ROSACEAE. — SPIRAEA 439 
Spiraea acutifolia Willdenow, Enum. Pl. Hort. Berol. 540 (1809). — Guimpel, 
Otto & Hayne, Abbild. Holz. 9, t. 9 (1825). — Zabel, Strauch. Spir. 20 
(1893). 
Spiraea hypericifolia, var. acuta Seringe in De Candolle, Prodr. II. 543 (1825). 
Spiraea hypericifolia, var. acutifolia Dippel, Handb. Laubholzk. III. 464 (1893). 
The typical S. hypericifolia does not seem to occur in China. 
Spiraea hypericifolia, var. hupehensis Rehder, n. var. 
Frutex metralis ramis virgatis erectis; ramuli hornotini glabri. 
Folia oblonga v. elliptico-oblonga, utrinque acuta, apice argute serru- 
lata, glabra, 1-1.8 em. longa et 3-6 mm. lata. Flores in umbellis 
2-4-floris, 8-10 mm. diam., pedicellis 8-14 mm. longis; petala orbicu- 
lari-obovata, 3-4.5 mm. diam.; stamina petalis dimidiis paullo brevi- 
ores; folliculi sepalis duplo longiores, stylo recurvo. 
Western Hupeh: Patung Hsien, Yangtze banks, steep dry cliffs, 
30-300 m., March 24, 1908 (No. 2754); without precise locality, March 
1901 (Veitch Exped. No. 1754). Shensi: Yenan Fu, May 1910, W. 
Purdom (No. 346). 
This variety differs from S. hypericifolia, var. Plukinetiana Seringe in the acute 
leaves sharply serrate at the apex, and from var. acuta Seringe in the large, nearly 
orbicular petals 3-4.5 mm. broad. Without well-developed leaves it looks much 
like S. Thunbergii Siebold, and probably the specimens from central China which 
have been referred to S. Thunbergii belong to this variety. 
1 In this group belongs the following new Species from Yunnan: 
Spiraea fulvescens Rehder, n. sp. 
Frutex vix metralis ramis virgatis; ramuli hornotini dense tomento fulvescenti 
vestiti, teretes, annotini tomentosuli, tarde glabrescentes; vetustiores fulvescenti- 
cinerei, cortice lamellis parvis solubili, ramulis valde abreviatis numerosis ferrugineo- 
tomentosis ob bases petiolorum persistentes congestos dense verrucosis instituti; 
gemmae parvae, globoso-ovoideae, obtusae, perulis pluribus dense fulvescenti- 
villosis. Folia pluria ad annum secundum persistentia, chartacea, partim fascicu- 
lata, supra glaucescenti-viridia, initio pilis minutis sparse conspersa, demum 
bra, venarum reticulo leviter impresso, subtus glauca, sub lente papillosa, laxe, 
ad nervos densius villosa, ea turionum ovata v. fere rotundata, basi rotundata, 
V. ovalia et basi late cuneata, obtusiuscula, inaequaliter v. fere dupliciter crenato- 
serrata, 1.5-2 em. longa et 1.2-2 cm. lata, ea fascieulorum obovata v. obovato- 
oblonga, basi cuneata, obtusa v. acutiuscula, apicem versus sparse crenato-serrata 
V. minora fere integra, 2-15 mm. longa et 4-8 mm. lata, venis utrinsecus 2-3; pe- 
tioli villosi 1-2 mm. longi v. fere nulli. Umbellae 5-8-florae, sessiles, basi foliis 
fasciculatis parvis cireumdatis et partim folio persistenti suffultae, numerosissimae 
et approximatae secus ramos virgatos; pedicelli 3-6 mm. longi, sparse villosi v. 
fere glabri; calyx extus glaber, tubus intus villosulus, calycis dentes ovato-triangu- 
» obtusi v. acuminulati, extus glabri, intus villosuli; petala rotundato-obovata, 
brevissime unguiculata, alba, 2 mm. diam.; stamina circa 20, petalis dimidio bre- 
Viora; carpidia glabra; styli staminibus paullo breviores. Fructus calycis dentibus 
