544 THE VEGETATION OF UGANDA. 
pica, Butyrospermum Parkii, Cassia Sieberiana, Dalbergia melan- 
orylon, Echinops longifolius, Grewia populifolia, Hexalobus sene- 
galensis, Lophira alata, Khaya senegalensis, Nicotiana rustica, 
Odina fruticosa, Pseudocedrela Kotschyi, Sclerocarya Birroea, 
Tetrapleura nilotica, Trichilia emetica, Turræa nilotica, Vangueria 
edulis, Zizyphus abyssinica aud Z. orthacantha, also a new species 
of Randia (R. nilotica) and Acridocarpus (A. ugandensis). 
The Borassus palm does not extend much beyond 4° N. in the 
Nile Province, and the Hyphene palm (H. thebaica) not further 
south than the vicinity of Gondokoro ; but the latter is abundant 
throughout the Sudan. 
EXPLANATION OF THE PLATES. 
PrarTE 21. 
Warburgia ugandensis, Sprague. 
Fig. 1. Flowering branch, natural size. 
2. Diagram of flower. 
3. Flower-bud, enlarged. 
4. Section of flower, enlarged. 
5. Outer petal, enlarged. 
6. Inner petal, enlarged. 
7. Pistil, enlarged. 
8. Cross section of ovary, enlarged. 
9, Fruit, natural size. 
10. Cross section of fruit, natural size. 
11. Seed, natural size. 
12. Embryo, enlarged. 
PLATE 22. 
Balsamocitrus Dawei, Stapf. 
Fig. 1. Flowering branch, natural size. 
2. Flower bud, enlarged. 
3. Flower, with corolla removed, enlarged. 
4. Stamen, enlarged. 
D. Cross section of ovary, enlarged. 
6. Section of fruit, natural size. 
7. Seed, natural size. 
