 
glaber sub stigmate lobulato ipso haud latiore paullo expansus. 
Species Seriei Selensis, 
Mid Western Yunnan. Tali range. Western flank. Lat. 
25° 40! N. Alt. 11,000 ft. Rocky open slopes. Shrub of 4-5 
ft. Flowers pale rose, almost white. Forrest "No. 11,601. 
June 1913. 
To here also should be assigned I believe the specimens under 
Nos 4148 and 4154 which have ee oe been referred to Rh. 
jucundum, Balf. f. et W. W. 
A beautiful plant Metbaley’ to the set of the Selense Series 
in which the leaves are rounded with marked cordate base. 
When describing Rh. jucundum (in Notes R.B.G. Edin. ix 
(1916) 242) I wrote of this plant from the Western flank of the 
Tali range as probably a new species. Now that I have obtained 
more knowledge of the plants of the Selense Series I confirm 
the differentiation from Rh. jucundum which is one of the series 
with oblong leaves and has besides more flowers in the umbel, 
longer thinner pedicels clad with few long setulose aa 
hairs. 
uc? Rhododendron helvolum, Balf. f. et Forrest. 
Frutex ad 2.5 m. altus. Rami subcrassi, annotini circ. 4 mm. 
diam. indumento cinereo tenui e pilis rosulatis intertextis com- 
posito vestiti, seniores nigrescentes mycelio fungorum indumen- 
tum ubique penetrante. Alabastra ovoidea sursum attenuata 
pallide brunnea; perulae imbricatae, extimae crustaceae rotun- 
datae carinatae apiculatae extus griseo-tomentosae. Folia petio- 
lata ad 11.5 cm. longa; lamina coriacea oblonga ad 10.5 cm. longa 
3-5 cm. lata, sursum apicem versus paullo attenuata acuta vel 
rostratim acuta mucrone conspicuo terminata, margine plana, 
basi late obtusa nunc fere rotundata ; supra purpureo-viridis sub- 
itens fere laevis costa pares sulcata puberula, venis primarits 
