454 WILSON EXPEDITION TO CHINA 



This may be a distinct species, but with the material before me I am unable to find 

 other differences. 



Spiraea Miyabei Koidzumi in Tokyo Bot. Mag. XXIII. 166 (1909). 



Japan: Yezo, near Sapporo, on hills to the west, June 1890, K. 

 Miyahe; banks of the Togobira River, June 11, 1885 (Herh. Agric. Col- 

 lege, Sapporo). 



The specimens before me seem to difTer from the original description only in the 

 somewhat broader leaves which are 2-3 cm. broad and therefore ovate to ovate- 

 oblong. A number of related forma appear in western and central China which 

 I am unable to separate specifically from S. Miyabei. From S. japonica Thunberg 

 they differ in the glabrous branchlets, the slender petioles, the stalked, leafless and 

 rather compact inflorescence, the glabrous or glabrescent calyx, and in the white 

 flowers; from S. bella Sims they differ in the perfect, usually white flowers, the larger 

 leafless inflorescence with nearly horizontally spreading branches, the glabrous young 

 branchlets, and in the larger usually acuminate, doubly serrate leaves; from S. betuli- 

 folia Pallas in the slenderer petioles, the acuminate doubly serrate leaves, and in the 

 usually pubescent inflorescence; and from S. Fritschiana Schneider in the doubly 

 serrate leaves, in the terete or nearly terete pale branches, and in the usually pu- 

 bescent inflorescence. In foliage they resemble also *S. anomala Batalin and S. 

 laeta Rehder, and in habit S. chamaedryfolia Linnaeaus; they are, however, at once 

 distinguished from these three species by the compound inflorescence. 



Spiraea Miyabei, var. glabrata Rehder, n. var. 



A typo recedit praecipue inflorescentia glabra, foliis basi late cunea- 

 tis, sed interdum fere rotundatis. 



Western Hupeh: Hsing-shan Hsien, woodlands, etc., alt. 1300- 

 1800 m., June 4 and August 1907 (No. 195; bush, 1-1.75 m. high, 

 flowers white, type); mountains north of Ichang, alt. 1300-1600 m. 

 (No. 385, seeds only); Fang Hsien, woodlands, alt. 1300-2000 m., 

 June 4 and November 1907 (No. 577; bush, 1-1.75 m. high, flowers 

 pinkish). Changlo Hsien, moist places on roadsides, alt. 1000-1600 m., 

 June 1907 (No. 2751; bush, 1-1.75 m. high, flowers white); without 

 precise locality, June 1901 (Veitch Exped. No. 1199). Shensi: Tai- 

 pei-shan, July 4, 1910, Wm. Purdom (No. 7) ; valleys leading to Tai- 

 pei-shan, July 1, 1908, Wm. Purdom (No. 427; bush, 2 m., flowers 

 white). 



This variety somewhat resembles in its glabrous inflorescence S. betulaefolia 

 Pallas and S. Fritschiana Schneider but is easily distinguished by the characters 

 pointed out in the note under the species. Nos. 2751 and 1199 differ from the type 

 of this variety in their larger leaves, up to 10 cm. long and 5.5 cm. broad; the flowers 

 also are somewhat larger. 



A picture of this shrub in full bloom will be found under No. 0107 of Wilson's 

 collection of photographs. 



