446 WILSON EXPEDITION TO CHINA 



Spiraea ovalis Rehder, n. sp. 



Frutex 2-3-metralis ramis virgatis; ramuli teretes, glabri, hornotini 

 purpurascentes, annotini fusci; gemmae ovoideae, parvae, obtusius- 

 culae, pubescentes, perulis pluribus imbricatis obtectae. Folia decidua, 

 ovalia, obtusa, rarius acutiuscula, Integra, interdum apice crenato- 

 serrata, basi late cuneata v. fere rotundata, 1.5-2 cm. longa et 0.6-1.2 

 cm. lata, supra laete luteo-viridia, glabra, subtus pallide viridia, reti- 

 culo nervorum colore obscuriore conspicuo, glabra v. secus costam 

 basim versus pilis sparsis instructa, nervis utrinsecus 3-4 subtus leviter 

 elevatis; petioli graciles, purpurascentes, glabri, 1-3 mm. longi. 

 Corymbus multiflorus convexus, glaberrimus, in apice ramulorum plu- 

 rifoliatorum 2-3 cm. longorum, 2.5-3.5 cm. diam.; flores albi, 5 mm. 

 diam. ; calycis tubus late turbinatus, extus glaber, purpurascens, intus 

 breviter pilosus, dentes ovato-triangulares, acuti, intus apice villo- 

 suli; petala suborbicularia, 1.5 cm. longa et 2 mm. lata; stamina 20, 

 petalis subaequilonga; discus conspicuus, 10-lobatus, lobis distinctis 

 apice et dorso leviter sulcatis; carpidia sparse villosa, sty lis apicali- 

 bus quam dimidia stamina paullo brevioribus. Fructus maturus 

 desideratur. 



Western Hupeh: Fang Hsien, thickets, rare, alt. 2000-2300 m., 

 June 16, 1910 (No. 4573). 



Allied to S. Veitchii Hemsley, which is easily distinguished by the pubescent 

 inflorescence, the smaller flowers and by the puberulous branchlets and leaves. 



Spiraea Bliimei G. Don, Gen. Syst. II. 518 (1832). — Maximowicz 

 in Act. Hort. Petrop. VI. 196 (1879). — Morren in Belg. Hort. VIII. 

 131, t. 37, fig. 2 (1858). — Siebold in Jaarh. Maatsch. Aanmoed. Tuinh. 

 1845,76, t. 8. — Zabel, Strauch. Spir. 44 (1893). — Schneider, III. 

 Handb. Laubholzk. I. 465, fig. 290 v-x, 291 h (1905). 



Spiraea chamaedrifolia Blume, Bijdr. Fl. Ned. Ind. 1114 (pro parte, non Lin- 

 naeus) (1826). 



Kiangsi : Kuling, abundant, alt. 1300 m., July 30, 1907 (No. 1721; 

 shrub 1-2 m. high). Western Hupeh: Hsing-shan Hsien, ravines, 

 etc., alt. 600-1300 m., August 6, 1907 (No. 2769; shrub 0.6-1.20 m. 

 high, flowers white); Ichang, A. Henry (No. 3570); without precise 

 locahty, A. Henry (No. 1181); "Ma-pan-scian," alt. 1000 m., May 

 1907, C. Silvestri (No. 1026). Eastern Szech'uan: Taning Hsien, 

 thickets, alt. 2000 m., June 25, 1910 (No. 4570). Shensi : "Kin-gua- 

 san," July 10, 1897, G. Giraldi. 



