124 



21. Corolla tube slender, curved 

 CoroUa tube short, straight 



22. Stipules hooked ... 

 Stipules straight ... 



23. Fruits separate, dry, capitate 

 Fruits coherent 



24. Tree 



Diffuse or climbing shrub 



25. Leaves verticillate 

 Leaves opposite ... 



26. Leaves linear, not cordate 

 Leaves cordate, lanceolate 



27. Stem creeping, with reniform leaves 

 Leaves not reniform 



28. Small diffuse herb, with small soli- 



tary axillary flowers ... 

 Flowers not small, solitary and 

 axillary 



29. Fruit obcordate, compressed, much 



wider than long 

 Fruit cylindric or ovate, much 

 longer than wide 



30. Capsule loculicidal between distant 



calyx teeth 

 Capsule septicidal between contigu- 

 ous calyx teeth or indehiscent 



31. Seeds minute, angular 

 Seeds globose, concave ... 



26. Chasalia (p. 133). 

 25. Psychotria (p. 133). 



3. Uncaria (p. 125). 



23. 

 2. Adina (p. 124). 



24. 

 1. Cepkalanthus {p. 12^ 

 23. Morinda (p. 133). 

 26. 

 27. 

 34. Galium (p. 135). 

 33. Rubia (p. 135). 



27. Geophila (p. 133). 



28. 



7. Dentella (p. 125). 



29. 



11. Ophiorrhiza (p. 129) 



30. 



31. 



8. Hedyotis, etc. (p. 125 



9. Oldenlandia (p. 128) 

 10. Anotis (p. 128). 



1 .— CEPH ALANTHTJS. 



1. C. occidentalis, Linn. ; C. naucleoides, DC. ; Hook. f. Fl. Bri 

 Ind. iii. 24. On the bank of a stream near Sanwai, Honj 

 kong New Territory ; Hoifung ; North-west River. F 

 white, August to October. 



2.— ADINA. 



Key to species. 



1. Heads racemose 1. racemosa. 



Heads solitary ... ... ... 2, 



2. Heads axillary ; leaves cuneate acu- 



minate 2. globiflora. 



Heads terminal ; leaves ovate acute 3. rubella. 



1. A. racemosa, Miq. ; Maxim, in Mel. Biol. ix. 270. Liencho 



River. Fl. yellowish, August. 



2. A. globiflora, Salisb. ; Benth. Fl. Hongk. 146. Common on th 



sides of strea,ms, Hongkong ; on the Lanf a Mt., Hoifung 

 Sanning ; Lienchow River ; Lofoushan. Fl. white, Jul' 



3. A. rubella, Hance'm Journ. Bot. 1868, 114. Swatow ; Liei 



chow. North and West Rivers. Fl. very pale rose, July 



