ERICACEAE. — RHODODENDRON 549 



axillary buds below tho torminal 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 Eii-azalea is of more recent date and implies that this sec- 

 tion contains the type of the genus Azalea which is not the case, it cannot be used 

 for 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, III. Handb. Lauhholzk. II. 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). 

 Rhododendron sinense, var. flavescens Sweet, Brit. Flow. Gard. ser. 1, III. t. 290 



(1829). 

 Azalea pontica Linnaeus, var. sinensis Lindlej'', Bot. Reg. XV. t. 1253 (1829). 

 Rhododendron molle G. Don, Gen. Syst. III. 846 (1834). — Siebold & Zucca- 

 rini in Abh. Akad. Miinch. 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. 8oo; 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 aWicd Rhododendron japonicum Sunngar {Azalea japonicaGTAV, 

 R. molle Miquel, not G. Don, nor Siebold & Zuccarini), 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. 



