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 circa medium affixam gerentia; styli tres, stamina sub- 

 aequantes. Capsula hemispherica, 4-5 mm. diam. lobis diu persistenti- 

 bus reflexis, demum deciduis. 



Western Szech'uan: 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 min. 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 following key and enumera- 

 tion of the Chinese species. 



KEY TO THE SPECIES. 



Praefloratio induplicato-valvata Sect. I. EUDEUTZIA. 



* Inflorescentia manifeste paniculata, sessilis; calycis dentes tubo breviores; 

 filamenta dentata v. edentata, antheram non superantia. 



Subsect. 1. SCABRAE. 



Folia pube dimorpha instructa, pilis subtus 10-15-radiatis. 

 Folia dense serrulata. 

 Panicula angusta; folia crenato-serrulata, subtus sparse stellato-pilosa, 



viridia, pilis simplicibus destituta 1. D. scabra. 



Panicula late pyramidalis; folia argute serrulata, subtus dense stellato- 

 pilosa, canescentia (in varietate viridia), pilis simplicibus ad venas 



instructa 2. D. Schneideriana. 



Folia remote denticulata. 



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. 



