ADDENDA 
5, Salsola Zeyheri, Schinz. Add: 
Lower Guinea. (German South-west Africa: Damaraland; Richthofen, 
Galpin and Pearson, 7546! 
3. Polygonum plebeium, 7. Br. Add: 
Lower Guinea. Damaraland: Mouth of Swakop River, Galpin and Pearson, 
7537 ! 
2a. Tylostemon jabassensis, Engl. ¢: Krause in Engl. Jahrb. 
xlvi. 143. An erect shrub or tree of moderate height; branchlets 
slender, terete, glabrous or very shortly puberulous when young; bark 
smooth, brown. Leaves oblong or oblanceolate-oblong, long-acuminate, 
slightly attenuated towards the cordate-emarginate base, 6-10 in. long, 
3-44 in. broad, thinly coriaceous, glabrous, drying greyish above and 
brownish beneath ; lateral nerves 9-12, slightly impressed (rarely raised) 
above, prominent underneath ; petiole stout, 3-6 in. long, widely chan- 
nelled above. Panicles many-flowered, 5-7 in. long, shortly puberulous. 
Perianth campanulate, whitish when fresh, drying yellowish-brown, 
searcely over 4 lin. long, hairy within and without; segments ovate. 
{ntrorse stamens with broad, densely hairy filaments ; extrorse stamens 
slightly narrower with a large roundish gland on each side of the base ; 
staminodes subcordate-ovate. Ovary broad ovoid, gradually passing into 
the short stout style. 
Upper Guinea. Cameroons: in a high forest on rocky ground, at Jabassi, 
by the Wuri River, Ledermann, 1105, 1107. 
4a. Tylostemon ndongensis, Hngl. ¢ Krause in Engl. Jahrb. 
xlvi. 148. A tree 25-35 ft. high; branchlets stout, up to 8 lin. thick, 
terete, glabrous; bark dirty grey to greyish-black. Leaves oblong, 
rarely obovate-oblong, long-acuminate, narrowed towards the base, 6-8 in. 
long, 2-3 in. broad, coriaceous, quite glabrous, dark green, drying brown ; 
lateral nerves 7-10 curved towards the margin and like the stout midrib 
prominent beneath, slightly impressed or raised above; petiole stout, 
5-8 lin. long, channelled above. Panicles many-flowered, loose, 4 in. 
long, sparingly and very shortly pubescent or glabrous, peduncle slightly 
flattened. Perianth hemispheric, pale green when fresh, drying brownish- 
black, scarcely over } lin. long, glabrous; segments short, ovate. In- 
trorse stamens with slightly widened hairy filaments ; extrorse stamens 
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