160 CL. AROIDEZ (BROWN). { Amorphophallus. 
30. A. abyssinicus, V. Z. Br. Tuber depressed-globose, Spathe 
pedunculate, glabrous, convolute at the base, enlarged in the upper part, 
erect, obtuse, margin subrevolute, blackish-purple. Spadix with an 
oblong-clavate naked apex (appendix). Ovaries numerous. Abortive 
flowers (neuter organs) none. Stamens very numerous, sessile, opening 
by two apical pores.— Arum abyssinicum, A. Rich. Tent. Fl. Abyss. 
ii, 352. Sauromatum abyssinicwm, Schott, Syn. Aroid. 25; Prod. 
Aroid. 72, not of Engler. 
Wile Land. Abyssinia: in the valley of the River Tacazze near Tchelatche- 
kenneh, among stones, Quartin-Dillon. 
I have not seen this plant, but from the description given by Richard, there can 
be little doubt that it is a species of Amorphophallus, as the convolute spathe and 
absence of neuter organs are entirely at variance with the characters of the genus 
Sauromatum. 
Possibly the specimens collected in Abyssinia by Stewdner, 707, 709, and quoted 
by Engler (Jahrb. xv. 460) and Durand & Schinz (Consp. Fl. Afr. v. 474) under 
Hydrosme Schweinfurthii, Engl., may belong to this species. 
5. ZYGANTHERA, N. E. Br, 
Spathe large, convolute at the base. Spadix free, shorter than the 
spathe, monecious, lower half fertile, upper half covered with barren 
organs (staminodes); male, female, and barren parts contiguous; 
appendix none. Perianth none. Ovary 2-celled; style short; stigma 
thick, capitate, subbilobed. Ovule solitary in each cell, basal, erect, 
anatropous. Anthers connate in pairs, sessile; connective stout, much 
broader than the cells, produced beyond them and dilated into an angular 
truncate subbilobed apex; cells linear-oblong. Staminodes cuneate- 
oblong, subclavate, subtruncate or slightly convex at the apex.—A 
tuberous-rooted herb, flowering before the leaves appear. Leaves un- 
known. Peduncle very short. 
An endemic, monotypic genus. 
1. Z. Buttneri, V. #. Br. Leaf unknown. Peduncle 1} in. 
long, not very thick, concealed by the surrounding cataphyllary leaves, 
the innermost of which are about 4—5 in. long, 1 in. broad, strap- 
shaped or oblong-lanceolate, acute. Spathe about 24 ft. long, convolute 
for about 3 in. at the base. Spadix 3 in. long, about 7 lin. thick, 
cylindric, obtuse, densely covered with flowers and staminodes or 
neuter organs; female part about } in. long; male part ? in. long; 
staminodal or neuter part 13 in. long. Ovary subglobose; style 
short ; stigma subglobose, slightly 2-lobed. Anthers connate in pairs, 
sessile, subquadrate ; connective dilated at the apex beyond the cells, 
truncate, angular, faintly 2-lobed, smooth ? Staminodes cuneate-oblong, 
sub-clavate, convexly subtruncate.—Pser:dohydrosme Biittnert, Engl. 
Jahrb. xv. 456, t. 17; Engl. & Prantl, Pflanzenfam. Nachtr. zu ii.iv- 
59. P. Buettneri, Durand & Schinz, Consp. Fl. Afr. v. 475. 
Lower Guinea. Gaboon: Munda district; Sibange Farm, Bittner, 519. 
Engler places this plant under his genus Pseudohydrosme, but according to his 
description and figure, for I have not seen the plant, the differences between this 
