243 



110 leaf, it is a little doubtful if it really beloiig to tlie same species. Either 

 type or original description I have nevcr seen. So far as tlie description given 

 liy HooivER is concerned, our phint is highly ijrobably referable to this species. 

 The above description is drawn up from a set of iierfect specimens collected 

 in ^lt. Arisan. 



Arissema formosana Hayata n. n. (Fig. 87). Ariscema alienatum Schott 

 var. formosana Hayata Mater. FL Formos. p. 371. 



Very uear A. alicnatum Schott. { = A. concinnum Schott Bot. Mag. t. 5914); 

 but differs from it by the very much more slender appendex, and by tlie much 

 morc densely aiTanged male and female flowers. 



Hau. ilt. Arisan : a Funkiko usc[ue ad Arisan, 4700- 

 7500 ped. alt., leg. B. Hayata et Takeo Ito, Mart. 1914. 



The original specimen of Ariscema alienatum var. 

 formosana Hayata is rather imperfect and therefore it 

 is at preseut difficult to identify the present phxnt 

 with the original ; but in all probability, I think the 

 Ariscema in question is identical with the former. As 

 the original description is based upon an imperfect 

 specimen, it is my desire to give here anotlier exliaus- 

 tive description drawn from perfect material. Tlie 

 segments of the leaves are very variable in number, 

 shape and size. Tliey vary from 7 to 11, from lanceolate 

 to narrow linear, from 8 cm. to 25 cm. in length and 

 from 4mm. to 4cm. in breadth. Petioles are some- 

 times snake-colored, but sometimes are not at all 

 maculated. The ajipendices of the spadix are usually 

 softly setose, but sometimes f[uite smooth. 



Tuber depresso-globosum 25 cm. in diametro 1 cm. 

 longum, radicibus facie superiore tuberis sitis. Folia siugula, petiolo 76 cm. 

 longo basi cum vaginis 15 mm. lato purpureo-marmoreo, vaginis 2-3 dispositis 

 tenuiter membranaceis, himina radiatim 13-secta (interdum 7-11), segmentis 

 lanceolatis vel obovato-hxnccohitis 20cm. longis 4cm. hxtis apice caudato-acumi- 

 natis (acurainibus 1-2 cm. longis ai^ice riliformilius) basi gradatim attenuatis 



Fig. 87, Arismnia 

 formosana IIayata; a, 

 a niale spadix ; b, a 

 female siiadix. 



