184 THE INDIANA WEED BOOK. 



Divided. Cleft to the midrib ; compound. 

 Drupe. See p. 41. 



Embryo. A rudimentary plant in the seed. 



Endogen. See pp. 32, 44. 



Exogen. See pp. 33, 44. 



Exserted. Protruding out of, as the stamens out of the corolla. 



Fertile. Bearing seed. 



Fertilization. The mingling of the contents of a male and female cell; 



application of plant food to soils. 

 Filament. The stalk of an anther. 

 Follicle. See p. 42. 



Free. Separate from all other organs or parts. 

 Fruit. See p. 41. 



Gamopetalous. Having the petals more or less united. 



Glabrous. Devoid of hairs. 



Gland. A cell or group of cells which exudes a liquid. 



Globose. Spherical or nearly so. 



Glume. The scaly bracts of the spikelets of grasses and sedges. 



Hastate. Arrow-shaped with the basal lobes extending straight outward. 



Head. See. p. 40. 



Herb. See p. 32. 



Herbaceous. Leaf-like ; herb-like. 



Imperfect. Flowers with either stamens or pistils, not with both. 

 Indehiscent. Not opening. 

 Inferior. See p. 39. 

 Inflexed. Bent abruptly inward. 



Inflorescence. The mode of arrangement of flowers on the stem. 

 Involucre. A circle of bracts beneath a flower or flower cluster. 

 Irregular. A flower in which one or more of the petals or sepals are 

 unlike the others. 



Lanceolate. Much longer than broad and tapering to a point ; lance-shaped. 

 Leaflet. One of the divisions of a compound leaf. 

 Legume. A pod ; a simple dry fruit, splitting along both sides. 

 Lens-shaped. Having both sides curved; or with the form of a double 



convex lens. 



Linear. Elongate and narrow with sides nearly parallel. 

 Lobed. Deeply cleft or divided. 

 Lament. A jointed pod, constricted between the seeds. 



Midrib. The central vein or rib of a leaf. 

 Monodelphous. United in one set. 



Monoecious. Having the stamens and pistils in different flowers on the 

 same plant. 



"Naked. Lacking both calyx and corolla. 



Nut. A one-seeded fruit with a hard shell which does not split when 

 ripe. 



