DROSERACEAE.
FLOW. PL. AFR.
Pl. 56.
J. Fleischmann del.
Drosera Burkeana Planch.
A Plant in flower. B Flower. C Petal. D Flower without the corolla (the calyx cut lengthwise). E Style. F Older flower. G Older flower cut lengthwise. H Seed.
Carpels 2-4, united at least to the middle, forming a 1-celled ovary open at the top with parietal placentation; if carpels united to the middle only, then petals 4. 3
2. Carpels with a single descending ovule attached in the middle of the cell, stellately spreading when ripe. Shrubs.—Species 1. North-west Africa
(Algeria). Astrocarpus Neck.
Carpels with 2-3 basal ovules. Herbs.—Species 3. North and Central
Africa. Caylusea St. Hil.
3. Petals none. Sepals 6. Stamens 10-30, hypogynous. Stigmas 3.
Fruit berry-like, closed at the top. Shrubs. Leaves linear.—Species
5. North Africa and northern East Africa. Ochradenus Del.
Petals 2-8. Fruit capsular, open at the top. 4
4. Petals 2. Disc wanting. Stamens 3-10, hypogynous. Ovary sessile.
Stigmas 4. Herbs or undershrubs.—Species 6. South Africa and
North Africa to Nubia. (Plate 55.) Oligomeris Cambess.
Petals 4-8. Disc present. 5
5. Petals perigynous, 6-8. Stamens perigynous, numerous. Disc double.
Stigmas 2-3. Shrubs.—Species 2. North Africa and northern
East Africa. Randonia Coss.
Petals hypogynous, 4-7. Stamens hypogynous. Ovary stalked. Herbs or undershrubs.—Species 30. North Africa and northern East Africa; one species also introduced in South Africa. Some species (especially
R. luteola L.) yield a dye, oil, and medicaments, others (especially R. odorata L.) are used as ornamental plants and in perfumery. “Mignonette.”
(Including Luteola Tourn.). Reseda L.
SUBORDER MORINGINEAE