80 D. Prain — Flora of Narcondam and Barren Island. [No. 2, 



post anthesiii caduca, spongiosa, rugosa, valleculosa, lutea et brunneo-maculata : 

 bacca 1— 2-spernia, 0"75 poll, longa, hac 0'25-0'35 poll, lata, ovata, versus apicem 

 angustata, carnosa, lutea ; seminibus pendulis ovatis, triente basilari e funiculo 

 incrassato spongiosis, ceteram embryone corueo semini subconformi cartilageneis. 



This species resembles the Java form, or a variety, of Amorpliophallus campan- 

 ulatus (A. campanulatus Blume, Bumphia, i, 139. t. 32, 33, as opposed to Arum cam- 

 panulatum, Boxb , Hort. Beng., 66) in the conic-pyramidal sbape of the appendix, but 

 differs in other respects, more particularly in the leaf. It agrees with A. virosus 

 Brown (Bot. Mag., 697S) in having the male and female inflorescence of about 

 equal length, but in other respects is very distinct, for A. virosus has the dense 

 flowered turbinate male inflorescence, and the short oblong appendix character- 

 stic of Boxburgh's Arum campanula-turn of which it is probably only a form. The 

 following brief diagnosis f may assist in indicating how very distinct the present 

 plant is from the forms hitherto known :• — 



Betiole hardly verrucose ; male flowers disposed spirally 

 on an inflorescence not wider than the female : yellow 

 pyramidal appendix (twice as long as broad, and) one- 

 half longer than the combined inflorescences : (male and 

 female inflorescences of equal length ; spathe green con- 



colorous) A. rex 



Petiole very verrucose ; male flowers disposed spirally on an 

 inflorescence much wider than the female : purplish- 

 brown apjDendix not so long as the combined inflore- 

 scences : — 



Male and female inflorescences of equal length,spathe 

 green suffused with purple, externally white spotted 



(oblong appendix not longer than broad) A. virosus. 



Male inflorescence much shorter than the female, spathe 



purple concolorous A. campanulatus. 



Oblong appendix, not longer than broad Arum campanulatum 



Boxb. (India). 

 Pyramidal appendix twice as long as broad Amorphopliallus campan- 

 ulatus Bl. (Java). X 



■)• In connection with this, it may be mentioned that the Amorpliophallus from the 

 Coco Group, mentioned (Journ. As. Soc, Beng., Ix, 2, 333) as related to A. bulbifer and 

 A. titberculiger, has since flowered at Calcutta, and has proved, as was then anticipated, 

 to be a very distinct species. As the authors of the other species, have indicated by 

 the specific name the tubercle-bearing habit of the species, the writer proposes for 

 this one the name ' Amorphophallus oncophtiltjs ' Pram. The diagnosis between 

 it and the two species for which it might be mistaken, is as follows : — 

 Scigma sessile, spathe unconstricted, appendix equal in length 

 to the combined inflorescences : — 



Female inflorescence shorter than the male A. titberculiger . 



Female inflorescence as long as the male A . bulbifer. 



Style distinct, spathe constricted slightly opposite the male 

 inflorescence, appendix twice as long as the combined in- 

 florescences A. oncophyllus. 



X As this paper has been passing through the press, the writer has learned 

 from Sir Joseph Hooker, that he identifies A. rem with Blume's Java A. campanulatus. 



