GLOSSARY OF BOTANICAL TERMS USED. xxi 



AREOLE : a space marked out in any way ; a small cell or cavity. 

 ARIL or ARILLUS : an appendage arising from the hilum and more or 



less enveloping the seed, as the mace of the nutmeg. 

 ARISTA : a bristle-like appendage, common in grasses. 

 ARMED : provided with spines or thorns. 

 ARTICULATE : jointed. 

 ATTENUATE : narrowed, tapered. 

 AURICLE : a small lobe ; an ear-shaped appendage. 

 AWN : a bristle-like appendage longer than an arista. 

 AXIL : the upper angle formed between the axis and any organ 



arising from it, as that between a stem and a leaf on it. 

 AXILE : belonging to the axis. 

 AXILLARY : situated in an axil. 

 AXIS : an imaginary line around which organs are developed ; any 



member which bears lateral subsidiary members. 



BACCATE : berry-like. 



BARBELLATE : provided with short, stiff hairs, especially if retrorse. 



BEAK : a narrowed, usually solid prolonged tip ; not used for leaves. 



BERRY : a pulpy fruit with immersed seeds. 



BICONVEX : convex on both sides. 



BRACT : a modified, reduced leaf, usually on an inflorescence, often 



bearing a flower in its axil. 

 BRACTEOLE : a small bract, often on the petiole or immediately 



below or on the calyx. 

 BULB : a modified bud, usually underground and with fleshy scales 



or coats. 



BULBIL : a small, usually axillary bulb. 

 BULLATE : puckered ; a surface with portions thrown out which are 



convex on one side and concave on the other. 



CADUCOUS : falling off early. 



CAESPITOSE : tufted, as many grasses. 



CALLUS : an abnormally thickened part ; in grasses an extension of 



the flowering bract below its point of insertion adhering to the 



axis of the spikelet. 



CALYCINE : herbaceous ; resembling a calyx in texture. 

 CALYCULUS : a whorl of bracts outside the true calyx. 

 CALYPTRA : a cap-like covering of a flower. 

 CALYX : the outermost series of the parts of a flower ; also the 



enveloping parts of a flower with only one perianth-aeries. 

 CAMPANULATE : bell-shaped. 



