FISSURE, a straight slit in an organ for the discharge of its contents. FISTULOUS, hollow, like stems of grasses. FLABELLIFORM, fan-shaped, as the leaves of some palms. FLACCID, feeble, weak. FLAGELLUM, a runner, a weak creeping stem, bearing rooting buds at different points, as in the strawberry. FLEXUOSE, having alternate curvations in opposite directions. FLOCCOSE, covered with wool-like tufts. FLORETS, little florets forming a compound flower. FOLIACEOUS, having the form of leaves. FOLLICLE, a fruit formed by a single carpel dehiscing by one suture, which is usually the ventral. FOVEOLATE, having pits or depressions, called foveæ or foveolæ. FOVILLA, minute granular matter in the pollen grain. FROND, the leaf-like organ of ferns, bearing the fructification. FRONDOSE, applied to cryptogams with foliaceous or leaf-like expansions. FRUCTIFICATION, the seed or fruit of plants. FRUSTULES, the parts or fragments into which diatomaceæ separate. FRUTICOSE, shrubby. FUGACIOUS, evanescent, falling off early, as the petals of _Cistus_. FULVOUS, tawny, yellow. FUNGOUS, having the substance of fungi or mushrooms. FUNICULUS, the cord connecting the hilum of the ovule to the placenta. FURCATE, divided into two branches, like a two-pronged fork. FURFURACEOUS, scaly or scurfy. FUSCOUS, blackish brown. FUSIFORM, shaped like a spindle. G GALBULUS, the polygynœcial fruit of juniper. GAMOPETALOUS, same as monopetalous, petals united. GAMOPHYLLOUS and GAMOSEPALOUS, same as monophyllous and monosepalous, sepals united. GEMINATE, twin organs combined in pairs; same as binate. GEMMATION, the development of leaf-buds. GEMMULE, same as plumule, the first bud of the embryo. GENICULATE, bent like a knee. GERMEN, or GERM, a name for the ovary. GERMINAL VESICLE, a germ contained in the embryo-sac, from which the embryo is developed. GERMINATION, the sprouting of the young plant. GIBBOSITY, a swelling at the base of an organ, such as the calyx or corolla. GIBBOUS, swollen at the base, or having a distinct swelling at some part of the surface. GLABROUS, smooth, without hairs. GLAND, an organ of secretion consisting of cells, and generally occurring on the epidermis of plants. GLANDULAR HAIRS, hairs tipped with a gland, as in _Drosera_ and Chinese primrose. GLANS, nut, applied to the acorn and hazel-nut, which are inclosed in an involucre formed of consolidated bracts. GLAUCOUS, covered with a pale green bloom. GLOBOSE, round-shaped. GLOBULE, male organ of Chara. GLOCHIDIATE, barbed; applied to hairs with two reflexed points at their summits. GLOMERULE, a rounded cymose inflorescence, as in _Urtica_. GLUMACEOUS, chaffy. GLUME, a bract covering the organs of reproduction in the spikelets of grasses. GLUTEN, a highly nitrogenous substance found in seeds.