110 WILSON EXPEDITION TO CHINA 



Western Hupeh: Hsing-shan Hsien, side of streams, rare, alt. 900 

 m., May 25, 1907 (No. 1839). 



Viburnum macrocephalum Fortune in Jour. Hort. Soc. Lond. II. 244 

 (sensu Maximowicz in Bull. Soc. Nat. Mosc., liv. 24 [1879]) (1847). 



Western Hupeh: Chang-lo Hsien, thickets, not common, alt. 

 1350m., May 1907 (No. 1834); Chang-yang Hsien, alt. 1200-1500 m., 

 May 1907 (No. 1835). 



Viburnum hypoleucum Rehder in Sargent, Trees and Shrubs, II. Ill 

 (1908); in Fedde, Rep. Sp. Nov. IX. 179 (1911). 



Western Szech'uan: Yangtze banks, Wan Hsien, thickets, com- 

 mon, alt. 100-300 m., April 1908 (No. 1836). 



Viburnum utile Hemsley in Jour. Linn. Soc. XXIII. 356 (1888). 

 Rehder in Sargent, Trees and Shrubs, II. 89, t. 142 (1908). 



Western Hupeh: rocky places around Ichang, alt. 100-900 m., 

 April 1907 and June 1908 (No. 1837). 



Viburnum Rosthornii Graebner in Bot. Jahrb. XXIX. 586 (1901). 



Northwestern Szech'uan: Wa-ssu country, W6n-chuan Hsien, 

 thickets, rare, alt. 2100 m., July 1908 (No. 220 b ); An Hsien, thickets, 

 alt. 600 m., August 1910 (No. 4500). Eastern Szech'uan: Taning 

 Hsien, thickets, alt. 600-900 m., June 1910 (No. 4497). 



The specimens from eastern Szech'uan differ from those of western Szech'uan 

 in the fulvous tomentum of the young branchlets and of the under side of the 

 veins of the young leaves. 



Viburnum rhytidophyllum Hemsley in Jour. Linn. Soc. XXIII. 355 

 (1888). Rehder in Sargent, Trees and Shrubs, II. 39, t. 118 (1907). 



Western Hupeh: north and south of Ichang, woods, alt. 1350- 

 2250 m., May and September 1907 (No. 220, 220 a ). 



Sect. MEGALOTINUS Maximowicz l 



Viburnum cylindricum Hamilton ex Don, Prodr. Fl. Nepal. 142 

 (1825). Rehder in Sargent, Trees and Shrubs, II. 91, t. 143 (1908). 

 Viburnum coriaceum Blume, Bijdr. FL Ned. Ind. 656 (1825). 



1 In my Conspectus of the Viburnums of eastern Asia (in Sargent, Trees and 

 Shrubs, II. 108) I placed V. tomentosum and V. Hanceanum in the section 

 Pseudotinus, but after a new study of the genus I have come to the conclusion 

 that these two species are closer to the species of the section Megalotinus and 

 particularly to V. Colebrookianum', this leaves Pseudotinus a very uniform and 

 well defined group. 



