241 



Ariscema MART. 



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

 basi squamis vaginiformibus 3-4 involuta, squamis hyalinis tenuissimis sursum 

 purpureo-maculato-punctatis extimis 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 







instructa, partibus pinnatis vel pinnatifidis, pinnis 

 partis singulas secundum latere interiore dispositis a 

 se 1cm. remotis infimis longissimis lanceolatis 9cm. 

 longis 18 mm. latis apice acuminatissimis sessilibus 

 margine tenuissime purpureo-marginatis minute 

 denticulato-crenulatis, pinnis superioribus minoribus, 

 petiolis 35 cm. longis vaginiformibus, partibus vagini- 

 formibus 30cm. longis scapum amplectantibus. Scapi 

 singuli cum spatha 35 cm. longi vagina petioli in- 

 voluti. Spatha suberecta deorsum tubiformis 6 cm. 

 longa in explicate 2 cm. lata, partibus tubiformibus 

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

 acuminatissima basi plus minus contracta. Spadix 

 florum masculinorum cylindricus sessilis l^crn. longus 

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

 fioribus dense dispositis, appendice suberecta longe 

 exserta plus minus recurva 6 cm. longa basi 2 J mm. lata glabra lasvi columnar! 

 sursum gradatim attenuata subfiliformi apice viridi. Flores $ : dense dispositi ; 

 stamina 3-aggregata, filamentis brevissimis ^ mm. latis ^ mm. longis, antlieris 

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



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



Near Ariscema Thuribergii BLUME, but differs from that by the much 

 shorter not fornicate spathaa which are completely tubiformed towards the base. 

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

 is imbricate. 



Arissema consanguineum SCHOTT ; HOOK. f. Fl. Brit. Ind. VI. p. 505. 



Fig. 86, Arisaama 

 brachyspatha HAYATA; a, 

 a male spadix ; b, a male 

 flower with two stamens; 

 c, another male flower 

 with three stamens. 



