238 BaLFOUR—RHODODENDRON : 
foliage and flowers are coaetaneous and the leaves appear to be 
deciduous at the end of the season and the hairy covering is coti- 
posed of curling woolly hairs. The membranous calyx-lobes are 
deciduous often early and vary in degree of their setulose-cilia- 
tion. It is quite a distinct plant in the Series. 
Rhododendron caloxanthum, Balf. f. et Farrer. 
Frutex circ. 1 m. altus paucifolius. Rami annotini circ. 2 mm. 
diam. rubro-glandulosi glandulis breviter stipitatis, vetustiores 
albidi. Alabastra ovoidea ; perulae extimae longe caudatae dense 
rubro-glandulosae. Folia longe petiolata ad. 10 cm. longa pauca 
in rosulis ad apicem ramulorum disposita; lamina coriacea ellip- 
tica vel suborbicularis ad 6.5 cm. longa 5 cm. lata, mucrone paullo 
rostrato terminata, basi cordulata ; supra olivacea vel atro-violacea 
vel purpureo-brunnea glabra, costa media angusta paullo sulcata 
erubescente, venis primariis utrinsecus ad 10 paullo sulcatis; 
subtus primo pallide viridis demum cervina glandulis rubris 
punctulata et pilis sebaceis aurantiacis numerosis praedita, costa 
media paullo elevata ; petiolus 2.5 cm. vel ultra longus plus minus- 
ve migitate-dlaiduloans: Umbella 4-6-flora ; pili in axillis brac- 
tearum coccinei; bracteolae filiformes circ. 6 mm. longae basi 
glabrae sursum pilosae et glandulosae; pedicelli circ. 1.5 cm. 
longi dense stipitato-glandulosi sub calyce incrassati. Calyx 
parvus carnosulus atro-kermesinus dense glandulosus circ. 5 mm. 
Jongus 5-dentatus; lobi cupulam aequantes. Corolla citrina‘ a 
basi campanulata cire. 3 cm. longa glabra; lobi 5 breves et lati 
cire. 8 mm. longi 2 cm. lati. Stamina 10 inaequalia, longiora 
corollam subaequantia, breviora circ. 2 cm. longa; filamenta 
glabra. Discus glaber. Gynaeceum corollam ae sub- 
aequans ; ovarium tenue circ. 5 mm. longum sulcatum truncatum 
glandulis plurimis stipitatis vestitum; stylus fere ad medium 
glandulosus ; stigma lobulatum stylo paullo latius. 
N.E. Upper Burma. Chimili (and Hpimaw). Alt. 11-12,000 
ft. A little bush of four feet. Buds vermilion as they open 
flushed with apricot and tipped with orange-scarlet. Fully de- 
veloped flowers of clear citron yellow very attractive. High al- 
pine scrub along the edges of both Hpimaw and Chimili Passes, 
just coming into bloom on May 18. Farrer No. 937. May 18, 
1919. . 
_N.E. Upper Burma. Chawchi Pass, etc.- Alt. 12,000 ft. 
Probably = Farrer 937. Satan ylacsepust Series. Here it is 
even more abundant and a smaller bush, more free-flowering, 
covering the open slopes and precipice-ledges i in dense masses of 
2-3 ft. jungle. Covered with dense masses of pale 
ss (iced aloe, Se blossom in exactly the same tone as the here 
nt form of Rh. eclectewm, a thousand feet lower. Farrer 
a 
