— 17 — 



4. Asiasarum F. Maekawa, gn. nov/ 3 - 1 (type Asiasarum 

 Sieboldii vel Asarum Sieboldii Miquel). 



2. Aristolochiacecc Lindley. 



1. Apama Lamarck. 



2. Aristolochia L. 



3. Bragantia Loureiro. 



4. Cyclodiscus Klotzsch. 



5. Euglypha Chodat. 



6. Hocquartia Dumortier {Siphisia Rafinesoue). 



7. Holostylis Duchartre. 



8. Pararistolochia Hutchinson & Dalziel {Aristolochia 



Sect. Polyanthera Bentham & Hooker). 



9. Thottea Rottbcell. 



3. Sarumatacea Nakai, nov. fam. 

 1. Saruma Oliver. 



partim liber. Stamina 12 basi tub: perianthii affixa et supra discum adharentia et 

 in basi columns stylorum libera et erecta, fere stylis a?quialta ; filamenta subulata; 

 anthera? bina? sublaterali-extrorsae ; connectivum productum sed inappendiculatum. 

 Stylus erectus anguste fistulosus apice 6-lobus, lobis brevibus recurvis intus sul- 

 catis et apice triangulari-stigmatosis. Ovula in quoque ovarii loculo biserialia 

 anatropa horizonali placentis axillaribus affixa, micropylo infero. Testa seminum 

 fusca nitida. Funiculus in fructu 

 carnosus et sulcum ventralem semi- 

 num occupat. 



Genus monotypieum. Typus : Ja- 

 ponasarum caulescens. (Asarum cau- 

 lescens Maximowicz). 



This genus is closely allied to 

 Asarum, but in the latter, lobes of 

 perianth are free from the beginning 

 upright and thick, stamens has long 

 appendages, and column of styles is 

 solid. In the genus Hcterotropa, ovary 

 is semisuperior, the perianth makes a 

 distinct tube whose inner surface is 

 elevated netway and make a oral ring 

 at the mouth, style are nearly free, 

 and stigma is situated at the outer 

 side of style. 



(3) Asiasarum F. Maekawa gen. nov.D 



Perennis. Rhizoma repens, internodiis abbreviatis. Squamas Z-o. Folia 2 al- 

 terna sed valde approximata petiolata annua herbacea vel crassiuscula in gemma. 



Expl. Fig. I. 



A. Flower of Japonasarum. 

 A^ Stamen of Japonasarum. 



B. Flower of Asarum europtsuni. 

 Bj. Stamen of Asarum curopctum. 



All of them were sketched from 

 the living materials, but are shown 

 more or less diagrammaticallv. 



1) Asiasarum auctore FrMio Maekawa. 



