NEW OR NOTEWORTHY MALAYAN ARACEAE 2. 



BY 



Capt. C. R. W. K. VAN Alderwerelt van Rosenburgh. 



With plates 2 and 3. 



Wherever the coiitrary has not been mentioned the following diag- 

 noses were made after dried material and the descriptions of the colours 

 were taken from the field notes of the collectors. 



Aglaodorum Griffithii, SCHOTT, Gen. Aroid., tab. 58; Engl., in 

 Pflzrch, LXIV (23 De), Arac.-Philod.-Anub , 34, fig. 16. 



Engler says in the diagnosis of the genus Aglaodorum given in 

 Pflanzenreich „staminodia prismatica 1—3 ovaria circumdantia". SCHOTT 

 too speaks of „neutri prismatici" and draws them in his table mentioned 

 above whilst they are not represented in Engler's fig. 16. 



Since, when making the artificial key to the détermination of the 

 aroideous gênera, occurring in my previous paper on some New or 

 Noteworthy Malayan Araceae, 1 had not yet set eyes on a spécimen of 

 the species, 1 took the présence of staminodes as a generic character from 

 the said authors. 



Now I hâve had the opportunity to examine a living spécimen cultiv- 

 ated in the Buitenzorg Gardens, flowering and fruiting November 1920; 

 this spécimen agrées exactly with Engler's fig. 16 and has no staminodes 

 encircling the ovaries but it has the lower stamens stérile, which, however, 

 are in aspect not différent from the fertile ones when seen from above. 



Engler says nothing about the colours. The spécimen mentioned 

 had the leaves green, the peduncle green in the upper part, yellowish- 

 green towards the base, the spathe green, the stalk of the spadix ivory- 

 white, glossy, the ovaries white, glossy, with a bright-yellow, glossy stigma, 

 the masculine inflorescence ivory-white, opaque. 



Amorphophallus campanulatus (RXB.), Bl., in DEC, Descr. Herb. 

 Tim., in Ann. Mus. Hist. Par., !II, 366; Bl , in Rumph., I, 139, tab. 32, 

 33; Engl., in Pflzrch, XLVlll (IV, 23 C), 76; A. virosus, N E. Br., in Bot. 

 Mag., tab. 6978; 4. rex, PRAiN, Hk. F., Flor. Br. 1., VI, 514; ENGL., 1. c, 75, 

 fig. 27; Arum campaniilatum, RxB., Hk., in Bot. Mag., tab. 2812. 



A. campanulatus Bl. and A. rex Prain are running into each other 

 by intermediates so gradually that they cannot be maintained as two 



