74 



patent, light green, uninerved, glaLrons, herbaceous, more or less thickish ; 

 the outer lobes oblong-lanceolate, obtuse ; the inner lobes very slightly longer 

 than the outer ones, oblong-spathulate, rounded at the apex. Stamens 6, 

 much shorter than the perianth, erect, but curved outwards above ; filament 

 narrow, glabrous, light green ; anther minute, with whitish pollen ; the 

 oppositisepalous ones broadly orbicular, auriculate at the base, the cells placed 

 around the short connective and faced laterally ; the oppositipetalous ones 

 rounded, the cells collateral towards the front of" the connective ^nd appar- 

 ently introrse. Rudimentary style very minute, shortly pyramidal, 3-lobed, 

 connate beluw. $ : Spike pendulous, 1-2 to the leaf-axil, simple or rarely 

 few-branched, glabrous, laxly flowered ; rachis slender, a little flexuous, 

 triquetrous with smooth edges, attaining about 27 cm. in length. Flower 

 small, very shortly pedicellate, 2-bracteate, placed in the right angle to 

 the rachis, solitary or rarely binate, about 5 mm. across ; bracts minute, 

 sharply subulate, membranaceous. Perianth 6-parted, patent, light green, 

 glabrous, thickish ; the outer 3 linear-oblong, obtuse ; the inner 3 very slightly 

 broader than the outer ones and clavately dilated at the apex. Rudiment- 

 ary stamens 6, minute, clavate, 2-fid at the top, opposite to the perianth- 

 lobes and situated at their bases. Style erect, shorter than the perianth, 

 divergingly 3-lobed at the top ; stigma slightly dilated, longitudinally groov- 

 ed. Ovary terete and triangular with entire edges, shallowly 2 grooved 

 in faces, longer than the perianth, 31-41 mm. in length. Capsule ascending 

 on the pendulous rachis, shortly pedicellate, emarginate and crowned with 

 persistent perianth at the apex, broadly rounded at the base, 3-winged, 

 1^-2 cm. long, 1-1^ cm. across, smooth, green, margined with thin narrow 

 and smooth edges, with subcoriaceous thin carpels. Seeds 2 in each 

 loculament, compressed, rounded to obovate-elliptical, winged above ; wing 

 elliptical to oblong, rounded at apex, thinly membranaceous, brown. 



Dioscorea saliva Miq. Prol. Fl. Jap. p. 323, ex parte ; Franch. et Sav. 

 Enum. PI. Jap. II. p. 47, ex parte; Kanitz Anthoph. Jap, p. 9, non Linn. 



Dioscorea sp. Makino in Bot. Mag., Tokyo, II. 1888, p. 26. 



Kai, vulgo ToJcoro Kasmpf. Amcen. Exot. p. 827. 



Hab. Prov. Tosa : Sakawa {T. Makino ! July, Aug. Oct. 1887), Ogawa- 

 mura {T. Malcino ! July 22, 1887), Nanokawa {K. Watanabe ! Herb. So. 

 Coll. Imp. Univ. Tokyo, July 15, 31, 1889) ; Prov. Musashi : Tokyo {T. 

 Malcino ! Aug. 6, 1893 ; li. Yatdbe and Z. Matswmura ! Herb. 1. c. July 6, 

 1879), Omiya-hachiman {R. Yatabe and Z. 3Iatsumura ! Herb. 1. c. July 6, 

 1879), Dokwan-yama (li. Yatabe and Z. Matsumura ! Herb. 1. c. Sept. 28, 



