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DIAGNOSES SPECIERUM NOVARUM. 261 
longa 4. cm. lata plerumque brevior, apice rotundata vel late 
obtusa rostrato-mucronata, margine plana, basi cordulata ; supra 
glabra purpurascens, costa media paullo sulcata ad teditim 
flava, venis primariis utrinsecus ad 12 paullo prominulis ; subtus 
primo glauca demum purpurascens pilorum juvenilium vestigiis 
notata, costa media elevata conspicue straminea rugam basi pin- 
m sursum mox attenuatam fingente, venis primariis vix visis ; 
petiolus saepe brevis circ. 1.5 cm. longus nunc longior primo 
flavus dein purpurascens obscure glandulosus. Flores in um- 
bellam veram circ. 8-floram dispositi; pedicelli ad 5 cm. longi 
validi dense glandulosi glandulis subsessilibus. Calyx foliaceus 
ad 1 cm. longus fere ad basim subinaequaliter 5-partitus ; cupula 
atro-kermesina; lobi flavidi submembranacei glanduloso-ciliati 
dorso glabri vel rarius glandulis conspersi. Corolla magna circ. 
7 cm. diam. flava aperte campanulata 4 cm. longa; lobi late 
rotundati emarginati 2 cm. longi 3 cm. lati. Stamina Io brevia 
inaequalia, longiora circ. 2.5 cm. longa, breviora 1.5 cm.; fila- 
menta glabra. Discus basim ovarii pilorum linea Euless. 
Gynaeceum staminibus | paullo longius corolla paullo brevius 
circ. 3 em. longum; ovarium conoideum plus minusve glandu- 
losum suleatum truncatum circ. 4 mm. longum; stylus validus 
ex, toto dense glandulosus superne sub stigmate latiore lobulato 
inerassatus. Species Seriei Souliei. 
S.E. Tibet.. Tsarong. G. Forrest No. 18,672. 1917. 
Species of the phylum of Rh. Wardii distinguished by the 
glandular sticky leaf-buds, the small oval leaves with short yel- 
low stalks and yellow midrib and glaucous under surface. 
Rhododendron hedythamnum, Balf. f. et Forrest. 
Frutex ab 2.5 m. altus tortuose ramosus. Rami ex incre- 
mientis annuis brevibus aedificati hornotini in axillis foliorum 
glandulis rubris breviter stipitatis obsiti, annotini circ. 3 mm. 
diam. glandularum vestigiis obscure iduti nec Pages 
Alabastrorum oblongorum acutorum circ. 3 mm m. perulae 
exteriores crustaceae rotundatae extus abeeae margine 
obscure ciliatae, intimae ligulato-spathulatae ad 3 cm. longae, 
membranaceae flavidae apiculatae extus puberulae margine pilis 
mollibus ciliatae. Folia petiolata ad 7 cm. longa; lamina 
crassiuscula elliptica vel suborbicularis ad 5.5 cm. longa 4 cm. 
lata apiculato-mucronulata, margine cartilaginea paullo recurva, 
basi cordata nunc truncatula; supra pallide olivacea glabra (in 
juventute setulis mox delapsis praecipue ad costam mediam 
dense obtecta), costa media sulcata, venis primariis utrinsecus I2 
paullo impressis ; subtus plus minusve cinerea papillis ceriferis 
epidermicis obtecta glandulis pilisque sebaceis plus minusve in- 
duta, costa media elevata, venis primariis vix manifestis ; petio- 
