166 Bulletin Jard. Bot. Buitenzo rg, Vol. IV. livr. i. 



Sumatra {Dell, Sibolangit, ). A. LÔRZING No. 5522, primeval forest, 

 ait. 400 m., 17 February 1918). 



Amorphophallus incurvatus, V. A. V. R. 



Foliorum petiolus ; lamina Cataphylla ... Pedun- 



culus + 75 cm. longus, pro ratione gracilis, viridis, pallide viridi-maculatus. 

 Spatha e basi convoluto-obconoidea navicularis, postice excurvata, apicem 

 versus super spadicem falcato-incurvata, explanata ovata, + 11 cm. longa, 

 supra basiu truncato-rotundatam 4'/2 cm. lata, apice acuta, extus lurido-vio- 

 lacea; pallide viridi-maculata. Spadix + 7 cm. longus, parte basali brunnes- 

 cens, parte apicali pallide griseus, subalbus; inflorescentia feminea cylindra- 

 cea, P/4 cm. longa, in sicco + 4 mm. crassa; ovaria brevia. subprismatica, 

 4-angulosa, apice truncata, 1-ovulata; stylus angusTe cylindraceus, quam 

 ovarium paullo brevior, basi vix conoideo-incrassatus; stigma capitatum, 

 parvum, leviter sulcatum; inflorescentia mascula subcylindracea, fere 2'/4 cm. 

 longa, in sicco supra basin + 4 mm. crassa, apice et basi paullo contracta ; 

 appendix subcylindracea, + 3 cm, longa, in sicco + 4 mm. crassa, 

 basi paullo contracta, apice rotundata. 



Sumatra (Mt. Koerintji, in forest, ait. 1770 m., H. A. B. BuNNEMEIjER 

 No. 8835, 15 March 1920). 



Amorphophallus variabilis, BL , in Rumph,, 1, 146, tab. 35, 37 H; 

 V. A. V. R., this Bull., P, 1920, 367. 



This species bas the pétiole, peduncle and spathe so exceedingly var- 

 iable in colour and shape of the markings, that it is practically impossible 

 to define it in a diagnosis. Sometimes the colour is entirely equally pale- 

 green without a single paler or darker point or spot, but in most cases 

 there are a tew scattered to numerous crowded whitish, purplish, dark- or 

 olive-green to reddish-black points and (or) spots, and in still other cases 

 the colour is equally olive-green to purple with some paler or (and) 

 darker points or spots. 



Arisaema ramulosum, V. A. V. R. 



Trisecta. — Tuber parvum, 1— 2-foliatum. Foliorum petiolus 20-40 

 vel saepius 40 — 60 cm. longus, usque ad médium vel paullo longius vaginatus, 

 cum vagina viridis vel subviridi-griseus, plus minusve conspicue obscure mar- 

 moratus, maculis obscuris rubro-puncticulatis ; vagina apicem versus sensim 

 arcuata vel apice obtuse rotundata; lamina 3-foliolata ; foliola supra obscure 

 viridia, nitentia, subtus pallidiora, nitidula, omnia acutiuscule vel ob- 

 tusiuscule acuminata, breviuscule, graciliter apiculata; foliolum intermedium 

 petiolulatum, late rhomboideo-ellipticum, 8-^20 X 4'/2—ll cm., aequiiaterum, 

 basi cuneatum vel rotundato-cuneatum ; foliola lateralia sessilia vel breviter 

 petiolulata, quam foliolum intermedium paullo minora ad paullo majora, plus 

 minusve inaequilatera, postice quam antice paullo latiora, basi antica cune- 

 ata, basi postica rotundato-cuneata vel rotundata. Pedunculus quam petiolus 

 brevior, 17 '/a — 30 vel saepius 30—40 cm. longus, pallide viridulus, sursum 



