264 BALFOUR—-RHODODENDRON : 
minales dispositi; bracteae mox deciduae; bracteolae lineares 
superne paullo dilatatae circ. 1.3 cm. longae a basi pilosae sup- 
erne dorso lepidotae pilo-cristatae; pedicelli atropurpurei ad 2 
cm. longi sub calyce expansi glabri nunc squamis paucis praediti. 
Calyx carnosulus cupuliformis vix 1 mm. longus extus lepido- 
tus margine undulatus et submembranaceus epilosus nunc 
squamoso-fimbriatus. Corolla campanulata zygomorpha_ vio- 
laceo-rosea maculata cire. 3 cm. longa extus glabra intus puber- 
ula; tubus latus brevis dorso extus bisulcatus basi postice sub- 
ventricosus sursum in limbum ampliatum patentem 5-lobum 
ampliatus fauce lata; lobi ovales circ. 2 cm. longi 1.5 cm. lati. 
Stamina IO inaequalia, longiora ad 3.5 cm. longa exserta, 
brevissimum (posticum) 1.5 cm.; filamenta deorsum dilatata 
supra basim nudam villosa. Discus sub ovario dense puberulus. 
Gynaeceum ad 4 cm. longum stylo longe exserto; ovarium par- 
vum circ. 3 mm. longum conoideum truncatum dense lepidotum ; 
stylus glaber sub stigmate discoideo lobulato recurvo vix expan- 
sus. Species Seriei Triflori. | 
Mid Western Yunnan. Tali Range. Western flank. Lat. 
25° 4o’ N. Alt. 10,000 ft. Open thickets. Shrub of 4-8 ft. 
Flowers lilac rose. [Only a fragment available. The chief 
specimens were sunk in the Indian Ocean in a ship torpedoed by 
the Germans.| Forrest 15,576. June 1917. 
[Under numbers 15,581, 15,586, 15,887, 15,625—none with 
precise locality—-we have fragmentary dried samples of speci- 
mens also torpedoed which are probably this Rh. hesperium]. 
A species of the phylum of Rh. chasmanthum, Diels, and Rh. 
chasmanthoides, Balf. f. et Forrest. The southern form of the 
type. Distinguished from Rh. chasmanthoides by its smaller 
features usually ; branchlets epilose, leaves half the size, cuneate 
or narrowly obtuse base, esquamate upper surface, glabrous 
midrib above, smaller scales on under surface, its midrib quite 
epilose and elepidote, petiole glabrous underneath lepidote above 
quite epilose; fragrant flowers, pedicels usually elepidote; calyx 
barely 1 mm. long never hair-ciliate; corolla smaller never lepi- 
dote outside, puberulous inside. 
Differences from Rh. chasmanthum I shall record elsewhere 
where I describe this species. Diels’ account of it is insufficient. 
1\ Rhododendron horaeum, Balf. f. et Forrest. 
Frutex perulatus foliis parvis dense rosulatim aggregatis. 
Rami hornotini circ. 1.5 mm. diam. indumento albo e pilis floc- 
cosis multo et longe ramosis stratum unum fingentibus induti. 
Alabastrorum perulae persistentes, interiores membranaceae 
primo fulvae demum brunneae ligulatae carinatae acutae margine 
- sebaceo-pilosae circ. 1.5 cm. longae 2.5 mm. latae. Folia petio- 
