I] 



EXAMPLES OF PHYLLOTAXY 



13 



Meanwhile we may say that the principal varieties of 

 leaf-insertion, with regard to the shoot, are as follows. 



The leaves are opposite or decussate in 



Horse-chestnut Field Maple 



Sycamore Mistletoe 



Elder Viburnum Lantana 



Viburnum Opulus Honeysuckles 



Thuja Cupressus 



Ash Privet 



Ling Box. 



Clematis 

 Norway Maple 

 Dogwood 

 Aucuba 



Symphoricarpos 



Lilac 



Loiseleuria 



The leaves are alternate and spirally disposed in 



Barberry 

 Holly 

 Whin 

 Laburnum 

 Roses 

 Ribes 

 Azalea 

 Myrica 

 Walnut 

 and in most Wi 



Bilberry 

 Rhamnus 

 Broom 

 Primus 

 Hawthorn 

 Arbutus 

 Daphne 

 Alder 

 Oaks 

 lows and Conifers. 



Tamarisk 



Furze 



Robinia 



Pyrus 



Blackberry 



Rhododendron 



Hippophae 



Birch 



Poplars, 



The leaves are alternate and distichous in 



Lime Vine Virginian Creeper 



Planes Ivy Cranberry 



Elms Hornbeam Chestnut 



Beech Hazel Cherry Laurel. 



The leaves are in whorls of three or four in 

 Erica tetralix Juniper Erica ciliaris 



Erica cinerea Empetrum Erica vagans 



Erica carnea. 



