258 



NATURAL mSTORY OF PLANTS. 



short Style with two branches, the stigmatiferous extremities of which 

 expand to a small head, and the two ovarian cells, one anterior, the 

 other posterior, contain each, inserted near the base of the mternal 

 angle, an ascending, nearly erect, anatropoas ovule, with micropyle 



SuUa tinctorum. 



Fig. 224. Flower {{).. 



Fig. 225. Diagram.' 



Fig. 226. Long. sect, of flower. 



directed downwards and outwards.' The fruit, - didymous or more 

 generally reduced to a single carpel (fig. 227-229), is fleshy, with 

 pericarp of little thickness, and encloses one or two seeds, convex 



Eubia tinelormn. 



Fig. 227. Long. sect, of 

 dicoccous fruit (f). 



Fig. 230. 

 Seed (f). 



Fig. 228. Mono- 

 spermous fruit. 



Fig. 229. Long. 



sect. of.monoapermouB 



fruit. 



externally, concave internally, where the wide hilum is united to the 

 pericarp by a short thick funicle occupying the cavity. The seeds 

 have a thick horny' albumen, surrounding a curved embryo with 

 inferior conical radicle and foliaceous cotyledons directed upwards. 

 Eubia tinctorum is a perennial herb, with a thick stem, sending out 



323). According to the same author there are 

 8 to 12 in different species of Galium, Aaperula 

 and Crucianella. 



1 The petals should be connected by a line in 

 this diagram of a flower exceptionally tetra- 

 merous, like that of Galium. 



2 This micropyle is most frequently indicated, 

 in this and many other genera, only by a slight 

 indentation ; so that in this case the ovules 



have not a true coat; at least in comparison 

 with other types where it is somewhat more 

 developed, it is admitted to exist but reduced 

 to an extremely short cushion. 



' Without afBurming that the cushion called 

 tegument of the seed is produced by a change 

 in superficial tissues, but that it cannot result 

 from the transformation of an ovular envelope 

 which never existed at this point. 



