74, KEY TO PLANTS. 
(2) Ovules in each cell of the ovary 2 or 
more. 97. 
70 (a) Stamens distinctly perigynous. rf i: 
(4) Stamens hypogynous. 74, 
71 (z) Stamens 10 or more. ‘Trees. Ovary 
2-celled. Style basal. Tropics. 
Rosaceae. 
(2) Stamens 4-5. 72. 
72 (a) Stamens opposite to the petals. Calyx- 
lobes valvate, petals valvate or open in 
aestivation. Shrubs or trees. Ovary 
entire or slightly lobed. Rhamneae. 
(4) Stamens alternate with the petals. Calyx- 
lobes and petals imbricate in aestiva- 
tion. 73. 
73 (a) Herbs. Petals with their claws united in 
a tube, except at the base. Flowers 
spicate or racemose. Stamens unequal 
in length. Ovary lobed. Australia, 
New Zealand, Philippine Islands. 
Stackhousieae. 
(6) Shrubs or trees. Petals free. Ovary en- 
tire or slightly lobed. Celastrineue. 
74 (a) Flowers unisexual. 75. 
(0) Flowers hermaphrodite or polygamous. 79. 
75 (a) Ovary 4-6-partite. Leaves usually pin- 
nate, alternate, exstipulate. Styles con- 
