CHAPTER VI 



A GLOSSARY OF BOTANICAL TERMS 



ACHENE, a dry, indehiscent i -seeded fruit, such as the single ' seed ' 



of a Ranunculus. 

 ACICULAR, applied to linear leaves which are stiff and needle-like, 



such as those of Pine. 

 ACUMINATE, suddenly narrowed at the top and then prolonged into 



a point. 



ACUTE, tapering to a point. 

 ADHESION, the union of dissimilar parts of a flower, such as the 



petals and sepals ; cf . Cohesion. 

 ADVENTITIOUS ROOTS, those which appear as outgrowths from the 



stem or leaves. 



ESTIVATION, the arrangement of the petals in the unexpanded bud. 

 ALTERNATE, applied to leaves which are not arranged opposite to 



one another on the stem. 

 AMPLEXICAUL, when a leaf, bract, or stipule more or less embraces 



the stem. 



ANDRCECIUM, the male organs or stamens, considered as a whole. 

 ANGIOSPERM, a Flowering Plant whose ovules are enclosed in 



ovaries ; cf . Gymnosperm. 

 ANNUAL, applied to plants which pass through their life-history in 



one year and then die. 



ANTHER, the upper portion of a stamen containing pollen. 

 APETALOUS, without petals, or with very small rudimentary ones. 

 AQUATIC, growing actually in water. 

 ARILLUS, a fleshy covering of some seeds. 

 ARISTATE, when the point of a leaf is fine like a hair. 

 ARTICULATE, jointed, applied to organs which can be separated 



(without tearing) into several similar parts, e.g. an articulated 



capsule. 

 ASCENDING, applied to stems which are first prostrate and then 



rise more or less vertically. 

 ASEXUAL, applied to the reproduction by organs other than the 



stamens and carpels. 



ASSOCIATION, a colony or community of plants living together. 

 AWN, a thread-like extension of a seed or other organ, such as in 



Barley or in Anemone alpina. 



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