254 xcviii. ACANTHACE.E (clarke). [Bungia. 



petiole 1 in. long. Spikes terminal and quasi-axillary, unilateral ; 

 bracts nearly J in. long, ovate, hyaline-edged, apiculate or long-cuspi- 

 date. Calyx I in. long, unequally 5-fid, hairy. Corolla J in. long. 

 One anther-cell lower than the other, tailed ; pollen " banded " and also 

 minutely tubercled. Capsule small, puberulous ; dissepiments separ- 

 ating ; seeds tubercled. — Lindau in Engl. &. Prantl, Pflanzenfam. iv. 3 B. 



upper Guinea. Cameroons : Yaunde, Zenker Sf Siaudt, 189 ! 



Soutb Central. Cong^o Free State : in thickets by the River Ganga, near the 

 town of Muene Putu Kasongo, Bilttner^ 456 ! 



Not in " Gaboon- Loango," as stated by Lindau ; see Proc. Royal Geograph. Soc. 

 1886, p. 635. 



4. R. congoensis, C. B. Clarke. Branches 1 foot long, minutely 

 pubescent. Leaves 8 by 1 in., obtuse, glabrate, base attenuate; petiole 

 J in. long. Spikes terminal and many quasi-axillary, up to Ij by 

 nearly J in. ; bract orbicular, J in. in diam., minutely pubescent, with a 

 broad hyaline margin. Sepals 5, subequal, ^^ in. long, linear. Corolla 

 small, hardly exceeding J in. in length (not seen well expanded). Capsule 

 l-| in. long ; placentae rising elastically from the base of the valves ; 

 seeds minutely tuberculate. 



Iiower Guinea. Lower Congo: Lukungu, 700 ft., Hens, 330! Smith, 64! 



This has been supposed possibly to be Rungia repens, Nees, a common weed in 

 India; but the seeds differ, and the numerous axillary spikes give it a different 

 aspect. 



57. MACRORUNGIA, C. B. Clarke. 



Sepals 5, united half-way up, or nearly free, coloured, scarious, free 

 portions broad-lanceolate. Corolla red ; tube scarcely \ in. long ; 

 anticous lip 1 in. or more, without in the bud, sub-.S-fid or subentire ; 

 posticous lip broader, emarginate. Stamens 2 ; filaments long exserted, 

 glabrous ; anther-cells 2, oblong, muticous, one placed a little below the 

 other ; pollen ellipsoid, with 2 stopples and several rows of minute 

 tubercles, obscurely banded. Capsule ovoid ; placentae rising elastically 

 fiom the base of the valves ; seeds obscurely cerebrose-marked. — 

 Shrubs, nearly glabrous. Leaves entire. Flowers in spikes; bract 

 ovate, narrowly hyaline-edged ; bracteoles 0, or narrow. 



Species, besides the subjoined, 1 in South Africa. 



From the fruit, Macrorungia must stand next Rung la or be sunk in it. The 

 corolla is very unlike that of Riingia, as is the comparatively large tubular hyaline 

 calyx. The spikes are looser than in Rungia, less strobilate, the bracts not (or most 

 obscurely) 4-ranked, some of them (not those in one definite rank) empty. 



The distinction between Anisotes and Macrorungia lies in the elastic rising of the 

 placentae in the ripe capsule in Macrorungia. Lindau has placed his Symplectochilvs 



