302 BALFOUR—RHODODENDRON : 
W. Yunnan. E. flank of the N’ Maikha-Salween divide. 12- 
13,000 ft. Forrest 18,000. May 1919. 
A very distinct species. Narrow linear leaves setulase on 
margin only, upper and under surfaces smooth, hairless saye for 
upper midrib where the hairs are vestigial—but very prominent 
in just expanding leaf. The margin is somewhat erose an 
prickly from the hairs and their bases. Here and there one 
larger than the others within the actual margin above. The 
scales are not sunk. The umbels in loose or dense fascicles. 
Calyx lepidote only outside and prominently bristly on margin. 
Small calyx. 
Rhododendron tephropeplum, Balf. f. et Farrer. 
_Frutex parvus. Rami saepe stricti virgati erubescentes dis- 
contigue lepidoti, annotini circ. 2 mm. diam., vetustiores ver- 
ruculosi. Folia petiolata ad 0.5 cm. longa; fasiina crasse cori- 
acea rigida lanceolata vel anguste oblonga vel oblongo-lanceolata 
vel oblanceolata ad 6 cm. longa vix 2 cm. lata, apice obtusa nunc 
subacuta mucrone prominulo rubro terminata, margine straminea 
paullo recurva obscure undulata, basi cuneata vel obtusa ; supra. 
pallide olivacea squamis scintillantibus demum plus minusve 
nigricantibus discontiguis (in quoque mm. quadr. circ. 6) induta, 
costa media sulcata glabra, venis primariis occultis; subtus fere 
nigro-cinerea papillis epidermicis ceriferis cinereis tecta et 
squamis uniformibus nigricantibus discontiguis (in quoque mm. 
quadr. circ. 12) vestita, costa media straminea vel erubescente 
elevata nigro-lepidota, venis caeteris occultis; petiolus circ. 5 
mm. longus dense nigro-lepidotus. Umbellae terminales ad 5- 
florae ; bracteae deciduae ; bracteolae circ. 1 em. longae filiformes 
a basi pilosae pilo-cristatae ; pedicelli validi cire. 1 cm. longi 
erecti stricti purpurei squamis  aurantiaco-scintillantibus 
dense vestiti. Calyx subfoliaceus 5-partitus ad 8 mm, longus; 
cupula dense lepidota; lobi submembranacei ovales vel retundati 
pallide virides vel rubri plus minusve cero-glauci extus squamis 
scintillantibus lepidoti nunc fere elepidoti, margine squami- 
ciliati et in lobos rubros nunc minute eroso-denticulati setisque 
sparsis ornati. Corolla late infundibuliformis ad 2.5 cm. longa 
kermesino-rosea ; tubus intensius coloratus latus basi circ. 4 mm. 
diam. intus extusque glaber superne ampliatus basi calyce 
patente cinctus; lobi 5 tubum aequantes lati rotundati circ. 1.2 
em. diam. profunde emarginati. Stamina 10 inaequalia corolla 
breviora, longiora circ. 2.3 cm. lomga, breviora circ. 1.5 cm.; 
filamenta subcarnosula infra medium fere ad basim puberula; 
antherae parvulae circ. 1 mm. diam. profunde bilobae. Discus 
dense puberulus. Gynaeceum corollam aequans vel ea paullo 
jongius; ovarium 4 mm. longum conoideum profunde sulcatum 
