131 
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-ublong, acuminate with a narrowly tapering point, entire or 
denticulate, membranaceous, the middle one largest, petiolulate, cuneate at 
the base, that of the inferior leaf 4-10 j 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 or less exceeding them, erect, the free 
superior portion i-10J cm. or rarely about 17 cm. in length. Spathe erect; 
the tube convolute and tubuloHO-infundibuliform, pallid-green, 5-6^ cm. long, 
the mouth abruptly truncate and with recurved margins ; the limh fornicate]y 
incurved, ovate, oblong-ovate, or lanceolate-ovate, gradually attempted above 
into a long slender tail longer than the tube, 13-32 cm. long ， thin, pallid- 
green. Spadix unisexual, subconico-cyliDdrical, subsessile, nearly 2 cm. long, 
many-flowered ; the appendage erect，much longer than the spadix, exceeding 
the mouth of the spathe-tnbe, shortly stipitate ， cylindrical-clavate with a 
rounded apex, truncate at the base. Male flowers shortly stipitate, 4-6- 
androus. Female flowers sessile ; ovary obovate, witli a minute and sessile 
stigma at the top. 
Hcib. Prov. Tosa in Isl. Shikoku : Mt. Yokogura (T 7 . Malzino ! June 
4, 1887, June 1893); Idzami at foot of Mt. Torigata (T. Mohino ! May 
22 ; 1889). 
This species is found in Is】. Shikoku as quoted above. It is allied to 
Ariscema serratum Schott (incl. A. japo7iicum Bl.), distingmshecl principally 
from the latter by the colour of the petiole and spathe, and long caudate 
spathe-limb. Leaves occur in either entire or denticulate state, as in those 
of Ariscema serratum Schott (including A. japonicum BL), A. amurense 
Maxim, and A. Sazensoo Makino { = A. sikokmnum Franch. et Sav.). 
Arissema (Pedatisecta) amurense Maxim. Prim. FI. Amur. p. 264; 
Engl, in DU. Monogr. Pbanerog. II. p. 549 ; Ivorshins. in Act. Hort. Petrop. 
XII. p. 392. 
Corm depressed -globose, tnrioniferous; turiones globose, about pea-sized. 
Cataphylls thinly membranaceous. Leaves tall, 2, or sometimes 1,long- 
petiolate，racliately pedatisected with 5 — (rarely 6-) segments ; segments ovate- 
oval to obovato-lanceolate, acuminate or shortly acuminate，entire {forma a. 
