87 



1 Anthers exserted. Leaves linear. Flowers 



cymose. Shrubs or trees. NuxiA. 



1 Anthers exserted. Leaves tomentose. Flowers 



panicled. Shrubs or trees. Chilianthtjs. 



1 Anthers included. Leaves tomentose. Flowers 



cymose. Shrubs. Buddleia. 



1 G-omphostigma, Turcz. 

 sooparioides, Turcz. 



2 Nuxia, Lam. 

 congesta. R. Br. B* 

 floribunda, Bth. B> 

 oppositifolia, Bth. A- 

 sp. {Wood 1862). B. 



3 Ohilianthus, Burch. 

 arboreus, Bth. A. 

 dyssophilus, Bth. AB. 

 oleaceus, Burch. A. 



List of Species. 



4 Buddleia, Linn. 



^' auriculata, Bth. 



pulchella, N. E. Brown. 

 salviaefolia, Lam. 

 Woodii, Gilg. 



5 Strychnos, Lmw, 



Atherstonei, Harv. 

 Gerrardi. N. E. Brown. 

 Henningsii, Gihj. 

 spinosa, Lam. 



Z. 

 DE. 

 A-F. 



B. 



A. 



A. 



A. 



AB. 



ORDER CIX. GENTIANE^. 



Gentianeae are found in most countries, aud contain a bitter 

 principle which is used medicically. Gentiana lutea, a European 

 species, is said to be one of the earliest known medicines. Erythraea 

 centaurea, the "Centaury," has been used as a substitute for it. The 

 Water Trefoil, or Buckbean {Menyanthes trifoliata), has the same 

 properties, and its intensely bitter root is said to be an excellent tonic. 

 None of our species have been tested in this direction so far as known 

 to us. 



Number of species more than 500, 



Floating herbs, with long petioled cordate leaves. 

 Terrestrial herbs. Anthers exserted. Flowers red, 



purple, or white. 

 Terrestrial herbs. Anthers included. Stigma 



globose. Flowers yellow. 

 Terrestrial herbs. Anthers iucluded. Stigma 



LlMNANTHEMUM. 



Chikonia. 



Seb^ej 



