182 FARM WEEDS OF CANADA 



MALE FLOWER The flower that bears only the stamens which con- 

 tain, the pollen. See "Perfect." 



NUTLET A small nut or hard fruit, not opening to shed the 



contained single seed. 



PANICLE A loose, irregularly compound cluster of flowers, 



borne on flower stalks. 



PAPPUS See page 141, under Sunflower family. 



PERENNIAL See page 11. 



PERFECT FLOWER A flower that bears both pistils and stamens. 



PERSISTENT Organs remaining attached to those bearing them 

 after the growing period. 



PINNATIFID (of leaves) Cut like a feather, from both edges inward 

 to the midrib. 



PISTIL The female organ of the flower, consisting of the ovary, 



which contains the seed, the stigma, a soft viscid part 

 of the pistil which receives the pollen grains, and 

 the style which supports the stigma. 



POD Any dry fruit, opening by valves, slits, etc., to shed 



the contained seeds. 



RACEME A cluster of flowers borne upon footstalks of an equal 



and noticeable length, along a common stalk. 



RECEPTACLE The enlarged top end of a flower stalk or of the foot- 

 stalk of a flower head. See page 141 under Sun- 

 flower family. 



REGULAR FLOWER With the divisions of each part uniform in shape 

 and structure. 



ROOTSTOCK A creeping stem below the surface of the ground. 

 SCALE See page 23, under "The Seed." 



SEED See Fruit. 



STAMEN The male organ of the flower, composed of the anther, 



which holds the fertilizing pollen grains, and the 

 support called the filament. 



SPIKE An elongated flower cluster, with the flowers stalkless 



or nearly so along a common stalk. 



SPIKELET See page 23, first paragraph. 



TUFTED See page 22, under Grass family. 



TAP-ROOT A generally strong deep root which is the prolongation 

 downwards of the main stem. 



WINTER ANNUAL See page 11. 



