398 l82. OENOTHF.RACKAE 



bristles. Herbs. Leaves opposite. Flowers in racemes. — Species i. 



North Africa. [Tribe CIRCAEEAE.] Circaea L. 



Flowers 3 — 6-merous. Stamens 3 — 12. Ovules and seeds numerous. 

 Fruit a capsule or a berr}^ 3 



3. Flowers with bracteoles, regular. Receptacle (calyx-tube) not prolonged 



bevond the ovary. Calyx persistent. Petals yellow or white, rarely 

 absent. Fruit loculicidal and septicidal. Herbs or undershrubs. 

 Stipules present, but usuallv minute and caducous. [Tribe JUSSIEU- 



EAE.j 4 



Flowers witliout bracteoles, .i-rnerous. Receptacle more or less prolonged 

 above the ovary ; if obscurely prolonged, then flowers somewhat 

 irregular with red petals. Calyx deciduous. Stamens 8. Fruit 

 locuhcidal or indehiscent 5 



4. Stamens 3 — 6. — Species 5. (Including Isnardia L.) . . Ludwigia L. 

 Stamens 8 — 12. Petals 4 — 6. Epigynous disc pyramidal or cushion- 

 shaped. — Species 10. Some of them are used medicinally and for 

 dyeing. (Plate 116.) Jussieua L. 



5. Stem woody. Teaves stipulate. Flowers regular. Calyx coloured, with 



a long tube. Petals red or violet. Stamens unequal. Fruit a berry. 

 — Species i. Naturalized in some tropical countries. An ornamental 

 plant. [Tribe FUCHSIEAE.] Fuchsia L. 



Stem herbaceous or woody at the base only. Leaves exstipulate. Fruit 



a capsule 6 



'6. Calyx-tube short, bell-shaped. Petals usually red. Stamens unequal 

 in length. Fruit linear with a membranous rind. Seeds with a tuft 

 of hairs. [Tribe EPN.OBIEAE.] 7 



Calyx-tube long, funnel-shaped or cylindrical. Calyx-lobes reflexed. 

 Flowers regular. Petals usually yellow. Stamens subequal. Stigma 

 4-partite. Seeds without a tuft of hairs. [Tribe OENOTHEREAE.] 8 



7. Flowers somewhat irregular, large. Calyx-tube scarcely prolonged beyond 



the ovary. Petals red, spreading. Stamens in one row, bent down, 

 broadened at the base. Style bent down, hairy at the base. Stigma 

 4-partitc. — Species i. Canary Islands. Yields tea and medicaments, 

 and serves as a vegetable and as an ornamental plant. (Under Epilob- 



ijim L.) Chamaenerium Spach 



Flowers regular, usually small. Calyx-tube shortly bell-shaped above 

 the ovary. Stamens in two rows, erect. Style erect, glabrous. — 

 Species 15. Some of them are used as ornamental or medicinal plants. 

 "Willow-herb." Epilobium L. 



8. Calyx-tube funnel-shaped, rather short (as long as or shorter than the lobes). 



Petals red or white. Fruit club-shaped, stalked, keeled at the angles, 

 with a more or less woody rind. Seeds with an elongated funicle. Leaves 

 pinnatifid. — Species 2. Naturalized in North and South Africa. 

 Ornamental plants. (Under Oenothera L.) . . Xylopleurum Spach 



