84 KEY TO PLANTS. 
Ovules in each cell 2. Tropics of the 
Old World. Dipterocarpeae. 
111 (a) Petals valvate in aestivation. Shrubs 
furnished with tendrils. Stamens as 
many as petals, 4-5, free. Ovary sessile, 
2-celled, rarely 3-4-celled. Ampelideae. 
(6) Petals imbricate in aestivation. 112, 
112 (a) Style wanting. Ovary raised above the 
stamens upon along gynophore. Ovules 
attached to the walls (or dissepiments) 
of the ovary-cells. Petals 4. Filaments 
free. Capparideae. 
(6) Style present. Ovary sessile or stalked 
together with the stamens. Ovules 
attached to the inner angle of each 
ovary-cell. 113. 
113 (a) Filaments free, more rarely united at the 
base into several clusters, Fertile 
stamens 10 or more. Anthers 2-celled, 
rarely the cells afterwards confluent. 
Style undivided. Tiliaceae. 
(6) Filaments united to the middle or be- 
yond, or monadelphous at the base, 
rarely almost free, but then fertile 
stamens 5. 114, 
' 114 (a) Anthers 1-celled. | Malvaceae. 
(6) Anthers 2-celled. Sterculiaceae. 
