ROSACEAE. — SPIRAEA 451 



noticed by Batalin in the flowers of this variety is quite noticeable in the dried 

 specimens, although in the living plant the flowers are probably white. This 

 change of color seems to occur occasionally in other species, and also in Wilson's 

 No. 2765 of S. Henryi the flowers are decidedly yellowish. 



Spiraea Rosthomii Pritzel in Bot. Jahrb. XXIX. 383 (1900). 

 Spiraea Prattii Schneider, III. Handb. Laubholzk. I. 472 (1905). 



Western Szech'uan: north-east of Tachien-lu, woods and thick- 

 ets, alt. 3300 m., July 4 and October 1908 (No. 965%- shrub 1-2 m. 

 high; west and near Wen-ch'uan Hsien, thickets, alt. 1700-2700 m., 

 July 1908 (No. 965^); same locality, October 1910 (No. 4305); Mupin, 

 thickets, alt. 2000-2500 m., June 1908 (No. 2758; bush, 1.75-2 m. 

 high) ; Wa-shan, thickets, alt. 2000-2600 m., June and September 1908 

 (No, 965; bush 1-2 m., flowers white) ; same locahty, alt. 1700-2300 m., 

 June 1908 (No. 2759; bush, 1-1.75 m. high); Niu-tou-shan, west of 

 Kuan Hsien, alt. 2000-2700 ra., June 20, 1908 (No. 2748) ; without pre- 

 cise locality, alt. 3300-4000 m., July 1903 (Veitch Exped. No. 3555^); 

 Nanch'uan, A. von Rosthorn (No. 1837, type). 



This species is very near S. longigemmis Zabel which differs chiefly in its gla- 

 brous, less deeply and closer serrate leaves. Pritzel describes the buds as spher- 

 ical, " gemmis sphaericis," but a fragment of the type specimen which I have 

 before me and which agrees in every other particular with the description has 

 winter-buds like those of S. longigemmis. Spiraea Rosthomii is possibly only a 

 pubescent variety of S. longigemmis. To the latter I refer Wilson's Veitch Exped. 

 No. 3555^ from western Szech'uan. 



Spiraea japonica Linnaeus f., Suppl. 262 (1781). — Maximowicz in 

 Act. Hort. Petrop. VI. 203 (1879). — Hemsley in Jour. Linn. Soc. 

 XXIII. 225 (1887). — Zabel, Sirauch. Spir. 64 (1893). — Schneider, 

 III Handh. Laubholzk. I. 475, fig. 294 m, 295 k-1 (1905). 



Spiraea callosa Thunberg, Fl. Jap. 209 (1784). — Seringe in De Candolle, 

 Prodr. II. 544 (1825). 



The type does not seem to occur in China. 



• X. 



Spiraea japonica, var. Fortunei Rehder in Bailey, Cycl. Am. Hort. 

 IV. 1703 (1902). 



Spiraea callosa Lindley & Paxton, Flow. Card. II. 113, fig. 191 (non. Thunberg) 



(1851). 

 Spiraea Fortunei Planchon in Fl. des Serr. IX. 35, t. 871 (1853). — Hooker 



f. in Bot. Mag. LXXXVI. t. 5164 (1860). 



Kiangsi: Ruling, roadsides, abundant, alt. 1300 m., July 30, 1907 

 (No. 1717; bush 0.75-1 m., flowers pink). Western Hupeh: Fang 



