82 BALFOUR—NEW SPECIES OF RHODODENDRON. 
phylogeny will unite them all in one larger group. For another 
occasion must be reserved an account of the evidence for this, 
and of the delimitation of the larger group to which reference 
is made. Here may be put on record that. merely slight differ- 
species. We have already learned that in Rh. haematodes, a 
plant of the Tali Range at an elevation of I1,000-12,000 ft. 
in about lat. 25° 40’ N., an upper stratum of under-leaf indu- 
mentum forms a well-developed persistent woolly layer. We 
have the same in Rh. farinosum, Léveillé, a species from Eastern 
Yunnan at an elevation of about 10,000 ft., and doubtless 
these are representative of other species yet to be discovered. 
This upper indumentum layer becomes normally deciduous in 
Rh. euchroum, Balf..f. et Ward, a spreading procumbent shrub 
of the Nwai divide in E. Upper Burma at 10,000 ft. elevation ; in 
the Eastern Szechwan species Rh. detersile, Franch. ; and in the 
several plants from the Mekong-Salween divide in lat. 28° 12’ N. 
at 10,000-13,000 ft. elevation, from the Mekong- Yangtze divide 
in lat. 27° 36’ N. at 13,000 ft.-elevation,-and from the 
Chungtien plateau in lat. 27° 40’ N. at 13,000 ft. elevation, 
which in default of better knowledge are for the moment 
associated under the name Rh. floccigerum, Franch. 
he small group to which reference is made on p. 123 as the 
Forrestii series has many characters in common with the plants 
of which I have been speaking, and possibly the best expression 
of affinity may be that which includes these Forrestii forms with 
the Sanguineums and the other species named in one group. 
U%OS Basnerodren leptopeplum,* Balf. f. et Forrest.+ 
b 6-9 m. high with medium thick branches, the branches 
a von old densely glandular and shortly floccose the glands 
* Jentoc, pres: néxioc, covering—in allusion to the smooth indumentum 
of leaf under surfac 
+ Rhododendron reer Balf. f. et Forrest.—Frutex ad 9 m. altus 
ramis glandulosis et breviter floccosis. Folia ad 16.5 cm. longa; lamina chartacea 
12-floram dispositi; bracteae dense pubescentes ; bracteolae lineares pedicellis 
breviores ; pedicelli circ. 1.5 em. longi glandulosi. Calyx membranaceus 5-lobus, 
glandulosus. Corolla campanulata flavido-alba roseo-suffusa kermesino-maculata 
et variculosa ad 4 cm. longa, extus intusque glabra, 5-loba; lobi ad 2.4 cm. a 
Stamina 10 inaequalia corolla gynaeceoque breviora ; filamenta puberula. 
puberulus. Gynaeceum ad 3.8 cm. longum ; ovarium circ. 4 mm. longum csibiao- 
truncatum dense glandulosum et puberulum, pilis simplicibus ; stylus glaber. 
