536 WILSON EXPEDITION TO CHINA 
lata, acuminata, basi cuneata, 7-11 cm. longa et 1.5-2.5 cm. lata, 
supra glabra, maturitate leviter rugulosa, subtus tomento floccoso 
lanuginoso albido vestita, costa media supra impressa subtus manifeste 
elevata glabra, nervis utrinsecus 14-17 supra impressis interdum obso- 
letis; petioli puberuli, mox glabri, 8-15 mm. longi. Flores umbellato- 
racemosi, plures; rhachis circiter 1 em. longa, pubescens; pedicelli laxe 
ferrugineo-villosi et minute glandulosi, 1.5-2 cm. longi; calyx cupularis, 
brevis, lobis 5 rotundatis latioribus quam longis extus sparse puberulis 
et glandulosis; corolla 5-loba, late campanulata, 4-5 cm. longa et 
lata, alba, maculata, lobis ovalibus apice rotundatis circiter 2 cm. 
longis quam tubus intus in parte inferiore dense glandulosus paullo 
brevioribus; stamina circiter 10, inclusa, 2.5-3.5 cm. longa, filamentis 
compressis basim versus glandulosis; ovarium anguste conicum, 7-8 
mm. longum, tomento villoso flavido obtectum; stylus 4-5 em. longus, 
rectus, glaber basi sparse villoso glandulosoque excepto, stigmate 
magno applanato. Capsula cylindrica, 2-2.5 em. longa et 8-10 mu 
diam., 8-locularis, partim tomento rufo obtecta, glabrescens; semina 
brunnea, ovoidea v. oblongo-ovoidea, compressa, circiter 2 mm. longa. 
Western Szech'uan: west and near Wén-ch'uan Hsien, thickets, 
alt. 2000-2600 m., July and October 1908 (No. 1198, type); same 
locality, alt. 2600-3300 m., October 1910 (No. 4248); south-east of 
Sungpan Ting, woods, alt. 3300 m., August 1910 (No. 4727). 
This species is related to R. floribundum Franchet, which is readily distinguished 
by its much larger, subbullate, strongly veined leaves with the secondary m 
prominent below, and rather different, smaller flowers. Our material consists 0 
specimens with ripe fruit and old flowers; the color of the flowers is unknown, 
but it is apparently white or nearly so. In the region where this species grows 
Rhododendrons are called “ Yang-ngo-hwa." caf 
It is fitting that the name of Hunnewell should be associated with a species © 
Rhododendron, for two generations of this Massachusetts family have devo 
themselves to the cultivation of these plants in their gardens at Wellesley and have 
lost no opportunity to increase the knowledge and advance the interests of American 
horticulture. 
To this group also belong the two following species: 
Rhododendron Monbeigii Rehder & Wilson, n. sp. te 
Frutex ramis validis, annotinis glabris. Folia tenuiter coriacea, oblanceola 
v. oblongo-lanceolata, acuta v. brevissime acuminata, basi sensim attenust® 
9-15 cm. longa et 3-4 cm. lata, supra glabra, obsolete rugulosa, subtus due 
tomento lanuginoso arcte adpresso albido vestita, costa media supra impress» 
subtus elevata flavida, glabra v. fere glabra, nervis utrinsecus 12-15 supra leviter 
v. vix impressis subtus leviter elevatis; petioli validi, circiter 1 cm. longi, 
v. fere glabri. Flores 10-12, umbellato-racemosi; bracteae caducae, ures cU 
extus villosae, 1-1.5 em. longae; pedicelli sparsissime pilosi v. fere glabri, i 
1.5 cm. longi; calyx minimus, cupularis, lobis latis brevissimis acutis v. obtus! 
