ROSACEAE. — SPIRAEA 441 



lobatus, lobis apice plerumque leviter emarginatis; stamina 20, longiora 

 petalis subaequilonga; carpidia glabra ventre villosulo excepto, in 

 stylum apicalem attenuata; styli trientem staminum aequantes. 

 Fructus sepalis erectis v. apice reflexis; folliculi erecti, flavescentes 

 glabri, nitidi, vix 2 mm. longi, stylo persistente apicali horizontaliter 

 patenti coronati. 



Western Szech'uan: near Tachien-lu, upland thickets, alt. 

 3000-3300 m., June and September 1908 (No. 989, type); west of 

 Tachien-lu, uplands, alt. 3000-3300 m., June 1908 (No. 2760); Wa- 

 shan, thickets, alt. 2700 m., July 1908 (No. 2761); without precise 

 locality, ravines, alt. 3700 m., June 1904 (Veitch Exped. No. 3556); 

 heath, alt. 3300-4000 m., June 1904 (Veitch Exped. No. 35564- 

 Hupeh: A. Henry (No. 6968). 



A graceful species resembling Spiraea alpina Pallas which is easily distinguished 

 by its linear-lanceolate acute leaves papillose beneath and by the nearly sessile 

 umbels. Wilson's No. 2761 differs from the type in its perfectly glabrous leaves 

 and glabrous inflorescence borne on elongated, many-leaved branchlets 1.5-4 cm. 

 long. Occasionally one of the lower pedicels is branched and bears two flowers. 

 (See in this connection note on S. Schneideriana, var. amphidoxa Rehder, p. 450.) 

 Henry's 6968 is also glabrous, but the flowering branchlets are short, while Wil- 

 son's No. 3556'' differs in the more densely pubescent leaves, minutely pubescent 

 also on their upper surface and in the more densely pubescent inner surface of the 

 calyx-tube. Young seedling plants of this species have the leaves crenately ser- 

 rate near the apex. 



Spiraea gemmata Zabel, Strauch. Spir. 23 (1893). — Schneider, 

 III. Handb. Lauhholzk. I. 466, fig. 290 f-g (1905). 



Spiraea mongolica Koehne, Deutsch. Dendr. 212 (non Maximowicz) (1893). 



Western Szech'uan: around Sungpan, uplands, alt. 3000-3300 

 m., October 1910 (No. 4329). Shensi: Tai-pei-shan, 1910, W. Pur- 

 dom (No. 2). Kansu : Min-chou, alt. 2800 m., 1911, W. Purdom. 



Wilson's specimens differ slightly from the cultivated type in the dark brown 

 branches and in the more strongly veined and somewhat broader leaves, which 

 are 14-18 mm. long and 5-7 mm. broad, while in Purdom' s specimen they are still 

 broader. Plants distributed by the Veitchian nurseries under Wilson's seed num- 

 bers 1474 and 1690 belong to this species. 



Spiraea mollifolia Rehder, n. sp. 



Frutex 1-2-metralis, ramosissimus divaricatus, ramis longioribus 

 arcuatis; ramuli hornotini laxe villosi, glabrescentes, annotini mani- 

 festo angulati, obscure purpureo-brunnei, glabri, vctustiores lamellis 

 tenuibus v. striis decorticantes; gemmae ovoideae acuminatae, 3-4 



