244 BALFOUR—RHODODENDRON : 
The alliance of this species is with Rh. hypolepidotum, Balf. £. 
et Forrest, a Mekong-Salween species recognisable at sight by 
the absence of the grey-white underleaf coloration which is prom- 
inent in Rh. charitopes. 
Rhododendron charitostreptum, Balf. f. et Ward. 
Suffrutex aromaticus nanus’ rupicola dense aggregatus. 
Rami perulati, annotini circ. 2 mm. diam. squamis furfuracei. 
Folia petiolata ad 5.5 cm. longa; lamina coriacea obovalis ad 4.8 
em. longa 2.5 cm. lata, apice rotundata nunc retusa mucrone 
tuberculato terminata, margine subcartilaginea vix recurva ob- 
scure undulata, basi attenuata; supra subnitida purpureo- 
brunnea squamis marcidis adpressis sigilliformibus plus minusve 
induta, costa media sulcata erubescente glabra, venis primariis 
suboccultis ; subtus griseo-alba papillis epidermicis ceriferis tecta 
granulosim punctulatimque lepidota, squamis magnis distantibus 
nigris paucis, squamis parvis et squamis intermediis disconti- 
guis (in quoque mm. quadr. circ. 12) subaequaliter intermixtis 
flavido-albidis, costa media erubescente elevata sparsim lepid- 
ota, venis primariis pinnatim prominulis utrinsecus 8-10; peti- 
olus ad 7 mm. longus ut rami vestitus. Umbellae terminales 
brevissime racemosae ad 5-florae, rhachi grosse_ lepidota; 
bracteae et bracteolae mox deciduae; pedicelli tenues erecti ad 
2 cm. longi dense verruculosim lepidoti et squamis stipitatis ves- 
titi sub calyce incrassati et densius lepidoti. Calyx conspicuus 
ad 6.5 mm. longus 5-partitus; lobi subcoriacei ovati vel late 
ovati obtusi vel subacuti extus dense lepidoti circ. 5 mm. longi 
4 mm. lati. Corolla parva citrina emaculata subrotata ad Ts 
em. longa extus lepidota; tubus latus basi circ. 3 mm. diam. § 
mm. longus intus puberulus; limbus patens parte basali integra 
circ. 3 mm. longa intus subvillosa ; lobi 5 saepe reflexi rotundati 
integri circ. 5 mm. longi 7 mm. lati. Stamina 10 inaequalia 
corollam vix aequantia; longiora circ. 1.2 mm. longa filamentis 
tenuibus basi glabris et sursum intra tubum corollinum puberu- 
7 mm. longus paullo deflexus; stigma latum lobulatum. Species 
Seriei Campylogyni, phyli Rh. brachyanthi. 
“N.E. Upper Burma. Imaw Bum. Alt. 11-12,000 ft. 
amongst the granite rocks on S.-facing slopes. Very common. 
Thickets a foot deep. Flowers lovely lemon-yellow with 
