Tas. 5187. 
AMORPHOPHALLLUS pvstvs. 
Smooth-headed Amorphophallus. 
Nat. Ord. ArorpE®.—Mona@cr1a Monanpria. 
Gen, Char. Spatha basi convoluta; limbo plano, patente. Spadix inferne 
continuo androgynus, genitalibus rudimentalibus nullis, appendice sterili elon- 
gata leevigata v. depresso-dilatata granuloso-verrucosa. Anthere distincte, fila- 
mento brevissimo, loculis duobus oppositis, apice poro duplici dehiscentes. Ovaria 
plurima libera, bi-tri-quadrilocularia. Ovu/a in loculis solitaria, basilaria, ana- 
tropa. Stylus distinctus v. nullus. Stigma capitatum, indivisum vel emarginato- 
aut depresso-lobatum. Bacce mono-oligosperme. Semina albuminosa(?). Em- 
bryo (?).—Herbee Indice ; tubere radicali, carnoso ; scapo radicali, brevi ; foliis 
serotinis, subsolitariis, bipinnatifido-decompositis. Endl. 
AMORPHOPHALLUS dudius ; spathe lato-infundibuliformis limbo subpatente ob- 
liquo acutiusculo undulato-crispato, spadice subcylindraceo infra apicem 
dilatato, appendice conico-rotundato levi. 
AMORPHOPHALLUS dubius. Blume, Rumph. v. 1. p. 142. Schott, Synops. Aroid. 
p. 38. 
Dracontium Zeylanicum ramoso folio caule ex viridi et flavo variegato aspero. 
Herm. Parad. Bat. p. 89. 
Scuena. Hort. Malab. p. 35. f. 18. 
_ This is a very singular Aroideous plant, which we owe to our 
friend Mr. Thwaites, who sent the tubers from Ceylon. It 
will be at once seen that in all essential generic characters it ac- 
cords with the still more remarkable species of this family which 
we published under the name of Arum campanulutum, at 'Tab. 
2812 of this work, now Amorphophallus campanulatus, Bl. As 
a species, our present plant is abundantly different; (1) in size, 
for our figure of 4. campanulatus, though reduced to one-fourth 
its natural size, greatly exceeds the natural size of this; (2) the 
floral portion of the spadix is here broad spindle-shaped, there 
singularly dilated upwards; and (3) the terminal appendage, 
there forming an enormous wrinkled expansion, is here conico- 
globose, quite smooth and even on the surface. A second species 
of this genus (for all of the others attributed to it now belong to 
Conophallus, Bl.) is derived from Rheede, in Hort. Malabaricus, 
above quoted, which agrees well enough with our plant to justify 
JUNE Ist, 1860. 
