LIST OF AUTHORITIES 
“Ve Natural History of Plants.” Kerner. 
“A Student's Text-Book of Botany.” Vines. 
_ “Handbook of the British Flora.” Bentham. 
“The Fertilisation of Flowers.” Miiller. 
“Physiology of Plants.” Darwin and Acton. 
| “Flowering Plants and Ferns.” Wallis. 
“British Wild Flowers and Insects.” Lord Avebury. 
“Buds and Stipules.” Lord Avebury. 
“Structural Botany.” Asa Gray. 
“Climbing Plants.” Darwin. 
