Note 869 — I.—PHÆNOGAMOUS OR FLOWERING PLANTS. (continued 7)
Reading edition
Barth speaks of it as an invaluable gift of Providence: Reisen und Entdeckungen in Nord-und Centralafrica, Gotha, 1858. i. 614; iii. 334. 400; iv. 173.—The same says Rohlfs, Reisen durch Nordafrica, Gotha (1872) 23.