NOMENCLATURE OF THE FLOWER. 87 



large, fleshy, and succulent calyx, becomes a berry. In the straw- 

 berry and cashew-nut, it is formed from the receptacle ; in the rasp- 

 berry and adonis, of the seed; in the marvel of Peru, of the nectary ; 

 and in the garden burnet, of the tube of the corolla, which hardens 

 and shuts for the purpose. 



CONE OR STROBILE. 



48. The cone has not received any botanical language 

 requiring our notice. It is only said to assume a variety 

 of forms in different vegetables. 



OF THE SEED. 



49. The parts of a seed already described in the Ele- 

 ments of Botany, are the hilum or eye, the testa or 

 seed-coat, the cotyledons or seed-lobes, and the em- 

 bryo or heart. 



These parts are beautifully seen in the bean, more particularly 

 after macerating it in water. (See Elements of Botany, p. 36.; 



50. The less essential parts of a seed are, the pellicle, 

 the tunic, the seed-down, the tail, the beak and the 

 wing. 



Seeds are also occasionally furnished with spines, hooks, scales, 

 and crested appendages, particularly a little gland-like part near the 

 eye, sometimes denominated strophiolum, as in the asarum. 



51. Pellicle : The pellicula closely adheres to the 

 outside of some seeds, so as to conceal the proper colour 

 and surface of their skin. 



The pellicle may be membranous, and often downy, as in the 

 convolvulus, or mucilaginous, not perceptible till the seed is 

 moistened, as in the vervain. 



