266 BALFOUR—RHODODENDRON : 
erubescente vix sulcata, venis primariis utrinsecus circ. 15 v1Xx 
visis ; subtus pallidior flavido-viridis, costa media prominula 
erubescente glabra, venis primariis albidis paullo sulcatis, 
reticulo-venularum ultimarum intricato elevato, papillis epider- 
micis ceriferis cubicalibus petasiformibus latis humilibus; peti- 
olus purpureus subglaucus circ. 1.5 cm. longus glaber. Flores 
in racemo-umbellam dispositi 10-12 in quaque inflorescentia, 
rhachi cire. 2 cm. longa puberula; bracteae interiores oblongo- 
obovatae truncatae apiculatae circ. 3 cm. longae 1 cm. latae dense 
albo-sericeae ; bracteolae filiformes circ. 1.5 cm. longae a basi 
pilosae et pilo-cristatae; pedicelli circ. 1 cm. longi glauco- 
purpurei glaberrimi. Calyx cupularis membranaceus ochraceus 
cire. 5 mm. longus undulatim 5-lobatus glaber sed margine ob- 
seure denticulato-pilosus primo erectus demum deflexus per- 
sistens. Corolla pallide rosea kermesino-maculata tubuloso- 
campanulata 4.5 cm. longa extus intusque glabra basi septis in- 
completis notata et 5-gibbosa sacculis atro-kermesinis; lobi 5 
profunde emarginati 1.5 cm. longi 2.5 cm. lati. Stamina 1o in- 
aequalia, longiora tubum corollae aequantia; filamenta glabra. 
Diseus glaber. Gynaeceum corolla paullo brevius; ovarium 
petasiforme circ. 5 mm. longum vix sulcatum truncatum laeve 
glaberrimum; stylus glaber; stigma lobulatum stylo paullo 
latius. Species Seriei Irrorati. 
N.E. Upper Burma. Chawchi Pass. Alt: 10,500 ft. A tidy 
round-headed tree of 20-40 ft. with trunk remarkably smooth 
and bare and bald (see branchlets). Flowers so far gone by May 
15 (though snow was all about) that only after long search were 
specimens obtained. They are scentless, pink and handsome, 
spotted rather carelessly on all the lobes. This develops the bole 
of a forest tree, twisting and sprawling like limbs of an elephant. 
Farrer No. 1551. May 15, 1920. Irroratum Series ? 
Mr Farrer was correct in his placement of this species in the 
Irroratum Series—a series that includes many of the species of 
N.E. Upper Burma. ‘This is a particularly large tree remark- 
ably glabrous. 
at ‘Rhododendron hypolepidotum, Balf. f. et Forrest. 
Rh. brachyanthum be Suan ae cn Franch. in Journ, de 
Bot. xii (1898) 2 
Frutex ad 1.5 m. a Rami juveniles erubescentes lepi- 
doti ad 1.5 mm. diam. Folia aromatica petiolata variabilia ad 
7-5 cm. longa nunc vix 3 cm. ad apicem ramorum rosulatim ag- 
gregata ; lamina subcoriacea oblongo-obovata ad 6. 5 cm. longa 2.5 
cm. lata vel minor, apice rotundata prominenter mucronata, mar- 
gine ‘subcartilaginea obscure crenulato-undulata, basi obtusa; 
supra pallide olivacea opaca squamis albidis enna (in 
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