68 XCVIII. ACANTHACEiE (CLARKE). [WMtfieldia . 



]Lower Guinea. French Congo : Bateke Dist. ; in the woods of Osika, Brazza, 

 165! near Brazzaville on the Lower Congo, Thollon, 210'! 



9. "W. Stuhlxnanni, C. B. Clarke. Innovations with stellate hairs. 

 Leaves 5 by 1} in., soon glabrate, except the midrib beneath; petiole 

 up to I in. long. Racemes terminal, short, few-flowered ; bracts J-| in. 

 long, lanceolate, gi-een ; bracteoles J in. long, round-elliptic, short, 

 acuminate, whitish. Calyx §-1 in. long ; segments 5, linear-ligulate, 

 glandular-hairy. Corolla purple-violet (LiTidau) ; tube J-1 in. long, 

 inflated in its upper half. Anther-cells in upper half with very long 

 1 -celled white hairs. Style sparsely hairy ; ovary conical at the top, 

 passing continuously into the style. — Stylarthrcpus Stuhlmanni, Lindau 

 in Engl. Jahrb. xx. 11, in Engl. & Prantl, Pfianzenfam. iv. 3B. 80G, 

 and in Engl. Pfl. Ost-Afr. C. 3B7. 



South Central. Congo Free State : Isango River, Siuhlmann, 2963 ! Lualaba 

 River, Togge, 1144 ! 



Mozamb. Blstl German East Africa : Kilimanjaro, Volkens, 2396 ! Usambara, 

 Eolsty 2673 ! 3297 ! Heinsen, 17 ! 



Imperfectly known species. 



10. W. Laurentii, C. B. Clarke. Leaves up to 8 by 4 in., ovate, 

 acuminate at either end, glabrous. Panicle compounded of racemes ; 

 bracts -J in. long, filiform ; bracteoles J in. long, ovate, glabrous. Sepals 

 § in. long, glutinous-pubescent. Corolla- tube 1^ in. long ; lobes | in. 

 long. — Stylarihropus Laurentii, Lindau in Engl. Jahrb. xxiv. 317 ; Wild, 

 (fe Dur. 111. FI. Congo, i. t. 32, p. 65, sub t. 33 and p. 64, "explication," 

 sub t. 32. 



Soutb Central. Congo Free State : Upper Congo at Stanley Falls, Laurent. 



In the text of Wildeman & Durand there are several apparent errors — e.g. 

 " stamens 5," while the cross section of the ovary is not that of any Acanthaceous 

 plant. 



19. SATANOCRATER, Schweinf. ; Benth. et Hook. f. Gen. 

 PI. ii. 1085. 



Cal3rx tubular, inflated, 5-angular, shortly 5-toothed. Corolla large, 

 blue ; tube inflated in the upper half ; lobes 5, subequal, rounded, con- 

 torted in bud. Stamens 4 ; anther-cells 2, muticous ; pollen strongly 

 honeycombed. Ovary with 2 ovules in each cell ; style-branches one 

 linear, the other suppressed. Capsule oblong, 4-seeded ; seeds discoid. — 

 Shrubs 2 ft. high. Leaves entire. Flowers solitary, opposite in the 

 leaf -axils ; pedicels 0-^ in. ; bract ; bracteoles very small, linear. 



Corolla- tube li -2 in, long 1. S.fellatensis. 



Corolla-tube | in. long 2. ^. somalensis. 



1. S. fellatensis, Schweinf. in Verh. Zool. Bot. Gesell.Wien, xviii. 

 676. Pubescent. Leaves 3 by 1-lJ in., elliptic or broad-lanceolate, 

 narrowed at both ends ; petiole up to \ in. long. Bracteoles ~ in. long, 

 linear. Calyx 1 by 3- in. ; segments united | their length ; teeth lanceo- 



