Tas. 8841, 
RHODODENDRON sgrorrinum. 
Western China. 
ERrcacear. Tribe RHODOREAE. 
RuopopenDkoN, Linn.; Benth. et Hook. f. Gen. Plant. vol. ii. p. 599, 
Rhododendron serotinum, Hutchinson in Rhod. Soc. Notes, 1918, p. 191 
(nomen) ; species Rf. Fortwnet, Lindl., et R. decoro, Franch., affinis, ab 
illo filamentis inferne molliter pubescentibus, ab hoe foliis basi inaequaliter 
cordatis corollae tubo externe papilloso-glanduloso et ab ambobus habitu 
longe ramoso et corolla interne maculata differt. 
Frutex usque ad 3 m. altus, ramis elongatis laxis; ramuli vetustiores flavo- 
brunnei, laeves, nitidi, annotini virides nitidi, lenticellis minutis palli- 
dioribus notati. Folia oblongo-elliptica, basi inaequalia et leviter cordata, 
apice rotundata, retuso-mucronata, 10-15 cm. longa, 6-7 cm. lata, glabra, 
supra opaco-viridia, infra glauco-viridia, conspicue reticulata et minutissime 
papillosa, papillis brevissimis suborbicularibus in venulis vix contiguis inter 
venulos densissimis et crystallinis; nervi laterales utrinsecus circiter 15, a 
costa media sub angulo fere 90° abeuntes, marginem versus valde ramosi, 
infra distincti; petioli 2-3-5 cm. longi, glabri, fere teretes, circiter 3°5 mm. 
crassi. Inflorescentia breviter racemosa, terminalis, 7-8-flora; axis 3 cm. 
longa, minute glanduloso-papillosa; bracteae extra pilosae, pedicelli 
3-4°5 cm. longi, 3°5 mm. crassi, pallide straminei roseo suffusi, minute 
papilloso-glandulosi. Calyx obliquus, circiter 8 mm. diametro, undulato- 
lobatus, secus marginem et externe glandulis sessilibus minutis rubris 
ornatus. Corolla subnutans, odorata, alba, externe roseo leviter suffusa, 
intra tubum dorso rubro maculata et suffusa; tubus late infundibuliformis, 
4-4-5 cm. longus, extra glandulis albidis stipitatis munitus; lobi 7, 
patentes, late suborbiculares, apice late emarginati, circiter 2 cm. longi et 
3 cm. lati. Stamina 15-16, inaequalia, dorsalia breviora, usque ad 
4°5 cm. longa; filamenta alba, inferne breviter pubescentia; antherae 
pallide brunneae, 4°5 mm. longae. Ovariwm 10-loculare, oblongo- 
ovoideum, 6 mm. longum, glandulis albidis brevissime stipitatis indutum ; 
stylus stamina paullo superans, 4-4-5 cm. longus, albus, stigmate ellip- 
soideo vel suborbiculare 4-4°5 mm. lato viscoso pallide viride coronatus. 
Fructus ignotus.—J. Hurcuison. 
« one 
The new Rhododendron here figured was received as a 
seedling from the Jardin des Plantes at Paris in 1889, 
under the name /. decorum, Franch., and was raised there 
from seed sent by Delavay from China where . decorum 
is. a native plant. There are, however, many differences 
_ Aprit-JuneE, 1920, 
