80 KEY TO PLANTS. 
(0) Leaves’ exstipulate. Flowers white. 
Ovary entire. Ovules pendulous. Al- 
bumen copious. Leaves undivided. 
Tropical America and Africa. 
Humiriaceae. 
97 (2) Stamens hypogynous. Dise wanting, but 
= separate glands or a gynophore some- 
times present. (Receptacle convex, or 
stalk-shaped, or small and plane.) 98. 
(0) Stamens hypogynous, but inserted at the 
base or on the surface of a ring-, cup-, 
or cushion-shaped dise, or perigynous. 
(Receptacle concave or enlarged into a 
disc.) 132. 
98 (a) Leaves opposite or verticillate. 99. 
(0) Leaves alternate or (all) radical. 105. 
99 (a) Stamens 1-10. 100. 
(2) Stamens more than 10. 104. 
100 (az) Sepals 4, united to the middle or beyond. 
Petals valvate in bud. Ovary 2-celled. 
Trees or shrubs. Flowers regular. Petals 
2-4. Stamens 2-4 Style undivided. 
Stigma entire or bifid. Oleaceae. 
(4) Sepals 3 or 5, free or united at the base, 
rarely 4, free. Petals imbricate in bud, 
or only 1 present. Ovary 3-5-celled. 
101. 
