230 gl. NEPENTHACEAE — 92. DKOSERACEAE — 93. PODOSTEMONACEAE 



more, with united filaments ; anthers 2-celled, opening outwards. Ovary 

 superior, 4-celled. Ovules numerous, axile, inverted. Stigmas 4, sessile, 

 2-lobcd. Fruit a loculicidal capsule. Seeds with a straight, axile embryo and 

 ■fleshy albumen. 



Genus i, species 2. Madagascar and Seychelles, Used as ornamental 

 plants. " Pitcher plant." Nepenthes L. 



FAMILY 92. DROSERACEAE 



Herbs or undershrubs. Leaves usually covered with glandular hairs and 

 Tolled up in the bud. Flowers regular, hermaphrodite. Calyx 4 — 8-lobed or 

 -parted, imbricate in bud. Petals 4 — 8, usually 5, free, clawed, imbricate or 

 contorted in aestivation. Stamens 4 — 20, as many as or more than the petals, 

 hypogynous or nearly so, free. Anthers usually turned outwards, opening by 

 longitudinal slits. Ovary superior, i-celled. Ovules numerous (10 or more), 

 inverted. Styles or style-branches 2 — 5. Fruit a loculicidal capsule. Seeds 

 albuminous, with a small embryo. — Genera 3, species 15. (Plate 56.) 



1. Stamens 10 — 20. Styles 5, free, with capitate stigmas. Ovules basal or 



nearly so. Undershrubs. Leav^es linear, glandular-hairy, rolled up 

 in the bud. Flowers in corymbs. — Species i. North-west Africa 



(Morocco) Drosophyllum Link 



Stamens 4 — 8. Styles or style-branches 2 — 5, with not much thickened 

 stigmas. Ovules parietal. Herbs 2 



2. Blade of the leaves jointed to the stalk, folded lengthwise, surrounded by 



bristles, without glands at the edges. Leaves whorled. Flowers 

 solitary, axillary. Stamens 5. Styles 5, free, with branched stigmas. 

 Ovules few, affixed at the middle of the placentas. Floating water- 

 plants. — Species i. Upper Nile Aldrovanda L. 



Blade of the leavesnot jointed, flat, rolled up in the bud, bearing long-stalked 

 glands at the edges. Ovules numerous. — Species 13. Southern and 

 tropical Africa. Some species are used in the preparation of liquors and 

 in medicine. " Sundew." (Plate 56.) Drosera L. 



ORDER ROSALES 



SUBORDER PODOSTEMONINEAE 



FAMILY 93. PODOSTEMONACEAE 



Aquatic herbs resembling mosses or algae. Flowers solitary or in cymes, 

 usually enclosed when young in a spathe, hermaphrodite. Perianth of 2 — 3 

 minute scales, rarely larger and 3-parted. Stamens i — 4, hypog\Tious. Anthers 

 opening by longitudinal slits. Ovary superior, i — 3 -celled, with a central 

 placenta. Ovules numerous, sub-sessile, inverted. Fruit capsular. Seeds 

 exalbuminous. — Genera 9, species 25. Tropical and South Africa. (Plate 

 57-) 



