GLOS SARY 
[The definitions of a glossary are often unsatisfactory. It is much better to con- 
sult the fuller explanations of the text by means of the index. The following glos- 
sary includes only frequently recurring technical terms. Those which are found only 
in reasonably close association with their explanation are omitted.] 
AKENE : a one-seeded fruit which ripens dry and seed-like. 
ALTERNATION OF GENERATIONS: the alternation of gametophyte and 
sporophyte in a life history. 
ANEMOPHILOUS : applied to flowers or plants which use the wind as agent 
of pollination. 
ANTHER: the sporangium-bearing part of a stamen. 
ANTHERIDIUM : the male organ, producing sperms. 
APETALOUS : applied to a flower with no petals. 
APOCARPOUS : applied to a flower whose carpels are free from one an- 
other. 
ARCHEGONIUM : the female, egg-producing organ of Bryophytes, Pteri- 
dophytes, and Gymnosperms. 
ASCOCARP : a special case containing asci. 
ASCOSPORE : a spore formed within an ascus. 
Ascus : a delicate sac (mother-cell) within which ascospores develop. 
ASEXUAL SPORE : one produced usually by cell-division, at least not by 
cell-union. 
CALYX : the outer set of floral leaves. 
CAPSULE: in Bryophytes the spore-vessel ; in Angiosperms a dry fruit 
which opens to discharge its seeds. 
CARPEL : the megasporophyll of Spermatophytes. 
CHLOROPHYLL : the green coloring matter of plants. 
CHLOROPLAST : the protoplasmic body within the cell which is stained 
green by chlorophyll. 
CONJUGATION : the union of similar gametes. 
COROLLA : the inner set of floral leaves. 
