1924] WILSON, THE RHODODENDRONS OF HUPEII 107 



in cultivation originated from these seeds. It flowered for the first time 

 in cultivation in March, 1912, at Caerhays Castle in Cornwall. The young 

 leaves on seedling plants are beautifully colored, shades of brownish or 

 purplish crimson masking the deep green of the mature leaf. In gardens, 

 as yet, this Rhododendron has hardly fulfilled expectations. 



Subgen. III. ANTHODENDRON Endl. 



Rhododendron subgen. Anthodendron Endlicher, Gen. 759 (1839). — 

 Rehder in Wilson & Rehder, Monog. Azal. 115 (1921) where full synonymy 

 and references with a complete description are given. 



KEY TO THE SECTIONS 



Flowers and leaves from the same bud. 



Shoots with flattened, appressed, bristle-like hairs; leaves persistent or some- 

 times deciduous, usually dimorphic, scattered on the branches, elliptic to 



lanceolate or oblanceolate ; 1. Tsutsutsi. 



Shoots glabrous or villose, without bristle-like hairs; leaves deciduous, not 

 dimorphic, in whorls at the end of the branchlets, scattered only on vigorous 



shoots, usually rhombic to obovate, rarely ovate 2. Sciadorhodion. 



Flowers from the terminal bud, leaves from lateral buds below: corolla funnel- 

 form; stamens 5 3. Pentanthera . 



Sect. 1. Tsutsutsi G. Don 



Rhododendron sect. Tsutsutsi G. Don, Gen. Syst. m. 845 (1834), 



excluding Nos. 30, 31, 36, 39.— Wilson in Wilson & Rehder, Monog. 

 Azal. 22 (1921) where complete synonymy and references are given. 

 Represented by 16. 72. Sxmsii. 



Rhododendron Simsii Planchon in Fl. des Serr. ix. 78 (1854). — 



Wilson 



(1921), where complete 



references and synonymy and a full account of the species are given. 



Sect. 2. SCIADORHODION Rehd. & Wils. 



Rhododendron subgen. Anthodendron sect. 2. Sciadorhodion Rehder 



& Wilson in Wilson & Rehder, Monog. Azal. 79 (1921), where complete 

 synonymy is given. 



Represented by 



17. R. Mar iesii 



Marie 



1907, 244. 



Monog 



complete references and synonymy and a full account of the species are 

 given. 



Sect. 3. Pentanthera G. Don 



Rhododendron sect. Pentanthera G. Don, Gen. Syst. in. 846 (1834). — 

 Rehder in Wilson & Rehder, Monog. Azal. 124 (1921), where full refer- 

 ences and complete synonymy are given. 



Represented by 18. R. molle. 



Rhododendron molle G. Don, Gen. Syst. m. 846 (1834).— Wilson 

 in Wilson & Rehder, Monog. Azal. 95 (1921), where complete references 

 and synonymy and a full account of the species are given. 



