AROIDEA'. 



241 



Ariscema MART. 



Arisaema brachyspatha HAYATA sp. nov. (Fig. 86). Folia cum scapo 

 basi squarnis vaginiformibua 3-4 involuta, squamis liyalinis tenuissimis sursum 

 purpureo-maciilato-punctatis extiinis 3cm. longis in explicate 18mm. latis apice 

 rotundatis intimis longissimis 15cm. longis apice acuminatis basi vaginiformibus. 

 Folia solitaria lamina bipartita, partibus basi a se 

 angulo 80 divaricatis, inter partas foliolo uno sessili 

 instrueta, partibus pinnatis vel pinnatifidis, pinnis 

 partis singulfe secundum latere interiore dispositis a 

 so 1 cm. remotis infimis longissimis lanceolatis 9cm. 

 longis 18 mm. latis apice acurninatissimis sessilibus 

 margine tenuissime purpureo-marginatis minute 

 denticulato-crenulatis, pinuis superioribus minoribus, 

 petiolis 35 cm. longis vaginiformibus, partibus vagini- 

 formibus 30cm. longis scapum aniplectantibus. Scapi 

 singuli cum spatha 35 cm. longi vagina petioli in- 

 voluti. Spatha suberecta deorsurn tubiforrnis 6 cm. 

 longa in explicato 2 cm. lata, partibus tubiformibus 

 2-3 cm. longis, lamina 3cm. longa apice caudato- 

 acuniinatissima basi plus minus contracta. Spadix 

 florum masculinorum cylindricus sessilis l^cm. longus 

 (exceptis appendicibus) 3J mm. latus (cum floribus), 

 floribus dense dispositis, appendice suberecta longe 

 exserta plus minus recurva 6 cm. longa basi 2^ mm. lata glabra Itevi colurnnari 

 sursum gradatim attenuata subnliformi apice viridi. Flores : dense dispositi ; 

 stamina 3-aggregata, nlanieutis brevissirnis |nim. latis -^ mm. longis, antheris 

 reniformibus mm. latis ^ mm. longis apice mucronatis basi cordatis 2-locularibus. 



HAB. Fokien : Kozan, leg. S. NAGASAWA, Aprili. 1910, (No. 216). 



Near Arisc&ma Thuiibergii BLUME, but differs from that by the much 

 shorter not fornicate spathas which are completely tubifornied towards the base. 

 In A. Thunbergii, the spatha is cleft on one side, and the margin of the cleft 

 is imbricate. 



Arisaema consanguineum SCHOTT; HOOK. f. Fl. Brit. Lid. VI. p. 505. 



Fig. 86, Ariscema 

 brachyspatha HAYATA ; a, 

 a male spadix ; b, a male 

 flower with two stamens ; 

 c, another male flower 

 with three stamens. 



