468 205- VERBEN ACEAE 



5. Calyx two-lipped. Anther-halves divergent below, confluent at the 



apex. Stigma entire. Corolla 5-lobed. — Species i. South Africa 



(Cape Colony) Euthystachys A. DC. 



Calyx regular or nearly so. Anther-halves parallel 6 



6. Corolla 4-lobed, with a wide tube. Calyx 5-parted. Stigma 2-lobed. 



Fruit dehiscing by 4 valves. — Species i. South Africa. 



Campylostachys Kunth 



Corolla 5-lobed, with a narrow tube. Fruit indehiscent. — Species 5. 



South Africa Stilbe Berg 



7. Flowers in racemes. Corolla unequally »s-lobed. Stamens 4. Fruit 



fleshy. Shrubs. [Tribe CITHAREXYLEAE.] 8 



Flowers in spikes or heads. Stamens 4 with more or less parallel anther- 

 halves, or 2. Ovary 2- or 4-Gelled 9 



8. Racemes few-flowered. Anther-halves divergent. Ovary 4-celled. Style- 



apex 2-cleft. Fruit with 2 stones. — Species 2. Islands of Madagascar 



and Socotra Coelocarpus Balf. fil. 



Racemes many-flowered. Anther-halves parallel. Ovary 8-celled. Style- 

 apex 4-cleft. Fruit with 4 stones. — Species i. NaturaHzed in various 

 regions. An ornamental and hedge-plant with edible fruits. 



Duranta L. 



9. Ovary 2-celled. Ovules 2. Fruit two-celled or separating into 2 one- 



celled mericarps. Seeds 2, very rarely I. [Tribe LANTANEAE.] . 10 



Ovary 4-celled. Ovules 4. Fruit separating into 2 usually two-celled, 



or into 4 one-celled mericarps. Seeds 4, very rarely 2. Calyx 5-toothed. 



Corolla unequally 5-lobed. Stamens 4. Herbs or undershrubs. . 14 



10. Perfect stamens 2. Anther-halves spreading horizontally. Calyx 5- 



ribbed and 5-toothed. ... 11 



Perfect stamens 4. Anther-halves parallel 12 



11. Ovary and fruit with an anticous and a posticous cell or stone. Corolla 



2-lipped. Shrubs. — Species i. Cape Verde Islands. Ubochea Baill. 



Ovary and fruit with two lateral cells or stones. — Species 6, one of them 



only naturalized. Tropics. Used as ornamental or medicinal plants. 



{Valerianodes Medik.) Stachytarpheta Vahl 



12. Calyx long, tubular, 5-ribbed, 5-toothed. Corolla 5-lobed. Fruit dry. 



Herbs or undershrubs. — Species 20. South and Central Africa. 



Bouchea Cham. 

 Calyx short, 2 — 4-ribbed or without ribs. Corolla unequally 4 — 5-lobed. 13 



13. Calyx 2 — 4-lobed, two-ribbed. Corolla 4-lobed. Fruit dry. — Species- 



17. Some are used as ornamental or medicinal plants ; one of them 

 {L. citriodora Kunth) yields also an aromatic oil and serves as a substitute 



for tea. (Including Zapania Scop.) Lippia L. 



Calyx entire or toothed. Fruit fleshy, — Species 10, 7 natives of Central 

 and South Africa, 3 naturalized there and on the Canary Islands. Some 

 of them are used as ornamental or medicinal plants. . . Lantana L. 



