TO BOTANY, . 348 



CHAP. XV. 

 OF GEMMATION. 



GEMMATION is the construction of the gem or 

 bud, which is formed either of leaves, stipulae, pe- 

 tioles, or squamae. Those that are formed of leaves 

 will be considered in the next chapter, under the 

 head of Foliation ; the rest are distinguished into, 



PETIOLAR buds, which are either, 



Opposite; as in Ligustrum, Phiilyrea, Nyctanthes, 

 Syringa, Hypericum, Coriaria, Buxus, Jasminum, 

 Vaccinium, Arbutus, Andromeda, Ledurn, Daphne, 

 Laurus, Myrica, Linuaea, Diervilla, Lonicera, Euo- 

 nymus, Fraxinus, Acer, Esculus, Bignonia, Opulus, 

 Sambucus, and Psidium ; or 



Alternate ; as in Salix, Spiraea, Genista, Solanum, 

 Hippophae, Berberis, Ilex, Ribes, Juglans, Pistacia, 

 and Plumbago. 



STIPULACKOUS buds ; which are either, 



Opposite ; as in Cephalanthus and Rhamnus ca- 

 tharticus; or, 



Alternate; as in Populus, Tilia, Ulmus, Quercus, 

 Fagus, Carpinus, Corylus, Betula, Alnus, Ficus, and 

 Morus. 



STIPULACEO-PETIOLAR buds; which are 



Alternate ; as in Sorbus, Crataegus, Prunus, Me- 

 spilus germ. Pyrus, Malus, Cotoneaster, Amygdalus, 

 Cerasus, Padus, Melianthus, Rosa, Rubus, Vitis, Ro- 

 binia, Cytisus, Potentilla fruticosa, and Staphylea. 



ANOMALOUS, or irregular buds; as in Abies, Pi- 

 nus, and Taxus. 



In many plants the buds are wanting, as has been 

 shewn in Chap. 9. 



