272 BAaLFOUR—RHODODENDRON : 
1.2 cm. longi 1.5 cm. lati. Stamina ro longiora circ. 3.2 cm- 
longa; filamenta puberula. Discus glaber. Gynaeceum circ. 
3.7 cm. longum; ovarium circ. 6 mm. longum truncatum pilis 
fasciatis curvatis siccis dense tomentosum ; stylus validus nudus ; 
stigma parvum. 
Western Yunnan. Shweli-Salween divide. Towards the 
summit of Jangtzow Shan. Lat. 25° 10’ N. On cliffs and 
bouldery slopes. Shrub of 2%-3% ft.. Flowers including calyx 
deep rose flushed orange margins to purplish rose at apex 
especially in bud. Forrest No. 18,167. June roro. 
One of the Sanguineum Series of Rhododendrons and of that 
series which has the squat tomentose truncate ovary. It is an 
eglandular form. Its features reflect strongly its habitat. One 
recognises it at once as a plant of exposed windy and probably 
sunny situations—a fully equipped xerophyte. It has also a 
mycophyllon well-developed—every leaf is one—but dissection 
shows the true indumental hairs embedded in the black fungal 
mycelium. 
W © Rhododendron lampropeplum, Balf. f. et Forrest. 
Frutex vix 1 m. altus. Rami subcrassi circ. 4 mm. diam. 
incrementa annua brevissima exhibentes indumento rufo-lanato 
persistente induti per annos 3-4 perulati postea nudi. Alabastra 
oblonga circ. 1.2 cm. longa; perulae exteriores coriaceae vel sub- 
lignosae a basi sublanceolatae vel anguste ovatae dein ovatae car- 
inatae mucronulatae plus minusve rufo-tomentosae et ciliatae 
glandulis rubris etiam dorso conspersae, intimae membranaceae 
ligulatae acutae circ. 1.5 cm. longae 2 mm. latae. Folia petio- 
lata concava ad 4.5 cm. longa; lamina crasse coriacea rigida ob- 
longa vel oblongo-ovalis vel obovalis apice obtusa mucrone tuber- 
culato recurvo inconspicuo, margine recurva, basi subrotundata ; 
supra laete viridis opaca in modum squali corii rugulosa glabres- 
cens pilis vestigialibus rufis hic et illic notata (costa media pilis 
impleta excepta) venis primariis utrinsecus circ. 8 vix impressis ; 
subtus subcoccineo-rubra indumento lanato bistrato persistente 
ex toto obtecta, strati superi pilis coloratis longi-ramosis com- 
-planatis intertextis superficiem sublaxam exhibentibus, strati in- 
feri rosulatis paucioribus ecoloratis breviter ramosis in pelliculam 
haud agglutinatis, costa media basi et ultra plus minusve elevata ; 
petiolus circ. 8 mm. longus 2 mm. latus ut rami vestitus. Gem- 
mae florales globosae magnae.. Flores in umbellas plurifloras 
parvas compactas dispositi; bracteae intimae obovato-spathulatae 
dorso albido-sericeae margine rufo-ciliatae ; bracteolae filiformes 
circ. 6 mm. longae pilosae et pilis albidis cristatae ; pedicelli circ. 
_ I cm. longi haud expansi tentiter pubescentes eglandulosi. 
Calyx parvus circ. 1.5 mm. longus carnosulus in lobos 5 del- 
