GLOSSARY. 



Acicular, needle-shaped, e.g. Pine needles, as in Fig. 6, p. 22. 

 Acuminate, with a drawn-out, tapering apical point, as in Fig. 10, p. 28. 

 Acute, distinctly pointed, but not drawn out, at the apex, as in Fig. 10, 



p. 28. 



Adnate, attached along the whole of the side, p. 19. 

 Adventitious, arising in wrong order or position, p. 216. 

 Afferent, carrying to or towards, p. 80. 

 Air-cavity, the large intercellular space into which the stoma opens, 



p. 101. 



Alternate, of leaves inserted singly on nodes at different levels, p. 6. 

 Amylogenesis, the process of building up starch from the elements of 



carbon-dioxide and water, p. 135. 

 Angular divergence, the angle between leaves projected on the same 



spiral or circle, p. 6. 

 Anther, that part of the stamen in which the pollen-grains are formed, 



p. 71. 



Antherozoids, male motile sexual organs of certain plants, p. 76. 

 Apex, the tip of the leaf, shoot, &c., p. 28. 

 Appressed, closely pressed on to a surface, p. 37. 

 Arachnoid, like spider's webs. 

 Arcuate, venation where the secondaries arch forward towards the apex, 



p. 35. 



Arenicolous, growing best in sand. 

 Assimilation, see Photo-synthesis, p. 95. 

 Attenuate, tapering off. 

 Auricle, a small ear-like lobe, p. 205. 

 Axis, the part bearing lateral organs, such as the stem, flower-stalk, &c., 



p. 7. 



Base, the part of the leaf nearest the insertion, p. 23. 

 Bi-facial, with the upper and lower faces different in construction, p. 146. 

 Bloom, the peculiar surface so easily rubbed off grapes, plums, &c., due 



to a thin superficial layer of wax, p. 278. 



Caducous, falling very early, much earlier than deciduous, p. 21. 

 Callous, of a horny appearance. 



W. II. 21 



