TERXSTRCEMIACE/E 239 



hamato-inflexed. The radicle is of great size, thick, fleshy, 

 and bent or incurved in Caryocar, and very long and spirally 

 coiled in Anthodiscus, with the short cotyledons in the centre 

 of the helix. 



Cotyledons. Very few of this Order are cultivated in 

 gardens, and still less often are they raised from seeds. The 

 Camellia is most common, while Marcgravia and Stuartia 

 are sometimes grown. The cotyledons of Camellia theifera 

 (fig. 210) swell up somewhat during germination, bursting the 

 woody testa, but otherwise do not alter in size and shape. 

 They form a hemispherical mass occupying the interior of the 

 seeds, and are subterranean. They assume more or less of 

 a green colour should they be exposed to light during germina- 

 tion by the bursting of the testa and removal of the soil. 



It is probable that the cotyledons of other species and 

 genera are subterranean even after germination, as for instance 

 in the case of Caryocar, Pelliciera, Kielmeyera, and others. 



Camellia theifera, Griff. 



Capsule woody, dehiscing loculicidally, few-seeded. 



Seeds large, globose- ovoid, more or less flattened around the 

 bilum, and frequently much flattened on one side by mutual 

 pressure, attached to the axile placentas, and pendulous ; seed- 

 coat woody brown, of two layers, the inner, tegmen, of a deep shining 

 chocolate colour ; hilum oval, frequently if not always attended by 

 three more or less deep and conspicuous depressions which probably 

 indicate the positions of aborted ovules ; rapbe (best seen when tbe 

 inner coat separates from tbe outer) consisting of a broad trunk 

 proceeding from tbe bilum close to tbe upper end of tbe seed, wbere 

 tbe cbalaza ramifies extensively and spreads over tbe testa on botli 

 sides of this main trunk ; radicle superior, close to the hilum. 



Endosperm absent. 



Embryo large, flesby, straight, pale yellowish-white; cotyledons 

 equal and each occupying half tbe interior of tbe seed, to the sbape 

 of which it conforms, flat on tbe opposed faces and much rounded 

 on tbe back in tbe round seeds, but more or less and variously 

 angled when the seed happens to be compressed on one or more 

 sides ; plumule very small, towards tbe base of the cotyledons ; 

 radicle very small, included between tbeir base. 



Seedling (fig. 210). 



Primary root long, stout, tapering very slightly, becoming 



