ERICACEAE. — RHODODENDRON 549 
axillary buds below the terminal bud which produces only flowers. All these species 
form a very well-marked group, different from the group which is composed of R. 
indicum Sweet and its allies, and are easily distinguished even without flowers by 
the arrangement of the leaves which form whorls of 3-5 leaves at the end of the 
branchlets; on vigorous branches sometimes a few leaves also appear below the 
terminal whorl and these are arranged in pairs, but not opposite, and bear no 
axillary buds. 
Rhododendron Albrechtii Maximowicz, which is usually considered as closely 
related to R. Schlippenbachii belongs to the following section. 
Sect. 4. PENTANTHERA G. Don (Euazalea Maxim.). 
Flowers from a terminal bud; leafy shoots from separate axillary buds below; 
stamens 5; ovary setose. Leaves deciduous, more or less hairy. 
. As the sectional name Eu-azalea is of more recent date and implies that this sec- 
n contains the type of the genus Azalea which is not the case, it cannot be used 
Or it. 
Rhododendron sinense Sweet, Brit. Fl. Gard. ser. 1, III. sub. t. 290 
(1829). — Hooker f. in Bot. Mag. XCVII. t. 5905 (1871). — Hance 
in Jour. Bot. XVI. 109 (1878). — Hemsley in Jour. Linn. Soc. 
XXVI. 30 (1889), quoad plantam sinensem. — Suringar in Gartenfl. 
LVII. 516 (1908). — Schneider, Ill. Handb. Laubholzk. Yl. 497, fig. 
329 a-b (1911). 
Azalea sinensis Loddiges, Bot. Cab. IX. t. 885 (1824). — De Candolle, Prodr. 
VII. 718 (1883). 
Azalea mollis Blume, Bijdr. Fl. Ned. Ind. 853 (1825). 
Toce sinense, var. flavescens Sweet, Brit. Flow. Gard. ser. 1, III. t. 290 
1829). 
Azalea onim Linnaeus, var. sinensis Lindley, Bot. Reg. XV. t. 1253 (1829). 
Rhododendron molle G. Don, Gen. Syst. III. 846 (1834). — Siebold & Zucca- 
rini in Abh. Akad. Münch. IV. pt. III. 131 (Fl. Jap. Fam. Nat. II. 131) 
(1846). 
_ Western Hupeh: near Ichang, conglomerate hills and pine woods, 
alt. 30-300 m., April 24, 1907 and February 18, 1908 (No. 800; bush 
0.5-1.5 m. tall, flowers golden yellow); without locality, A. Henry 
(No. 268). Chekiang: vicinity of Ningpo, 1908, D. Macgregor. 
This plant is rare in the neighborhood of Ichang and has not been reported from 
Szech'uan. The colloquial name is “Lao-hu hwa” ; it is the Yang-chih-chu of 
Chinese books, The allied Rhododendron japonicum Suringar (Azalea japonicaGray, 
R. molle Miquel, not G. Don, nor Siebold & Zucearini), which is often referred to 
this species, is easily distinguished by the leaves being only pilose on the veins 
beneath, by the glabrous winter-buds, the longer and narrower calyx-lobes and by 
the stamens being shorter than the carmine or brick-red corolla. 
