DIAGNOSES SPECIERUM NOVARUM. 229 
and of Rh. brachyandrum, Balf. f. et Forrest. The variation in 
flower colour described by Mr Farrer is remarkable and should 
make the plant a useful one in Horticulture. 
ur" Rhododendron aischropeplum, Balf. f. et Forrest. 
Frutex fere 2 m. altus. Rami crassi ex incrementis annuis 
brevissimis aedificati foliis apicem versus congestis et perulis 
praeteritis marcidis dense vestiti, seniores nigricantes. Alabas- 
tra anguste ovoidea acuta haud glutinosa; perulae exteriores 
haud lanatae extimae sublignosae a basi latiore acuminatae car- 
inatae subtomentosae, interiores ovatae mucronatae dorso subto- 
mentosae eglandulosae ciliatae, intimae ligulato-spathulatae ad 
2.5 cm. longae 6 mm. latae acutae ciliatae. Folia ad 10 cm. 
longa petiolata; lamina crasse coriacea rigida lanceolata acum- 
jnata mucrone tuberculato prominulo erecto terminata, margine 
recurva, deorsum in petiolum latum brevem gradatim angustata ; 
supra opaca olivacea demum saepe purpurascens in modum squali 
corii rugulosa pilis rufis detersilibus plus minusve praedita glab- 
rescens, costa media sulcata dense rufo-pilosa, venis primariis 
utrinsecus ad 12 inconspicuis ; subtus sordide flavida ex toto in- 
dumento persistente denso crasso bistrato induta, strati superi 
pilis longe ramosissimis fibrilliformibus intertextis leviter col- 
oratis, strati inferi e rosulis laxe dispositis incoloratis ramisque 
vesiculosis brevibus compositis, costa media elevata; petiolus 
complanatus circ. 4 mm. latus 5 mm. longus dense  lanatus. 
Flores in racemo-umbellas compactas parvas plurifloras dis- 
positi, rhachi pubescente; bracteae persistentes exteriores 
rotundatae mucronatae extus rufo-tomentosae, interiores ob- 
longo-ovales membranaceae apice rotundatae ; bracteolae minutae 
filiformes circ. 5 mm. longae pilosae; pedicelli vix 1 cm. longi 
rufo-pilosi et dense glandulosi sub calyce expansi. Calyx 
alba kermesino-maculata varo postico magno pallido notata extus 
glabra intus puberula basi gibbosa ; lobi 5 rotundati circ. I cm. 
longi 1.5 cm. lati. Stamina 10 circum stylum aggregata in- 
aequalia corolla et gynaeceo breviora, longiora circ. 1.8 cm. longa, 
breviora 1 cm.; filamenta puberula. Discus glaber. Gynaeceum 
circ. 2.2 cm. longum; ovarium cire. 2 mm. longum conoideum 
truncatum sulcatum dense glandulosum apice paullo pilo- 
cristatum ; stylus validus sub stigmate lobulato hand incrassatus. 
Species Seriei Roxieani. 
Western N.W. Yunnan. Mekong-Salween divide. Lat. 28° 
20' N. 12-13,000 ft Open rocky moorland and on the margins 
of pine forests. Shrub of 4-6 ft. Flowers white, occasionally 
flushed rose with deep crimson markings. Forrest 14,061. 
June 1917. 
