562 LXXXVII. GENTIANEE (BAKER AND BROWN).  [Veurotheca. 
6. N. congolana, De Wild. d: Durand in Comptes-rendus Soc. Bot. 
Belg. xxxviii. 98. A glabrous annual, 6-16 in. high. Stem slender, 
usually simple, with long internodes, flowering only at the apical part. 
‘Leaves 3-9 lin. long, $-24 lin. broad; lower more or less crowded, 
broadly oblanceolate or subelliptic, obtuse ; upper in distant pairs, sub- 
erect, linear or linear-lanceolate, subacute ; flowering leaves or bracts 
1-1} lin. long, linear-subulate. Flowers crowded into short racemes 
terminating the stem and its few branches. Pedicels $—1 lin. long. 
‘Calyx-tube 2—3 lin. long, equally and prominently 8-ribbed; lobes -1 
lin. long, narrowly deltoid, very acute. Corolla blue or white; tube 
about 3 lin. long, funnel-shaped; lobes 14 lin. long, 1} lin. broad, 
broadly ovate, acute. Style filiform, exserted ; stigmatic lobes linear, 
‘suberect or recurving.—Reliq. Dewevr. 162; Hua in Bull. Soc. Bot. 
France, xlviii. 262 and 265. WN. Baumii, Gilg in Kunene-Sambesi 
Exped. 333. Octopleura lceselioides, var. grandiflora, Knobl. in Bot. 
‘Centralbl. Ix. (189+) 362, partly. 
Lower Guinea. French Congo: Diélé, by the River Alima Leketi, Brazza, 
134, and prairies of Batékés, Thollon, 122 (ex Hua). Angola: Amboella ; by the 
River Longa above Napalanka, in sandy places on the borders of swamps, 3700 ft., 
Baum, 604! 
South Central. Congo Free State: Oukounou, Dewevre, 1084. Middle 
‘Congo ; between Lukolela and the Equator, Biittner, 575 (ex Gilg). 
I have not seen a specimen of NV. congolana, but according to the description it 
does not differ from NV. Baumii, except in the colour of the flowers ; the former is 
‘described as having white flowers, whilst in WV. Baumii they are blue. Hua also 
notes that the flowers of Brazza and Thollon’s specimens are blue, whilst those of 
Dewévre 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, $-1 in. long, 2-24 lin. broad, spathulate-oblong 
or oblanceolate, narrowed into a petiole; stem leaves in 2—4 distant 
pairs, }-1} in. long, 1-24 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 12 lin. long, # lin. broad, deltoid-ovate, 
acute, spreading. Corolla-tube 4-4} lin. long; lobes 3 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.—J. exacoides, Gilg in Schlechter, Westafr. 
Kautschuk-Exped. 304, name only. 
Lower Guinea. French Congo: Cape Lopez, sands near the sea, Thollon, 
ser. ii, 43, Schlechter, 12814! sandy plain of Dayor, Griffon du Bellay, 104; desert 
Flain at Fernand Vaz, Leroy; Mayumba, Dybowski, 38; Ngore, moist sandy 
prairies, Dybowski, 112. 
10. ENICOSTEMA, Blume; Benth. et Hook. f. Gen. Pl. ii. 807. 
Calyx-tube campanulate; teeth 5, lanceolate. Corolla-tube long, 
cylindrical in the lower half, narrowly f unnel-shaped in the upper half ; 
