558 Lxxxvii. GENTiANE^ (baker AND brown). [Causcora. 



4-winged. Calyx 4-5 lin. long; tube ventricose; teeth ovate-lanceo- 

 late. Corolla white or pale pink; lobes much shorter than the tube, 

 obovate, 2h lin. long. Perfect stamen 1. Capsule shorter than the calyx. 



upper Guinea. Southoru Nigeria : Oguriule, Holland, 266 ! Onitsa, Barter, 

 1755 ! 



I^ile Xiand. BoDgo : Duggudu, Schweinfurth, 2695! Sabbi, Schweinfurth, 

 2614! 



Kower Guinea. Lower Congo : Stanley Pool, Calleioaert / 



South Central. Congo Free State : Mtowa, on Lake Tanganyika, Descamps. 



lHozamb. Sist. Pemba Island, Bojer ! Prit'sh Central Africa: Nyasaland; 

 K^ndowe to Karonga, Whyte, 81 ! 



Also in Madagascar and Tropical Asia. 



2. C. diffusa, R. Br. ; Grweh. in DC. Prod. ix. 64. A much- 

 branched erect annual ; stems slender, 4-a.ngled, J-2 ft. long. Leaves 

 membranous ; upper ovate, acute, short ; lower narrowed to the base, 

 1—1 7^ in. long. Flowers very numerous, in a lax rather diffuse cymose 

 panfcle ; pedicels 3-7 lin. long. Calyx J in. long, not winged ; teeth 4, 

 subulate, erect, ^-| lin. long. Corolla pink ; tube as long as the calyx ; 

 lobes unequal, much shorter than the tube, ovate. Stamens unequal. 

 Capsule shorter than the calyx. — Benth. in Hook Niger Fl. 460. — 

 Orthostemon erectum, R. Br. Prod. Fl. Nov. Holl. 451. 



upper Guinea. Senegal, Heudelot, 170! Sie;ra Leone: Kofiu Mountain, 

 Scott-Elliot, 4505, and without precise locality, Don. Niger Territory : Nupe, 

 Barter, 806 ! 



JTile Iiand. Nnbia, Zb^scZ/f/, 488! Mittu : KxxMn, Schweinf art?/., 2^14:. 



nXozaml). Sist. British Central Africa : Nyasa,land; Mpata and commence- 

 ment of the Tanganyika Plateau, Whyte ! Fort Hill, 3500-4000 ft., Whyte ! 



Also in Madagascar, Tropical Asia and Australia. 



3. C, Kirkii, N. E. Br. Plant 6-0 in. high, branching from the 

 base upwards, glabrous; branches ascending or nearly erect, 4-angled, 

 trichotomous, several-flowered, the whole plant forming an elongate 

 contracted panicle of cymes. Leaves spreading, J-1 in. long, 1 J-5 lin. 

 broad, lanceolate or elliptic, acute. Pedicels 1-3 lin. long. Calyx-tube 

 1-lJ lin. long, cylindric, not winged; lobes h lin. long, deltoid, acute. 

 Corolla-tube IJ-lJ lin. long ; lobes subequal, j-f lin. long, i lin. broad, 

 elliptic-oblong, emarginate or bifid at the apex. Stamens 4, equal; 

 filaments J lin. long, filiform, all inserted \ lin. below the corolla-sinuses ; 

 anthers all alike and fertile, \ lin. long and about as broad, roundish- 

 cordate. Style very short ; stigma deeply divided into 2 large obovate 

 lobes. 



IWCozamb. Dist. British Central Africa : on an island in the Zambesi at 

 Victoria Falls, Kirk ! 



Orthostemon, H. Br., should, perhaps, be letained as distinct from Canscora, 

 Lam., and this be referred to it as O. Kirkii, X. E. Br. 



C. ramosissima, Baker in Kew Bulletin, 1898, 158, is Torenia spicata^ 

 Engl., in Scrophulariacece. 



