GLOSSARY OF TERMS USED IN 

 THIS WORK. 



The terms included here are exclusively such as it has been found necessary to 

 use in the foregoing work. The list embraces all likely to puzzle the average reader 

 unfamiliar with Biology. Some have been incidentally explained in the text and 

 are again included here. The list may be taken as representative of the minimum 

 of terminology necessary for those engaged in Nature Study, and it is hoped that 

 teachers to whom the expressions are unfamiliar will take pains to master their 

 exact significance. 



achene: a dry single- seeded non- 

 splitting fruit. 



aetinomorphic : rayed in form, 

 i.e. with radial symmetry. 



adnate : applied to the union of 

 unlike parts, e.g. stamens and 

 petals. 



adventitious : generally applied 

 to roots or buds developed on 

 unusual parts of the plant ; 

 adventitious roots may in the 

 absence of a taproot develop 

 from the base of the stem. 



ala : wing ; alate : winged. 



angiosperm : a plant in which 

 the ovules are contained with- 

 in closed carpels, in contrast 

 to gymnosperms, where the 

 ovules develop in an exposed 

 position. 



Annelida : a class of ringed or 

 segmented worms. 



anther : the portion of the stamen 

 in which the pollen is formed. 



antheridium : the organ pro- 

 ducing male elements in the 

 group to which ferns and 

 mosses belong. 



anthocyan: a type of pigment 

 widely distributed amongst 

 higher plants. 



archegpnium : the organ produc- 

 ing female elements in ferns, 

 mosses, and liverworts. 



arillus : a growth upon a seed, 

 commonly fleshy or hairy, e.g. 

 the fleshy cup upon the seed 

 of the Yew. 



assimilation : the process in 

 living bodies in which food 

 materials are transformed into 

 living substance. 



awn : a bristle-like structure 

 occurring in the flowers of 

 certain grasses. 



bast : the tissue in the fibro- 

 vascular bundles which serves 

 to conduct elaborated food 

 materials. 



berry : a fruit in which all the 

 parts around the seeds except 

 the skin become fleshy. 



bract : a leaf in the axil of which 

 a flower or flowering branch 

 arises. 



bracteole : a small bract some- 

 times found on the flower- 

 stalk of plants (secondary 

 bract). 



bud : an undeveloped shoot. 



339 



