146 AEOIDEJE. 



lanceolato-spathulata 12 inm. longa 4 mm. lata apice obtusissima basi attenuata. 

 Stamina 6 basi segmentorum affixa, filamentis 1 cm. loiigis filiformibus glabris, 

 antheris liiiearibus 3 mm. lougis 1 mm. latis apice obtusis basi alte 2-lobatis. 

 Ovarium triangulari-obconicuni vel obcordatum 6 mm. longum totiusque latum, 

 stylo 15 mm. longo apice capitate paltato rotundato 1^ mm. iii diametro. 



HAB. Bonbonzan, leg. B. HAYATA et S. SASAKI, Mai. 1917. 



Near Heloniopsis umbdlala, but differs from it in the leaves which are 

 triangularly acute and in the much longer anthers. 



Aroidese. 

 Ariscema MART. 



Arissema qninquefoliola HAYATA sp. uov. (PI. Vtl). Caulis cuiu 

 spadice 40-50 cm. longus basi vaginatus glaber 2-foliatus. Folia dua alterna 

 cum spadice eequilouga pedatim 5-foliolata, foliolo tarminali ovato-lanceolafej 

 11-14 cm. longo 3-3 1 cm. lato apice acuto subito longe caudato ad summum 

 arista instructo basi acuto ol^tuso rnargine subintegro vel eroso glabro teuuiter 

 membraiiaceo, petiolulo centi-ali 2^ cm. lougo glabro, foliolis lateralibus plus 

 minus minoribus conformibus basi plus minus obliquis, patiolulis Ijrevioribus ; 

 petiolis communibus 10-12 cm. longis glabris 'basi auriculis vaginarum in- 

 structis. Spatha cyhndrica 8 cm. longa 13 mm. lata glabra, lamina oblouga 

 apice triaugulari-acuta vel acuminata medio subito refracto-recurva. Spadix 

 gracilis 7 cm. longus basi deorsum staminifer, partibus staminiferis 2| cm. 

 lougis ; partibus superioribtis gracillimis glabris apice breve penicillatia. 

 Stamina secus partem iuferiorem spadicis consparsa, filamentis J mm. longis ; 

 loculis antherarum 3-7 secus filamentum spicatim dispositis vel ad apicem 

 filamentorum aggregatis. 



HAB. Ako, Kuwarusu, leg. Y. MATSUDA, Jan. 1918; Daibusan, Jan. 

 1916. 



Remarkable for its pedately 5-foliolate leaves. 



