BOOK V. 
GEOGRAPHY. 
515 
Zizyphus Palma Christ!, Zygopbyllum simplex, album ; Fagonia 
arabica, Oudneji. 
Cultm-e only in tbe oases : principally Phoenix dactylifera, 
Sorghum vulgare, Triticum vulgare, Hordeum vulgare; several 
sorts of fruit proper to the South of Europe and India. 
XIV. Tropical African Kingdom. 
(^Adansons Kiyigdom.) 
Africa from the 15° N. L. to the tropic of Capricorn, but with 
the exception of Abyssinia and the central highlands (the interior 
of Africa and the east-coast are very incompletely known). Mean 
Temperature, 72*5° to 86°. 
Character. — This flora is neither rich in sorts nor in peculiar 
forms. Leguminosae, Rubiacetfi, Cyperaceae, are prevalent; few 
Palmae, Filices, Scitamineae, Piperaceae, Passifloreae. 
Characteristic genera: Adansonia, Melhania, Christiania, Pent- 
adesma, Napoleona, Parkia, Hoflandia, Thonningia. 
Predominating trees and shrubs : Annona senegalensis etc., 
Cadaba farinosa, Crataeva Adansonii, Capparis edulis, Pentadesma 
butyracea ; Bombax pentandrum, guineense ; Adansonia digitata, 
Sterculia acuminata, Grewia carpinifolia, Acacia sp.. Cassia occi- 
dentalis, Pterocarpus esculentus, Parkia africana, Chrysobalanus 
Icaco, Conocarpus pubescens, Rhizophora sp., Psychotria sp., Big- 
nonia Tulipifera, Avicennia africana, Euphorbia frutescent species, 
Ficus sp., Elais guineensis, Rpahia vinifera, Phoenix spinosa, Pan- 
dan us candelabrum. 
Cultivated plants : Zea Mais, Oryza sativa ; Sorghum vulgare, 
saccharatum ; Panicum sp. (Gussub.) ; Dioscorea alata, sativa ; 
latropha Manihot, Caladium esculentum. 
Musa sapientum, Mangifera indica, Carica Papaya, Bromelia 
Ananas, Elais guineensis, Anacardium occidentale, Ficus sp., Tama- 
rindus indica, Citrus sp., Coffea arabica ; Saccharum officinarum, 
punctatum ; Zingiber officinale ; Amomum Cardamomum, Granum 
Paradisi. 
Phaseolus vulgaris etc., Dolichos oleraceus, Arachis hypogsea, 
Solanum edule etc. 
Gossypium sp., Nicotiana sp. 
Note. The flora of Abyssinia is unknown. 
XV. Kingdom of the Cactus and Piperaceae. 
{Jacquins Kingdom.^ 
Mexico and South America to the Amazon river, and to a height 
of 5000 feet above the level of the sea 0—30° N. L. Mean Tem- 
peraturcy 68° to 83-75°. 
L L 2 
