xiv Preface 



Cross-fertilization -The pollen of one flower comin 



into contact with the stigma of another. 

 Creeping A stem running along the ground and rooi 



ing at intervals. 



Deciduous 'Falling off; not evergreen. 

 Dentate Toothed. 

 Disc Flowers Tubular florets found in the center 



of composite flowers. 



Entire Smooth-edged; no teeth or divisions. 

 Evergreen Having green leaves at all times. 

 Fertile Capable of producing fruit. 

 Fertilization The quickening of the seed in the flo^ 



er ovaries by pollen from the anthers. 

 Filament. The thread-like part of a stamen. 

 Floret A small tubular flower, usually one of 



cluster. 



Glabrous Smooth; not rough or hairy. 

 Glaucus Covered wtih a whitish bloom. 

 Hirsute Covered wtih rather coarse hairs. 

 Imperfect Flowers with either stamens or pisti 



wanting. 

 Introduced Brought intentionally from other re 



gions. 

 Involucre A cup-shaped cluster of bracts surround 



ing a head or flower cluster. 

 Irregular With parts unequal in size or shape. 

 Lanceolate or lance-shaped Much longer than wide 



pointed at the end and tapering at the base. 

 Leaflet A single division of a compound leaf. 

 Linear Long, narrow, with parallel margins. 

 Lip Either division of a two-parted corolla; th( 

 broadened petal of an orchid. 

 Lobe A rounded division of a flower or leaf. 

 Midrib The central vein of a leaf. 

 Naturalized Floral immigrants that have becom< 



firmly established. 

 Nerve A single, unbranched vein or rib. 



