age’ 
268 BALFOUR—RHODODENDRON : 
28° 4o’ N. Long. 989 15’ E. Shrub of 1-2 ft. Amongst rocks 
in ravines. Forrest No. 19,207. July roro. 
S.E. Tibet. Tsarong. Salween-Kiu-chiang divide. Lat. 28° 
40’ N. Long. 98° 15’ E. Shrub of 3-5 ft. On open alpine 
meadows. Forrest No. 19,216. Aug. 19109. 
N.E. Upper Burma. Chawchi Pass. Alt. 10-11,000 ft. A 
little thin bush of 15-24 inches. Epiphytic in the upper alpine 
woodiand. Flowers white fairly pretty and sweet. Plant 
strongly aromatic. Flowering season mid-July. Farrer No. 
1668. 
Franchet separated from Delavay’s Tali plant—Rh. brachyan- 
thum, Franch.—this Mekong-Salween plant of Soulié as a variety 
under the name of var. hypolepidotum. ‘The two plants differ 
more than is conveyed by this degree-of segregation and here we 
read for Rh. hypolepidotum a definite specific position :—a 
coarser plant in vegetative features it is, with larger and stiffer 
leaves. The covering of discontiguous scales of ‘the under sur- 
face is present in both but in Rh. brachvanthum the scales are but 
2-3 in a square millimeter, in Rh. hypolepidotum as many as 6-7. 
The fiower characters though much alike differ in small points 
such,as—the calyx is not so grey with wax, the stamens are much 
thinner and more villous, the style is shorter than stamens. 
Rhododendron hypotrichotum, Balf. f. et Forrest. 
Frutex ad 1 m. altus. Ramuli tenues hornotini cire. 1 mm. 
diam. pilis minutis erectis dense puberuli elepidoti vel rarissime 
Squamas sparsas exhibentes, annotini circ. 2mm. diam. indumento 
simili vestiti. Folia petiolata ad 5.5 cm. longa aromatica; lam- 
ina papyracea anguste oblongo-ovalis a basi latiore sursum grad- 
atim attenuata ad 4.5 cm. longa 2 cm. lata, ad apicem acutum 
angustata mucrone rubro tuberculato terminata, margine paullo 
recurva, basi rotundata; supra opaca atro-olivacea subreticulata 
elepidota, costa media demum erubescente puberula, venis pri- 
mariis utrinsecus circ. 8 pinnatim adscentibus paullo elevatis; 
subtus pallide viridis remote lepidota, intervallis laete viridibus 
diametrum squamarum superantibus squamis impressis disci- 
formibus discontiguis (in quoque mm. quad. 3-4) rubiginosis in- 
stita fere nulla, costa media farina rubra deinde flavida basim 
versus puberula, venis primariis occultis; petiolus circ. 1 cm. 
longus rubidus sulcatus ut ramuli vestitus. Flores in umbellas 
4-floras terminales dispositi, bracteae bracteolaeque mox decid- 
uae ; pedicelli ad 1.2 cm. longi glabri sub calyce dilatati. Calyx 
parvus cupuliformis ad 1.5 mm. longus 5-lobus; cupula glabra 
_ vel squamis sparsis nunc praedita ; lobi rotundati vel semilunati 
margine dense regulariter squamo-cincti. Corolla lavandulaceo- 
_ Fosea maculis paucis ornata ad 3 cm. longa campanulata extus 
