BUBIACE^. 



303 



In. Damnacanthus, spinous shrubs of China, Japan and Bengal, the 

 flowers are the same in construction with ovarian cells and stylary 

 divisions 2-4. The ovule 



also is descending ; and, as MUekeiia repens. 



in Frismatomeris and for the 

 same reason, the embryonic 

 radicle is inferior. The 

 flowers are soUtary or ge- 

 minate. They have the 

 same organization as in 

 MitcheUa (fig. 294), gene- 

 rally referred to another 

 series and inhabit, one 

 Japan, the other North 

 America. They are peren- 

 nial climbing herbs and 

 perhaps only a section of 

 Damnacanthus. The sti- 

 pules are membranous, not 

 spuious,in the tr-aeMitcheUa, 

 and the axillary or terminal 

 geminate flowers have their 

 ovaries united in a common 



receptacle, instead of being independent like those of Damnacanthus ; 

 a character observed in various honeysuckles.' 



Gremaspora (fig. 296), with Alberta, has been ranged in a separate 

 tribe (Albertew) of Rubiacece, with solitary descending ovule, the 

 corolla of which is contorted instead of being valvate. Otherwise, 

 their resemblance to Ganthmm- is very close. The stamens are 

 inserted in the throat of the corolla, and the fleshy fruit encloses one 

 or two descending and albuminous seeds. In the true Gremaspora, 

 the flowers are generally pentamerous ; the style is not divided, and 

 the horny perisperm is continuous. In those named Polyspharia, 

 the flower is-in four or flve parts ; the style is ordinarily divided into 



Fig. 294. Long. sect, of two-flowered 

 inflorescence ()). 



' In DicMl'Mthe, of Ceylon and Borneo, there 

 are, not two but, a greater number of flowejfs 

 forming a false capitule. The corolla is curved 

 and subbilobed. Sahmannia and Phialanthus, 

 American shrubs, have also many-flowered 



cymes ; but they are axillary. The corolla is 

 valvate or slightly imbricate. The anthers of 

 the former are basifixed, of the latter, dorsifixed. 

 All have a dascending ovule with dorsal 

 raphe. 



