160 CL. AROiDE^ (brown). [Amorjjhophalhf^s. 



30. A, abyssinicus, N. E. 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 ahyssinicum, A. Rich. Tent. Fl. Abyss. 

 ii. 352. Sauromatum ahyssinicum, Schott, Syn. Aroid. 25 ; Prod. 

 Aroid. 72, not of Engler. 



wile Xiacd. Abyssinia : in the valley of the River Tacazze near Tchelatche- 

 kenneh, {\mong stones, Quartin- Dillon. 



I have not seen this plant, but from the description given by Richard, there cau 

 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 

 Sauromaturri. 



Possibly the specimens collected in Abyssinia by Steudner, 707, 709, and quoted 

 by Engler (Jjihrb, 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, monoecious, 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, N. E, 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 2 J 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 J in. long ; male part | in. long ; 

 staminodal or neuter part If 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. — Pseudohydrosme Biittneri, Engl. 

 Jahrb. xv. 456, t. 17 j Engl. & Prantl, Pflanzenfam. Nachtr. zu ii.-iv. 

 59. P. Buettneriy Durand & Schinz, Consp. Fl. Afr. v. 475. 



XiO'wer Guinea. Gaboon : Munda district ; Sibange Farm, Biittner, 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 



