AROIDE^E. 149 



Arisaema Matsudai HAY AT A sp. nov. (Fig. 55). Caulis cum spadice 

 35-40 cm. longus glaber erectus 1-foliatus. Folia cum spatha sequilonga 

 longe petiolata 3-foliolata, foliolis tenuiter inembranaceis, foliolo terminali ovato 

 obloiigo 13 cm. longo 5-6 cm. lato apice acuto ad summum aristato basi 

 acuto vel obtuso niargine integro pinninervio, venulis minute reticulatis, sub- 

 sessili, foliolis lateralibus cum terminali conformibus sed basi obliquis plus 

 minus rotundatis sessilibus, petiolis 10-15 cm. lougis deorsum ad vaginam 

 abeiuitibus ; folia toto glaberrima. Spatha cyliudrica cum lamina 7-8 cm. 

 longa, partibus cylindricis 3 cm. lougis 1 cm. latis, laminis medio subito 

 refracto-recurvis 3 cm. lougis 1| cm. latis apice aristato-acuminatis toto glabris. 

 Spadix J gracilis 4 cm. lougus basi staminifer, partibus staminiferis 1^ cm. 

 longis, (staminibus 2-locnlaribus, loculis globosis) partibus superioribus fili- 

 formibus 2| cm. longis aculeis mollis obtusis instructis. 



HAB. Kuwarusu, leg. Y. MATSUDA, Aprili. 1917, (T. 645). 



Near A. grapsospadix HAY. ; but, differs from it in the nearly sessile 

 leaflets. 



