164 Bulletin Jard. Bot . Buitenzorg, Vol. IV. Livr. l. 



distinct species and should be better treated as forms of the same species. 

 The typical A. campanulatus BL. is the form with commonly the smaller 

 dimensions and a subglobose appendix, whilst A. rex Prain commonly 

 represents the form with the larger dimensions and a conoid appendix. 

 Both forms hâve the féminine inflorescence mostly about 1- 1 '/a X as long 

 as the masculine. 



A spécimen from Java (Kendal), cultivated in the Buitenzorg Gardens, 

 flowering August 1Q20, resembled very much HoOKER's plate of Arum 

 cainpanulatum RXB. mentioned above (with the féminine inflorescence about 

 4 X as long as the masculine) but was distinguished by its strongly deviating 

 proportions: Spadix 50 cm. long; féminine inflorescence at least 8 X as 

 long as the masculine, cylindrical, 25 cm long, 10 cm. thick; masculine 

 inflorescence proportionally very short- and thick-obconoid, hère and there 

 even nearly horizontally spreading, at best 3 cm. long, the base as thick 

 as the féminine inflorescence, the apex 20 cm. thick; appendix oblate in 

 gênerai aspect, 25 cm. long including the masculine inflorescence, the 

 thickness varying from 30 to 35 cm.; for the rest (colours, shape of spathe, 

 etc.) as commonly. 



Àmorphophallus Decus silvae, BaCKER & V. A. V. R., this Bull., 

 \\ J920, 369. 



The plates belonging to this species, which were not yet ready when 

 my previous paper on Malayan Araceae was published, are accompanying 

 this number. (Plates 2 and 3). 



The native on one of the plates is the discoverer of the species. 



Àmorphophallus Lôrzingii, V. A. V. R., this Bull., \\ 1920, 367. 



This species seems to be rather variable in dimensions and colour and 

 shape of the markings. A spécimen gathered by the same collector at 

 the same locality (No. 5702, 27 May 1918) is, according to the field notes, 

 distinguished from my previous diagnosis as follows: Pétiole to 2 m. high. 

 Peduncle pale-rosy, upward pale-brown with paler spots. Spathe: tube 

 inside dark-fiesh-coloured, outside milk-white, longitudinally pale-red-striated 

 in the upper part; throat inside milk-white, outside pale-green ; limb pale- 

 green, outside horizontally pale-red-striated near the margin. Spadix: ovaries 

 dark-flesh-coloured, with a milk-white stigma; appendix laterally compressed, 

 '/4 as thick and '/2 as broad as long, milk-white. 



Àmorphophallus obovoideus, V. A. V. R. 



Foliorum petiolus . . ; lamina .... Cataphylla 2—3, intimum longis- 

 simum, lineari-lanceolatum, + 22'/2 cm. longum. Pedunculus 70 — 75 cm. 

 longus, relative gracilis, pallide caeruleo-viridis, maculis magnis, oblongis, 

 perpallide viridibus, in média parte caeruleo-punctatis, superioribus saepe 

 confluentibus et epunctatis, in spatham continuatis ornatus. Spatha e tube 



