602 ADDENDA. 
18. Rauwolfia obscura, X. Schum. Add: De Wild. Etudes 
F]. Bas et Moyen Congo, i. 69, 
Lower Guinea. Jlower Congo ; between Dembo and Kisantu, Gillet, 1583; 
near Kimuenza, Gillet, 776, 1652, 1661b. 
1. Allamanda cathartica, Linn. Add: De Wild. Etudes Fl. 
Bas et Moyen Congo, i. 67, 
Lower Guinea. Lower Congo: Leopoldville to Mombazi, Gillet, 2590. 
1, Lochnera rosea, Reichb. Add: 
Upper Guinea. Add: Liberia: near Monrovia, Whyte ! 
1, Alstonia congensis, Hngl. Add: A. scholaris, Cheval. in 
Bull. Mus. Hist. Nat. Par. vi. (1900), 423. 
4. Callichilia subsessilis, Stapf. Add under: 
Upper Guinea. Liberia: within 20 miles of Karka Town, Whyte! 
4a, Callichilia stenosepala, Stapf. A glabrous shrub; branches 
slender, terete, pale green when young, at length whitish. Leaves 
lanceolate to elliptic-lanceolate, acutely acuminate (acumen slender), 
gradually attenuated or acuminate below and mostly suddenly con- 
tracted at the very base, 3-7 in. long, 1-23 in. broad, membranous or 
papery ; secondary nerves 8-12 on each side; petiole very short or 0. 
Inflorescences at first umbelliform, then lengthening out and racemi- 
form with 2—3 flowers out at a time; peduncle slender, 2—3 in. long ; 
bracts ovate, acute or acuminate, 1$-2 lin. long; pedicels 4-5 lin. long. 
Calyx 4-7 lin. long; sepals narrow, lanceolate, acuminate, with very 
numerous subulate glands at the base within. Corolla white; tube 
slender, constricted at the middle, about 1} in. long; lobes obliquely 
obovate, half as long as the tube. Stamens inserted at the middle of 
the corolla-tube ; anthers about 2 lin. long. Disc shallow, wide, entire. 
Style 7-8 lin. long. Fruit unknown. 
Upper Guinea. Liberia: Grant’s Farm, near the Sincu River, Whyte! 
ee to C. subsessilis, Stapf, but easily distinguished by the very narrow 
sepals, 
3. Carvalhoa petiolata, K. Schum. in Engl. Jahrb. xxxiii. 317. 
The description of this species agrees exactly with that of C’. macrophylla. 
It was described from specimens collected by Scheffler near Derema 10 
Usambara (No. 219). 
5. Gabunia glandulosa, Stapf. Add: 
Upper Guinea. Liberia: near Monrovia, Whyte! Sinou basin, Whyte, 6! 
, ‘a. Gabunia Gentilii, De Wild. in Belg. Colon., 1902, 508 and 
Ltudes Fl. Bas et Moyen Congo, i. 68. A tree, 60-90 ft. high ; stem up to 
2 ft. in diam. Leaves broad-ovate, obtuse, cuneate at the base, up t? 
