ROSACEAE. — SPIRAEA 443 
glabra, nervis utrinsecus 4-5 rectis in dentes exeuntibus; petioli 3-6 
mm. longi, graciles, glabri. Inflorescentia umbellato-racemosa, 6-15- 
flora, glabra, in apice ramulorum foliosorum plerumque brevium, 
interdum elongatorum; pedicelli graciles, 5-12 mm., rarius ad 18 mm. 
longi; calycis tubus late turbinatus, extus glaber, intus dense pilosus, 
dentes late triangulares, acuti, extus glabri, intus tomentosi ; petala 
rotundata, 4 mm. diam. ; stamina 40-50, petalis longiora; discus parvus, 
annularis, crenulatus; carpidia glabra, in stylum 3 mm. longum atten- ` 
uata. Fructus dentibus calycis reflexis; folliculi exserti, intus apice 
gibbosi, extus styluus subapicalem patenti-reflexum gerentes. 
Western Szech’uan: Fei-yueh-ling, Ching-chi Hsien, thickets, 
alt. 2000-2300 m., May 1908 (No. 2767, type); Chiu-ting-shan, thick- 
ets, alt. 1500 m., May 22, 1908 (No. 2747). 
Spiraea laeta seems nearest related to S. flexuosa Fischer, which is easily dis- 
tinguished by the pale yellowish-brown branchlets, the conspicuous disk, pubes- 
cent ovaries, upright style borne on the inner side of the follicles, and by the 
narrower simply serrate leaves. The allied S. anomala Batalin differs in the pu- 
bescent ovaries and in the smaller leaves finely and closely serrate, scarcely incised 
and truncate at the base. No. 2747 differs from the type in its larger leaves cu- 
neate at the base, glabrous beneath and up to 4.5 cm. long, and in its longer pedicels. 
Spiraea laeta, var. tenuis Rehder, n. var. 
A typo recedit foliis minoribus ovatis v. late ovatis, 1-2 em. longis 
1 Another new species closely allied to S. flexuosa Fischer is the following: 
Spiraea papillosa Rehder, n. sp. : 
Frutex 2-3-metralis ramis virgatis; ramuli hornotini annotinique glabri v. initio 
Sparse pilosi, flavido-brunnei v. purpureo-castanei, acute angulati, subalati; gemmae 
Ovoideae, obtusae, parvae, pubescentes, perulis exterioribus paucis imbricatis. 
Folia (ea ramulorum floriferorum tantum vidi) papyracea, oblonga, acuta v. breviter 
acuminata, basi late cuneata, supra medium grosse serrata dentibus acuminulatis 
utrinque 3-5, 34.5 em. longa et 12-17 mm. lata, supra laete viridia, subtus glauca, 
ense papillosa, tota facie sparse, ad nervos densius pilis subaccumbentibus seri- 
ceis obtecta, nervis utrinsecus 3-4 supra leviter impressis subtus elevatis; petioli 
pubescentes, 2-3 mm. longi. Inflorescentia umbellato-racemosa, glabra, multi- 
flora, in apice ramulorum patentium foliosorum, 5-10 em. longorum; pedicelli 
graciles, 1-1.5 em. longi; flores albi, 1 cm. diam.; ealycis tubus late turbinatus, 
extus glaber, intus sparse pilosus, dentes late triangulares, acuminulati, extus 
glabri, intus villosuli; petala rotundata, 4.5 mm. diam.; stamina 40-50, petalis 
longiora; discus annularis, erenulatus; carpidia glabra, in stylum 4 mm. longum 
attenuata. Fructus maturus desideratur. 
Szech'uan: valley of Tung river about 40 miles south-east of Tachien-lu, alt. 
300 m., May 1904, E. H. Wilson (Veitch Exped. No. 3550). ; 
Closely allied to S. flexuosa Fischer which is easily distinguished by its glabrous 
er nearly glabrous thinner leaves, not glaucous and papillose beneath, by the in- 
florescence being borne on much shorter ascending branchlets and by the pubescent 
