hC)2 Lxxxvii. GENTiANE^ (baker AND brown). [yeuvotkeca. 



f». N. cougolaua, De Wild. cO Durand in Convptes-rendus Soc. Bot. 

 Bely. xxxviii. 08. A glabrous annual, G-1 6 in. high. Stem slender, 

 usually simple, with long internodes, flowering only at the apical part. 

 Leaves 3-0 lin. long, J-2J lin. broad ; lower morft or less crowded, 

 broadly oblanceolate or subelliptic, obtuse ; upper in distant pairs, sub- 

 erect, linear or linear-lanceolate, subacute ; flowering leaves or bracts 

 l-H lin. long, linear-subulate. Flowers crowded into short racemes 

 terminating the stem and its few branches. Pedicels |-1 lin. long. 

 Calyx-tube 2-8 lin. long, equally and prominently 8-ribbed ; lobes J-1 

 lin. long, narrowly deltoid, very acute. Corolla blue or white; tube 

 about 3 lin. long, funnel-shaped ; lobes 1 J lin. long, l\ lin. broad, 

 broadly ovate, acute. Style filiform, exserted ; stigmatic lobes linear, 

 suberect or recurving. — Reliq. Dewevr. 1G2 ; Hua in Bull. Soc. Bot. 

 France, xlviii. 262 and 205. N. Baumii, Gilg in Kunene-Sambesi 

 Exped. 333. Octopleura loeselioides, var. grandifora, Knobl. in Bot. 

 Centralbl. Ix. (180-1) 362, partly. 



Kower Cruiuea. French Congo: Diele, by tlie River Aliina Leketi, Brazza, 

 18-i, and prairies of Batekes, Thollon, 122 (ex Hua). Angola : Amboella ; bv the 

 Hiver Longa above Napalanka, in sandy places on the borders of swimps, 3700 ft.. 

 Baum, 604! 



South Central. Congo Free State : Oukounon, Dewecre, 1084. Middle 

 Congo; between LuUoleLi and the Eijuator, Bilttner, 575 (ex Oilg). 



I have not seen a specimen of N. congolana, but according to the description it 

 does not differ from N. Bavmii, except in the colour of the tioivers ; the former is 

 described as having white Howers wliilst in N. Baumii they are blue. Hua also 

 notes that the flowers of Brazza and TlioUon's specimens are blue, whilst those of 

 Dewevre are white, but are otherwise identical. 



7. N. corymbosa, Hua in Bull. Soc. Bot. France, xlviii. 262 and 

 267. Perennial, 4-5 in. high, with several stems from the base. 

 Radical leaves rosulate, J-1 in. long, 2-2 i lin. broad, spathulate-oblong 

 or oblanceolate, narrowed into a petiole ; stem leaves in 2-4 distant 

 pairs, J-lJ in. long, 1-2 J lin. broad, oblanceolate to linear, narrowed at 

 the base. Flowers 4-12 or more crowded in corymb-like clusters at the 

 top of the stems and branches. Calyx equally and prominently 8- 

 ribbed ; tube 2 lin. long ; lobes If lin. long, | lin. broad, deltoid-ovate, 

 acute, spreading. Corolla-tube 4-4J lin. long ; lobes o lin. long, 2 lin. 

 broad, elliptic, acute. Stamens reaching to the mouth of the corolla- 

 tube ; anthers oblong, not apiculate. Style exserted ; stigma with 2 

 linear recurved lobes. — N. exacoides, Gilg in Schlechter, Westafr. 

 Kautschuk-Exped. 304, name only. 



lao-wer Guinea. French Congo : Cape Lopez, sands near the sea, Thollon, 

 jser. ii. 43, Schlechter, 12814! sandy plain of Dayor, Griffon dii Bellai/, 104; desert 

 jlain at Fernand Vaz, Leroy ; Mayumba, Di/bowski, 38; Xgore, moist sandy 

 jrairies, Dyhowski, 112. 



10. ENICOSTEMA, Blume ; Benth. et Hook. f. Gen. PI. ii. 807. 



C/aiyx-tube campanulate ; teeth o, lanceolate. Corolla-tube long, 

 cylindrical in the lower half, narrowly funnel-shaped in the upper half ; 



