201 



VERBENACEAE. 



Key to genera. 



1. Inflorescence spicate or in small con- 



tracted capitate cymes 

 Inflorescence in paniculate cymes 



2. Shrub 



Herb 



3. Leaves glabrous above 

 Leaves strigose above ... 



4. Inflorescence terminal ... 

 Inflorescence axillary ... 



o. Flowers on a thick grooved axis 

 Flowers on a slender axis 



6. Corolla under i inch, regular ; stamens 



equal 

 Corolla 2-lipped ; stamens didynamous 



7. Leaves digitate... 

 Leaves simple ... 



8. Corolla more than | inch long 

 Corolla less than ^ inch long ... 



9. CoroUa tube funnel-shaped 

 CoroUa tube cylindric ... 



10. Leaves glabrous 

 Leaves pubescent beneath 



11. Inflorescence axiUary ... 

 Inflorescence terminal ... 



6. 

 3. 

 4. 

 11. Avicennia. 



1. Lantana. 



5. 



2. Lippia. 



3. Stachytarpheta. 



4. Verbena. 



11. 

 7. 



8. Vitex. 



8. 

 9. 

 10. 

 7. Gmelina. 



9. Clerodendron. 

 6. Premna. 



10. Caryopteris. 



5. Callicarpa. 



6. Premna. 



1.— LANTANA. 

 Key to species. 



Fruit in a round or oblong head ... 1. Camara^ 

 Fruit in a linear spike ... ... 2; triflora. 



1. L. Camara, Linn. ; Benth. Fl. Hongk. 268. Very common in 



Hongkong, Kowloon, and Hongkong New Territory. Fl. 

 orange-red, purple or white, all the year. 



2. L. triflora, Linn. ; Bot. Mag. t. 1449. Wanchai and on Bowen 



Road, Hongkong, Fl. pink, . 



2.— LIPPIA. 



1. L. nodiflora, Michx. ^ Clarke in Hook. f. Fl. Brit. Ind. iv. 563. 

 Mt. KeUet, Hongkong ; Kowloon, Hongkong New Terri- 

 tory ; seashore at Swatow. Fl. pinkish-purple to white, 

 July. 



3.— STACHYTARPHETA. 



1. S. iudica, Vahl ; Clarke 1. c. 564. Common on roadsides in 

 Hongkong and Kowloon, Fl. blue, all the year. 



