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. 



Exsertcd. — 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. 

 In deh (seen t. — Not opening. 

 Inferior. — See p. 39. 

 I nflc. red. —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. — Haying 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. 

 Foment. — 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. 



