100 BALFOUR—NEW SPECIES OF RHODODENDRON, 
Shrub of pany a Flowers probably rose. G. Forrest. No. 
10,430. July 
This fine nants is s of special interest, cas whilst resembling 
in many characters the rhododendrons of the series that centre 
around Rh. selense, Franch., it differs from them in its character 
of glandular style, which takes it nearer those of the Souliei 
series, from which series it is excluded by the shape of its corolla. 
Its nearest ally is certainly Rh. rhaibocarpum, Balf. f. et W. W. 
Sm. They are members of a complex of which Mr. Forrest has 
collected other members, but not in complete enough state to 
supply material for estimation of their relationship and title to 
specific rank. The special attention he will give to that group 
during his present exploration of Yunnan will furnish data, I 
hope, which will show us more than one new species in this 
beautiful set of rhododendrons. 
Rhododendron diaprepes, Balf. f. et W. W. Sm. 
Frutex ad 3 m. altus. Ramuli annotini glaberrimi crassi 
circ. 7 mm. diam. recti virides nitentes. Alabastra terminalia 
ignota. Folia petiolata ad 22 cm. longa; lamina coriacea 
elliptico-oblonga ad Ig cm. longa 8 cm. lata apice rotundata 
mucronata margine cartilaginea basi plerumque obliqua lobis 
subrotundatis nunc subauriculatis subdecurrentibus, supra 
glaberrima subnitenti-viridis costa media parum sulcata venis 
primariis utrinsecus ad 22 et nervulorum reticulo (in sicco) 
paullo elevatis, subtus pallidior sublutescens vel glaucescens 
papillis ceriferis epidermicis petasiformibus ex toto obtecta et 
glandulis rubris sebaceis punctulata costa media straminea 
_elevata venis primariis paullo prominulis reticulo ultimo ob- 
scurato ; petiolus circ. 3 cm. longus viridis glaber subnitens. 
Flores fragrantes magni inter se distantes in umbellam breviter 
racemosam ad 7-floram terminalem dispositi inflorescentiae rhachi 
vix 1.5 cm. longa plus minusve rubro-glandulosa; bracteae 
ignotae ; bracteolae parvae lineari-subulatae circ. 5 mm. longae 
albido-hirsutae ; pedicelli circ. 3.5 cm. longi crassi stricti epilosi 
rubro-glandulosi glandulis parvulis brevissime stipitatis nunc 
glabrescentes superne in calycis cupulam oblique dilatati. 
Calycis plus minusve rubro-glandulosi cupula brevis in limbum 
circ. 5 mm. longum tenuiter coriaceum inaequaliter et irregu- 
lariter lobulatum expansa, lobis integris vel laceratis et margine 
plus minusve ciliatis vel glandulosis. Corolla alba extus roseo- 
suffusa circ. 10.5 cm. longa e tubo infundibuliformi in limbum 
tubatum 7-lobatum explanata, tubo extus epiloso eglanduloso 
intus pubescente, lobis rotundatis emarginatis nunc subcrenu- 
lato-undulatis circ. 3 cm. longis 4 cm. latis. Stamina ad 18 
inaequalia longiora circ. 7.5 cm. breviora circ. 5 cm., filamentis 
