Amorphophalhcs.] cl. AROiDEiE (brown). 145 



leaflets unequal, the terminal largest, entire, decurrent. Peduncle 

 short or tall. Spathe variable in form ; tube carapanulate or funnel- 

 shaped, rarely subcylindric ; limb short and frill-like, or produced and 

 ovate, expanded, concave or hood-like. Spadix longer or shorter than 

 the spathe ; tlowering part not exceeding the tube of the spathe ; 

 appendix subglobose, ovoid, cylindric, fusiform or tail-like, smooth, 

 rugose, or rarely hairy. 



Species about 50, coniined to the tropics of the Old World. 



I cannot separate Hydrosme as a genus from Amorphophallus as Engler has 

 done, for in habit, form, and structure of the infloresence there is absolutely no 

 distinction to be found. The only character that can be claimed to separate them 

 depends entirely upon' the union of the funicle with the body of the ovule ; if the 

 funicle is adnate to the body of the ovule so as to form a raphe it constitutes an 

 Sydrosme ; if it is not adnate to the body of the ovulethen it is an Amorphophallus, 

 surely too slight and unimportant a difference to form a genus upon, especially where 

 all other parts of the inflorescence are in such a variable and unstable condition 

 among the various species as in Amorphophallus, which, as here understood, is a 

 very natural and easily recognised genus. 



Spathe connate into a tube below, hooded above . . \. A. Ulliotii. 



Spathe convolute in the lower part. 



Appendix of spadix short and thick, subglobose ovoid, 

 or fusiform-ovoid, more or less rugose ; ovar}' 

 with a distinct style. 

 Spathe 3|^-6 in. long, obliquely campanulate, open 2. A. leonensis. 

 Spathe 7-13 in. or more long, hooded in the upper 



part . . . . . . . . 3. ^. dracontioides. 



Appendix of spadix cylindric, fusiform, or tail-like. 



Style none, except in 10, A. Preussii ; 11, A. laxi- 



florus ; 19, A. maculatus, and 20, A. gallaensis. 



'■'Spadix about equalling or shorter than the spathe. 



Spathe lobed (abnormally ?) at the apex . . ^. A. Teuszii, 



Spathe not lobed at the apex. 

 Margin of spathe undulated. 



Flowering part of the spadix about equalling 

 or longer than the appendix; spathe- 



tube longitudinally ribbed inside . 5. A. S chive infurt hit. 



Flowering part of the spadix shorter than 

 the appendix. 

 Spathe-tube about 1| in. in diam., smooth 



inside; spadix 3^-5^ in. long . 0. A. mossamhicensis. 



Spathe-tube about 3^ in. in diam., covered 

 with short filiform processes insire ; 

 spadix 6-6f in. long . . . 7. A. Goetzei. 



Margin of spathe not undulated. 



Flowering part of spadix as long as the 



appendix . . . , . .8.-4. Barteri. 



Flowering part of spadix much shorter tlian 

 the appendix. 

 Spathe dark violet . . . . \). A. gratus. 



Spathe yellowish-green, purple at the 



base ...... 10. A. Preussii. 



-•"'■'Spadix longer than the spathe. 



Anthers sparsely scattered . . . . . 11. ^. laxijlorus. 



