CHAP, v.] THE GENUS COFFEA. 91 



limb. I have given the section of this flower, 

 that my readers may compare it with the sec- 

 tion of the flower of the Cinchona in fig. 36, 

 in p. 87, and may see the general resemblance 

 which connects the two plants in the same order, 

 and the diff*erences which mark them to be of 

 different genera. Fig. 38 

 is a tuft of flowers of Hon- 

 deletia odorata. Wendlandia 

 is nearly allied to Ronde- 

 letia ; as is the magnifi- 

 cent Portlandia grandiflora^ 

 which somewhat resembles 

 Brugmansia lutea in shape 

 though not in colour, as its fig. 38.— part of the hkad 



„ - . OF FLOWERS OF RoNDELETIA. 



flowers are white. 



THE GENUS COFFEA. AND ITS ALLIES. 



The Coff-ee-tree {Coffea arahicd) differs from 

 the other Rubiacese in the tube of its calyx 

 being very short and disappearing when the 

 ovary begins to swell ; and in the filaments of 

 the stamens being sufiiciently long to allow the 

 anthers to be seen above the throat of the 

 corolla (see a in Jig. 39). The limb of the 

 corolla ifi) is five-cleft, and the style (c) bifid. 

 Each ovary when its flower falls, becomes dis- 

 tended into a berry {d) or rather drupe, con- 

 taining the nut e, in which are two seeds, flat 



