Tap. 8601. 
RHODODENDRON stAmMINeum. 
Western China. 
Eiricackak, Tribe RHoDOREAR. 
RHODODENDRON, Linn.; Benth. et Hook. f. Gen. Plant. vol. ii. p. 599. 
Rhododendron (§ Choniastrum) stamineum, Franch. in Bull. Soc. Bot. Fr. 
vol. xxxiii. (1886) p. 286; Hemsl. in Jowrn. Linn, Soc. vol. xxvi. p. 80; 
Hemsl. et Wilson in Kew Bull. 1910, p. 116; Rehder et Wilson in 
Sargent Pl. Wilsonianae, p. 546; species in sectione Choniastro, Franch., 
staminibus longe exsertis valde distincta. 
Frutex ; ramuli subteretes, circiter 8 mm. crassi, cortice glabro pallide brunneo 
obtecti. Folia ovato-lanceolata, basi obtusa, apice sensim subobtuse 
acuminata, 5-10 cm. longa, 2-3°5 em. lata, margine cartilaginea, rigide 
coriacea, supra nitida, intense viridia, infra pallide viridia, utrinque glabra 
et eglandulosa ; costa supra leviter impressa, infra prominens, basi circiter 
1-5 mm. lata, apicem versus attenuata; nervi laterales venique utrinque 
vix-distincti ; petioli 0° 5-1 cm. longi, 1:75 mm. crassi, supra anguste rimosi, 
glabri. Inflorescentia circiter 10-nata; flores in fasciculos axillares 8-4-floros 
dispositi; pedicelli 2 cm. longi, 0°5 mm. crassi, glabri. Calycis segmenta 
5, subaequalia, lineari-lanceolata, obtusa, 1-3 mm. longa, membranacea, 
glabra. Corolla infundibuliformis, alba, labio posteriore inferne flavo ; 
tubus cylindricus, 1°3-1°5 cm. longus, circiter 3 mm. diametro, utrinque 
glaber; lobi 5, subrecurvati, oblongo-lanceolati, subacuti, 1°5-2°5 cm. 
longi, glabri. Stamina 10, magnopere exserta; filamenta usque ad 4 cm. 
longa, inferne breviter albo-pilosa; antherae lutescentes, sicco fere albae, 
ellipsoideae, 2 mm. longae. Ovariwm 5-loculare, elongatum, 4-5 mm. 
longum, glabrum vel parce pubescens, eglandulosum ; stylus longe exsertus, 
5 cm. longus, gracilis, glaber, stigmate subcapitato 2 mm. diametro 
coronatus.—R. pittosporaefolium, Hemsl. in Journ. Linn. Soc. vol. xxvi., 
(1889), p. 29; Diels in Engl. Bot. Jahrb, vol. xxix. p. 515; Bean in Flora 
& Sylva, vol. iii. p. 164. R. aucubaefolium, Hemsl. in Journ. Linn. Soc. 
l.e., p. 19, quoad Rces: folia ad Daphniphyllum macropodum pertinent ; 
Bean in Flora & Sylva 1. c, 162.—J. Hurcuinson. 
The Choniastrum section of the genus Lthododendron 
includes a small and fairly compact group of seven species 
distinguished from their congeners by the position of the 
flowers, which are produced from axillary buds crowded 
at the ends of the branches. This character is always 
associated with eglandular persistent leaves and long 
tubular funnel-shaped corollas; even the seed-pods in 
this group have a facies of their own. Within the 
Choniastrum group the subject of our illustration, 
Marca, 1915, 
