ADDENDA, 591 
below; secondary nerves about 18 on each side, oblique, slender, 
connected by gently curved arches, 1-1} lin. distant from the margin, 
like the loosely reticulating veins faintly raised; petiole 4~54 lin. long. 
Flowers in dense subsessile corymbs, at the end of the branches and 
from the axils of the uppermost leaf pairs, the terminal up to 12- 
flowered, minutely rusty tomentose all over ; bracts ovate, more or less 
obtuse, 1 lin. long; pedicels stout, up to 14 lin. long, bracteolate. 
Calyx 14-1} lin. long, segments very broad, ovate, obtuse. Corolla- 
bud up to 6 lin. long; tube 2 lin. long, widest between the middle and 
the mouth, finely pubescent without above the glabrous base, very 
sparingly within; lobes linear-oblong, up to 4 lin. long, sparingly 
pubescent near the base without. Stamens inserted at the middle or 
just above it ; anthers lanceolate, almost 1 lin. long. Ovary ovoid, with 
a densely white-silky top. Style and stigma 1 lin. long, the latter 
cylindric, deeply bifid. 
Nile Land. Uganda: Dumu, 4000 ft., Dawe, 13 partly ! 47 partly ! 
Evidently nearly allied to Z. owariensis and L. Klainei, but easily recognised 
by the much larger flowers. This yields, according to Dawe, excellent rubber. 
196. Landolphia Pierrei, Hua in Compt. Rend. Acad. Paris, 
exxxv. (1902) 868, Flowering branches robust, covered when young 
with long reddish-brown hairs, at length glabrescent. Leaves more or less 
elliptic, long acuminate, rounded or almost sinuate at the base, 4—6 in 
long, 2-14 in. broad, midrib hairy; secondary nerves about 12 on each 
side, rather conspicuous. Panicle corymbose, almost sessile at the end of 
the branches or in branch-forks, dense, hairy; bracts subacute, persis- 
tent ; pedicels extremely short. Sepals oblong or ovate. Corolla-tube 
fusiform, finely pubescent in the exserted part; limb 3-4 lin. in diam. ; 
lobes falciform, subacute, about half as long as the exserted part of the 
corolla-tube. Stamens inserted at the middle of the tube; filaments 
hairy at the base; anthers emarginate at the apex. Ovary tubinate, 
glabrous below, velvety above; stigma as in L, owariensis. Fruit sub- 
globose, almost 24 in. long, 2 in. wide, deep yellow, turning black when 
dry and covering itself with a blueish bloom, smooth. Seeds about 12, 
irregular, angular, 74-10 lin. long.—Z. owariensis, Hallier f. Kaut- 
schuklianen in Jahrb. Hamburg. Wissensch. Anstalt, vii. (1899) 
3. Beih. (in part) 78. 
Lower Guinea. Gaboon: Mount Bouet, near Libreville, Klaine, 286, 454, 
544, 926, 1357, 1390, 1934dis, 1972; Sibange forest, Biittner, 497, 
Biittner’s specimens were on Hallier’s authority quoted on p 50 under Z. owari- 
ensis, Klaine states that caoutchouc is produced from the latex of ZL. Pierrei. 
20. Landolphia Klainei, Pierre. Add: Lecomte in Bull. 
Mus. Hist. Nat. Par. vii. (1901) 196 ; Cheval. in Bull. Mus. Hist. Nat. 
Par. vii. (1901), 426 ; Hua in Rev. Cult. Colon. xi. 322-328; De Wild. 
Not. Apoc. Laticif. Congo, 67, t. iii; De Wild. & Gentil, Lian. 
Caoutch. Congo, 67, tt. v., vi., vii. According to De Wildeman and 
Gentil, the area of this species extends as far as the Ubangi River, and 
