— 18 — 



duplicato-corrugata. Flos unicus terminalis pedicellatus, trimerus. Calyx carnosus 

 inferne tubulosus superne trilobatus ; tubus urceolatus extus glaber intus longi- 

 tudinaliter multi-costatus fauce angustatus saepe constrictus sed nunquam annu- 

 latus. Calycis lobi valvati ovati patentes vel erecto-patentes. Petala nulla. 

 Stamina 12 vel 6, ad faciem ovarii supernem inserta homomorpha. Filamentum 

 anthera 1-2-plo longius complanatum, anthera parva, loculis parallelis extrorsis, 

 connectivo crassiusculo inappendiculato. Ovarium semi-superum, infeine obconicum 

 superne conicoideo elevatum 6-loculare, quoque loculo ovula biserialia in placenta 

 basilari-axiale disposita, seriis cum 3-4 ovulis constitutis. Ovula recta anatropa ; 

 raphe ventrale. Styli 6 raro 3 breves ventrale canaliculati prope apicem stigmate 

 ovoideo vel globoso ornati apice bilobulati. Capsula carnosa cum calyce persis- 

 tente obtecta putrefacta sed secus suturas ventrales simul loculicide dehiscens. 

 Semina Crustacea glabra ventre cum funiculo carnoso obtegentia. 

 Typus generis : Asiasarum Sieboldii (Miotjel) F. Maekawa. 



This new genus has closer affinity with Heterotropa than with Asa/rum, having 

 the calyx tube, separate and not columnous styles and perfectly six-celled ovary. 

 But it can be clearly distinguished from the latter by its long-stalked stamens 

 (filaments are at least 1-2 times longer than anther cells), non-existence of ring in 

 the mouth of calyx tube and annual leaves folded in bud. In the Far Eastern 

 region of Asia, there are 4 species belonging to this genus, which are separable 

 each other by the following key : 



'Folia in primo hiemis etiam persistentia crassiuscula supra atro-viridia atque 

 albo-maculato-variegata. Calycis lobi planati acuti. Filamenta antheris 



aequilonga. Asiasarum maculatum (Nakai) F. Maekawa. 



Folia in auctumno jam emarcida textu herbaceo membranacea viridia nunquam 



variegata. Filamenta antheris 1.5-3-plo longiora. 2 



'Styli 3. Stamina 6. Folia minora 4-5 cm. longa ambitu pentagono-ovato cor- 

 data atro-viridia. Calycis lobi ovato-cuspidati apice distincte recurvato-recti. 



Asiasarum dimidiatum (F. Maekawa) F. Maekawa 



Styli 6. Stamina 12. Folia majova nunquam atro-viridia ovato-cordata vel 



semireniformia. 3 



/Calycis lobi ovati apice acuminati rectim reflexi primo erecto-patentes in fructu 

 horizontali patentes. Folia saepe acuminata glabra vel subtus ad venas 

 sparse ciliolata, petiolo absque margine canaliculi glabro. 



Asiasarum Sieboldii (Miquel) F. Maekawa. 



| Calycis lobi ex basi recurvati, late ovati vel ovato-reniformes apice acuti vel 



obtusiusculi deplanati crassi. Folia acuta vel obtusa. 4 



'Calycis lobi apice saepe obtusi. Folia saepe cordato-reniformia apice acuti- 

 uscula vel obtusa, subtus glabra vel sparse ciliolata. 



.Asiasarum heterotropoides (Fr. Schmidt) F. Maekawa. 



(Calycis "lobi apice acuti. Folia ovato-cordata apice acuta, subtus dense hirsuta 

 vel glabriuscula. 5 



'Folia utrinque molliter hirsuta. Petioli scabro-pubescentes. 



Asiasarum heterotropoides var. seoulense (Nakai) F. Maekawa. 



Folia saepe glabriuscula. Petioli saepe glabri. 



Asiasarum heterotropoides var. mandshuricum (Maxtmowicz) 



F. Maekawa. 

 1) Asiasarum maculatum F. Maekawa comb. nov. 



Syn. Asarum maculatum Nakai in Fedde, Repert. Sp. Nov. Regn. Veget. XIII, 

 p. 267 (1914), in Bot. Mag. Tokyo XXVIII, p. (519) (1914), Veg. Isl. Quelpaert p. 



V 



M 



\ 



