Nov., wis.] JAPANESE ARABIS. 243 



Matsumura). inter Oiwake et Komoro prov. Shinano (Jinzo Matsu- 

 mura). Aomori prov. Mutsu (Nobutaro Kinashi). Sanmata prov. 

 Tamba (Kei Takenouchij. Asamayama prov. Shinano (Jinzo Matsu- 

 mura). Nikko prov. Shimotsuke (Komajiro Sawada). monte Togakushi 

 prov. Shinano (Jinzo Matsumura). Tolaru prov. Idzu (Jinzo Matsu- 

 mura). Yokohama prov. Musashi (Jinzo Matsumura). 



Kuril : insula Urupp (Tasaku Kitahara). 



Kiusiu : Nittanohara prov. Bungo (Hamada). 

 Distr. China ? 



10) Arabis yokoscensis, Fk. et Sav. Enum. PI. Jap. I. (1875) p. 34. 

 II. (1879) p. 279. Matsum. Ind. PI. Jap. II. 2. (1912) p. 149. 



Hab. 

 Hondo : Yokosuka prov. Sagami. 

 Pianta endemica ! 



11) Arabis Boissieuana, Nakai. sp. nov. 



A. amplexicnulis, (non Edgewortii) Fran, et Say. Enum. PI. Jap. I. 

 (1875) p. 33. Matsum. Ind. PI. Jap. II, 2. (1912) p. 147. 



A. amplexicnulis var. japonica, Boiss. in Bull. Herb. Boiss. VII. 

 fl899) p. 786. 



A. Gerardi, (non Bess.) Miq. Prol. Fl. Jap. p. 4. 



This species is nearest to Arabis Fauriei and .4. serrata, still differs 

 from them by having not ca.-spitose stem, more remote serrations and 

 much more elongate and straight siliques. This was also commixed 

 with Arabis ainp/exicaulis and A. Gerardi, but the former is a 

 Himalayan plant having simple undivided hairs on the stem and the 

 latter is an European one with reticulate seeds. I have named after 

 the late II. De BpISSIED who first noticed the difference between this 

 and Arabis amplexicaulis and distinguished this as a variety of the 

 latter. 



Radix perennis interdum columnalis v. cum sobolibus ramosa. 

 Caulis i >i 1 1*-. stellatis v. bifurcatis adpressis pilosus 16— 45 cm. alius teres 

 viridis. Folia radicalia spathulata in petiolem alato-attenuata utrinque 

 aparsim sed Bttpra crebrius Btellulato-pilosa grosse paucique dentata 

 aeutiuscula. Folia eaidina aniplexicaulia oblonga v. elongato-elliptica 

 grosse asqnaliter v. ineequaliter serrata apicc mucronata, basi auricnlata 

 v. snbsagittnta. Racemus polyanthus ebracteatus. Pedicelb' glabri 

 usque 15 (in. longi. Sepala glabra viridia basi leviter saeeata 5 mm. 

 longa 1-1.5 mm. lata margine albida. Petala alba 7-9 nun. longa 

 s|>ai Imlata. Styli 1 mm. longi. Stigma punctat urn, Ovarium glabrum 



V. stellulatn-|)ilosilin. 



