May, 19-21.] DEUTZIA IN JAPOi^IA, COBEA ET FORMOSA. 93 



f. macrocarpa, Nakai. 



D. scabra, Rehder in PI. Wils. I. p. 22 (1911). 



Folia ut forma angustifolia. Infloresccntia patentim fusco-pubes- 

 cens. CarpcUn 6—7 mm. lata. 



Horn. Jap. Omi ulsugi. 



Hab. 

 Shikokii : in oppido ' >kubo prov. Tosa (Saburo Okubo). 



We are grateful to Mr. A. Rehder of the Arnold Arboretum who 

 has recently cleared up our doubtful species Dcutzia scahra. Whoever 

 knew Deutzia crenata will entertain a doubt upon the figure in 

 Thunberg's Flora Japonica. The leaves are too broad for those of 

 D. crenata and the flowers are too few in number. However I rather 

 incline to adopt the name Deutzia crenata, cancelling out such an 

 invalid name Deutzia scahra which really means two distinct species. 



Deutzia. scabra var. typica f. puhescens, Making which I havC 

 not seen the specimens, seems to be identical with the type of 

 Deutzia crenata. 



Subsect. II. Uniflorae, Nakai. Subsect. nov. 



Cortex suberosa. Infloresccntia 1 (rarius 2) flora. Ovarium 

 semisuperum. Calycis dentes triangulari-acuminata. 

 Sp. 15) Deutzia uniflora, Shirai in Tokyo Bot. Mag. XII. p. 110. 

 PI. V. (1898). Matsumura Ind. PI. Jap. II. 2. p. 178 (1912). Rehder 

 in PI. Wils. I. 2. p. 150 (1912). 



Nom. Jap. Umeutsugi (Ranzan Ono). Nikko utsugi (Ygkusai 



Iinuma). 

 Hab. 



Hondo: in monte Odake prov. Musashi (Jmzo Matsumura). monte 

 Mitsumine et monte Mitake prov. Musashi (fide Mitsutaro Sfiirai). 



Subsect. HI. Grandiflorse, Rehder in PI. Wils. I. p. 21 (1911). 



Cortex non suberosa. Infloresccntia in apice rami liornotini 

 foliosi terminalis 1-3 flora. Ovarium semisuperum. Dentes calycis 

 angusti. 

 Sp. IR). Deutzia prunifolia, Rehder in PI. Wils. I. p. 22 (1911). 



D. grandiflora, (non Bunge) Komarov F1. Mansh. II. j). 432 

 (1904-). Nakai F1. Kor. H. p. 486. p.p. (1911). Yabe Enum. PI. 

 South Manch. p. 61 (1912). 



Frutex nanus circ. 0.5-1.0 metralis rarissime 1.5 metralis altus 

 vulgo saxatilis. Ramus vctustus cincreo-fuscus v. sordide cinereo- 

 brunneus. Ramus annotinus claro-fuscus v. intense fuscus. Ramus 

 juvenilis pilis radiatis patentim pubescens. Petioli 1-6 mm. longi 



