CAPRIFOLIACE^] 49 



elliptic. The cotyledons of Triosteum pinnatifidum are 

 broadly oblong and trinerved, with the petioles connate, so 

 as to form a short tube around the axis. The leaves are 

 dimorphic. The two first pairs are lanceolate, while those 

 produced on the seedling when growth is resumed the 

 following spring are broader and lanceolate-elliptic, while 

 others are rhomboid and deeply trilobed on one side only, 

 with rounded sinuses, ovate lateral lobes and broadly tri- 

 angular terminal ones. The cotyledons of Lonicera Munroi 

 (tig. 427) are oblong-oval, with two pairs of lateral incurved 

 nerves arising at different levels on the midrib. The first four 

 pairs of leaves are broadly oval, entire, and suddenly, cuneate 

 at the base. The cotyledons of Viburnum Opulus (fig. 422) 

 differ from any of the above in being oblong, relatively longer, 

 narrower and sessile. They have two pairs of lateral nerves 

 .with a considerable interval between them, and they suddenly 

 taper to a connate base. The first pair of leaves are ovate 

 with two pairs of coarse lateral teeth or lobes each with 

 a strong nerve, arising alternately from the midrib. The 

 seedlings took nearly seven months to germinate in a green- 

 house temperature, from the 9th of October to the 1st of May 

 following. The leathery or subwoody endocarp splits along 

 the edges for the lower half of its length in order to favour the 

 exit of the cotyledons. 



Sambucus nigra, L. 



Ovary of two to five, usually three, carpels, two- to five-, usually 

 three-celled, each cell one-ovuled ; ovules pendulous, anatropous ; 

 micropyle superior. 



Fruit baccate, globose, glabrous, tipped with the persistent, 

 lobes of the calyx, two- to five-, usually three-seeded ; epicarp thin ; 

 mesocarp pulpy or juicy ; endocarp bony, whitish, acting as a pro- 

 tection to the seed. 



Seed narrowly oblong, obtuse at either end, conforming rather 

 closely to the interior of the bony endocarp ; testa very thin, 

 membranous ; raphe lateral, forming a ridge on the testa ; micropyle 

 and hilum basal at the upper end of the seed chalaza apical, at 

 the lower end of the seed. 



Endosperm copious, fleshy, transparent, white. 



Embryo straight, narrow, central, nearly as long as the endo- 



JI. B 



