14 WILSON EXPEDITION TO CHINA 
tubum subaequilongi v. paullo tantum breviores; petala obovata, 
10 mm. v. interdum 5 mm. longa, 7-8 mm. lata, alba, extus rubescentia 
et sparse stellato-pilosa; stamina petalis tertia parte breviora, fila- 
menta exteriorum apice obtusa v. obsolete 2-3-dentata, antheram 
breviter stipitatam paullo infra apicem affixam gerentia, interiorum 
antheram cirea medium affixam gerentia; styli tres, stamina sub- 
aequantes. Capsula hemispherica, 4-5 mm. diam. lobis diu persistenti- 
bus reflexis, demum deciduis. 
Western Szechuan: Pan-lan-shan, west of Kuan Hsien, cliffs, 
alt. 2100-2700 m., June 1908 (No. 2902, type); Nin-tou-shan, west of 
Kuan Hsien, thickets, alt. 1500-2100 m. (No. 2898); Chin Ting-shan, 
thickets, alt. 1800 m., May 23, 1908 (No. 2897); Wa-shan, alt. 3000 m., 
July 1903 (Veitch Exped. No. 3566). Hupeh; without locality 
(Veitch Exped. No. 1919). 
Related to D. corymbosa R. Brown and D. parviflora Bunge, from both of which 
it is easily distinguished by the hairs on the under side of the leaves having only 
5-6 rays, by the filaments extending undivided above the insertion of the anthers, 
and by the color of the flowers. The flowers vary greatly in size; in the type the 
petals are 10 mm. long, while in No. 2897 they are scarcely 5 mm. long and slightly 
longer in No. 3566; in No. 1919 they are 7 mm. long. No. 3586 differs besides in 
its smaller leaves nearly glabrous beneath. 
SYNOPSIS OF THE CHINESE DEUTZIAS. 
While determining the Deutzias of the Wilson collection I have found a large 
amount of undetermined material which led me to a closer study of all the Chinese 
species. The results of this study are embodied in the f k 
tion of the Chinese species. x in the following key and enumera- 
KEY TO THE SPECIES. 
Praefloratio induplicato-valvata . . . ......... Sect. I. EUDEUTZIA. 
Subsect, 1. SCABRAE. 
Folia pube dimorpha instru ilis iati 
To M Sa cta, pilis subtus 10—15-radiatis. 
Wow I LE € 4 7-9 Seat Sy 
pilosa, canescentia (in varietate viridia), pilis simplicibus ad venas 
insta Diu sl S s IS. neideria: 
Folia remote denticulata, Pee maion p^ 
Styli plerumque 3; petioli 1-3 mm. longi; folia utrinsecus 5—6-costata. 
= 3. D. ningpoensis. 
Styli plerumque 5; petioli 5-10 mm. longi; folia utrinsecus 8-12-costata. 
4. D. pulchra. 
