Tas. 6195. 
PROTEINOPHALLUS Rrviert. 
Native of Cochin-China. 
Nat. Ord, AromDEz.—Tribe PYTHONIEZ. 
Nov. gen. PRoTeINoPHALLUS,—Spatha basi convoluta; lamina ampla cordato- 
orbiculari acuta explanata ad 20-costata, marginibus recurvis. Spadiz _Spa- 
tham longe superans, inferne continuo-androgynus organibus neutris 0; 
appendice elongato fusiformi subulato, sensim acuminato. Antherz 
conferta, filamento crasso zquilatz, 2-loculares, 2-porose. Ovaria nume- 
rosa, dense conferta, globosa, 2-3-locularia; stylus brevis, columnaris, 
stigmate capitato 3-lobo ; ovula in loculis solitaria, angulo interiori prope 
bari adnata, anatropa. : : 
Herba lata, Cochinchinensis, radice magno tuberoso. _ Folium  serotinum, 
longe crasse petiolatum, lamina amplissema, trisecta, segmentis bipinnatifidis. 
Seapus elongatus, strictus, gracilis. Spathe tubus ovoideus ; lamina 1} ped. 
diametro, saturate luride purpurea, nervis impressis, nervulis transversis Juncts. 
Organa mascula cum femineis continua. Spadicis appendix pedalis et ultra, 
basi lobulatus, luride purpureus, lente curvus, 
PROTEINOPHALLUS Rivieri, Hook. f. : 
AMORPHOPHALLUS Rivieri, Durieu in Rev. Hortic., 1870, p. 573; 1872, p. 19; 
1873, pp. 305 et 344. Gard Chron., 1873, p. 610, cum Ic. xylog. 
A. palmeeformis, Riv. MSS, 
To Mr. Bull belongs the credit of importing and first 
flowering in England the two most gigantic and singular 
herbaceous Aroids known to us of late years, namely, the 
Godwinia gigas (Tab. nost. 6048) and the subject of the present 
plate. The latter plant, though hitherto figured only by an 
uncoloured but excellent woodcut in the Gardener’s Chronicle, 
is already well known to horticulturists as a hardy plant, suited 
to open-air cultivation even in England—a fact strangely 
inconsistent (if Nature can be inconsistent) with that of its 
native climate being the eminently hot and humid one of 
Cochin-China, whence it was introduced into Europe by M. 
Riviére, jardinier-en-chef of the Luxemburg Palace Garden 
in Paris. 
I have been led, after careful consideration of the structure 
of this plant, to reject it from Amorphophallus, a genus with 
which I was well acquainted in India, and from which, except 
in the form of the leaf, it differs greatly in habit, as it does in 
certain floral characters. In Amorphophallus proper the spathe 
is almost sessile, expanded almost from the base into an 
irregularly-plaited, funnel-shaped limb, with a lobed lip all 
round; the spadix is very short, with a deformed appendix 
(whence the generic name); the style is very long and 
slender, and the ovules have longer funicles. Schott, indeed, in 
his “Synopsis Aroidearum,” would have excluded the present 
plant from the subtribe Amorphopallidew, which he charac- 
NovemsBer Ist, 1875. 
