POLYPETALAE. 105 
Anthers opening outwardly or laterally. 
Ovary half-inferior, 1-celled. Seeds 
albuminous. Samydaceae. 
(2) Stamens as many as the petals and alter- 
nate with them, or fewer, or more 
numerous, 2-5 or 8-10. 189. 
189 (2) Flowers  unisexual. Stamens 2-5. 
Anthers adnate, opening outwardly. 
Seeds exalbuminous, Climbing herbs or 
shrubs. Cucurbitaceae. 
(4) Flowers hermaphrodite, rarely unisexual, 
but then stamens 8. Anthers opening 
inwardly or laterally. Seeds albuminous. 
190. 
190 (a) Stamens 8. Herbs or undershrubs. 
Anthers attached at the base. Ovules 
2-4, pendulous. Leaves exstipulate. 
Petals 4, or in the female flowers 0. 
Ovary 1-celled. Halorageae. 
(4) Stamens 10 or 2-5, rarely 8, but then 
shrubs or trees. Anthers usually at- 
tached at the back. Ovules usually 
numerous. Saxifrageae. 
191 (a) Style 1, simple, rarely cleft at the apex 
es) (in the latter case petals valvate in 
aestivation), or sessile stigma 1. 192. 
(2) Styles 2 or more, free or united at the 
