57 



June 4, 1883, forma a), Sendzu in Isl. Oshiraa {S. Ohnho ! Herh. 1. c. April 

 17, 1887, forma b), Kashiilate mura in Isl. Miyake {S. OJaiho \ Herb. I.e. 

 May 8, J 887, forma b), Oka-gd in Isl. Hachidyo [S. Ohuho ! Herb. 1. c. May 

 1887, forma b) ; Prov. Suo : Yamaguchi {D. Nihai ! Herb. 1. c. May 14, 

 1893, forma b) ; Hokkaido {L. Boehnei' ! Herb. 1. c. forma b) ; Prov. Ishi- 

 KARi : Sapporo {K. Miyabe ! Herb. 1. c. June 1880, forma b). 



A common and widely distributed species on hills, mountains and in 

 forests of Japan. The colour and maculation of the petiole and the colour 

 of the spathe are variable. Leaves either entire or serrate or sometimes 

 in the intermediate state ; such difference of the leaf-margin is not an 

 important character of this species, and this condition also prevails largely 

 in some other Japanese species of the same genus. 



There is a robust sfjccies on Mt. Imano in the southern part of Isl. 

 Shikoku. Its fruit is couical ; and berries are large and measure 1^-1^ cm. 

 or more across, and scarlet when mature ; and the rachis is dark-purple. 

 The leaves are entire and pedatisected as those of Ariscema japonicum P>1. 

 It may be a new species and I like to give it a new name Ariscema macro- 

 carpon mihi. 



Arisaema (Pedatisecta) tosaense Makino sp. nov. 



Ci)rm depressed-globose, densely rooting at the neck. Cataphylls mem- 

 branaceous, the superior one narrowed above, cylindrically encircled the lower 

 portion of petioles. Leaves 2, but rarely 1, long-petiolate, the inferior one 

 larger, pedatisected ; segments 9-19 in the inferior leaf, and 7-13 in the superior 

 leaf, oblong, oblong-lanceolate, or lanceolate, elliptical-lanceolate, or some- 

 times obovato-oblong, acuminate with a narrowly tapering point, entire or 

 denticulate, membranaceous, the middle one largest, petiolulate, cuneate at 

 the base, that of the inferior leaf 4-lOi cm. wide, 15-32 cm. long including 

 the petiolule, the rest sessile and gradually decreasing in size outwards ; 

 veins delicate, numerous, erect-patent, connecting with an intramarginal 

 vein ; petiole erect, vaginate beyond the middle, pallid-green, 20-40 cm, 

 or more long, the free portion about 1-7 cm. long in the superior leaf and 

 8-12 cm. long in the inferior leaf. Peduncle lower than the leaves, or 

 sometimes equalling or rarely more (U- less exceeding them, erect, the free 

 superior portion ^-lOi cm. or rarely about 17 cm. in length. Spathe erect ; 

 the tube convolute and tubuloso-infundibuliform, pallid-green, 5-6^ cm. long, 

 the mouth abruptly truncate and with recurved margins ; the limb fornicately 



