Sect. II. SCIADORHODION Rehd. & Wils., n. sect. 1 



Rhododendron section Tsutsutsi G. Don, Gen. Syst. III. 847 (1834), 

 as to species nos. 30, 31. — Render & Wilson in Sargent, PI. Wilson. 

 I. 547 (1913), in part. 



Rhododendron subgenus Tsvtsia Planchon in Fl. des Serr. XI. 75 (1854); in 



Rev. Hort. 1854, 43, as to R. Farrerae. 

 Rhododendron section Azalea Maximowicz in Mem. Acad. Sci. St. PUersbourg, 



se>. 7, XVI. No. 9, 24 (Rhodod. As. Or.) (1870), in part. 

 Azalea subgenus Euazalea K. Koch, Dendr. II. pt. 1, 179 (1872), as to A. 



reticulata. 

 Rhododendron section Rhodora Dippel, Handb. Laubholzk. I. 418 (1889), in 



part. 



Shrubs with rigid, usually verticillate, often ascending-spreading branches and 

 glabrous or villose shoots without bristle-like hairs. Flowers from terminal buds, 

 with leafy shoots from axils of lower scales of the same bud. Leaves deciduous, 

 in whorls of 3 to 5 at the end of the branchlets, on vigorous shoots scattered, 

 not dimorphic, usually rhombic to obovate, rarely ovate, without appressed 

 bristle-like hairs. Corolla rotate-campanulate, rarely rotate-funnel-form; stamens 

 from 6 to 10 (rarely 5 by abortion), unequal, sometimes declinate. Fruit oblong- 

 ovoid to cylindric, rarely conic-ovoid, often furrowed, villose or glandular, never 

 strigose. 



This section is found only in eastern Asia, where it is represented by 6 species. 



Rhododendron Farrerae Tate apud Sweet, Brit. Flow. Gard. ser. 2, 1. 

 t. 95 (1831). — G. Don, Gen. Syst. III. 846 (1834).— De Candolle, 

 Prodr. VII. 725, pt. 2 (1839). — Planchon in Fl. des Serr. XIX. 80 

 (1854); in Rev. Hort. 1854, 64. — Maximowicz in Mem. Acad. Sci. St. 

 PUersbourg, se>. 7, XVI. No. 9, 25 (Rhodod. As. Or.) (1870).— Hance 

 in Jour. Linn. Soc. XIII. 110 (1873). — Hemsley in Jour. Linn. Soc. 



1 Sectio inter sect. Tsutsutsi et Rhodoram medium tenens, a priori indu- 

 mento piloso vel villoso pallido, non strigoso et fusco, foliis semper deciduis satis 

 magnis, corolla rotato vel rotato-campanulata, ovario villoso vel glabro, non stri- 

 goso, a posteriori gemmis terminalibus flores et folia simul proferentibus bene 

 differt, ab utraque sectione foliis in apice ramulorum subverticillatim congestis 

 quasi umbellam vel umbraculum (graece auks, <tki6.Sos, unde nomen) formantibus 

 satis magnis plerumque late obovatis vel rhombico-ovatis distat. 



In Sargent, Plantae Wikonianae, I. 548 (1913), we suggested that with their 

 whorled leaves the species here enumerated formed a well-marked group easily 

 distinguished from Tsutsutsi, although agreeing in the character of the winter- 

 buds. Further investigation has brought to light other differences and we are of 

 the opinion that it is best to place them in a distinct section. 



A. R. & E. H. W. 



79 



