_Cucullate_, hooded, or hood-shaped, rolled up like a cornet of paper, or a hood (_cucullus_), as the spathe of Indian Turnip, 75. _Culm_, a straw; the stem of Grasses and Sedges, 39. _Cultrate_, shaped like a trowel or broad knife. _Cuneate_, _Cuneiform_, wedge-shaped, 53. _Cup-shaped_, same as cyathiform or near it. _Cupule_, a little cup; the cup to the acorn of the Oak, 122. _Cupular_, or _Cupulate_, provided with a cupule. _Cupuliferous_, cupule-bearing. _Curviveined_, with curved ribs or veins. _Curviserial_, in oblique or spiral ranks. _Cushion_, the enlargement at the insertion or base of a petiole. _Cuspidate_, tipped with a sharp and stiff point or _cusp_, 54. _Cut_, same as incised, or applied generally to any sharp and deep division, 55. _Cuticle_, the skin of plants, or more strictly its external pellicle. _Cyaneous_, bright blue. _Cyathiform_, in the shape of a cup, or particularly of a wine-glass. _Cycle_, one complete turn of a spire, or a circle, 70. _Cyclical_, rolled up circularly, or coiled into a complete circle. _Cyclosis_, circulation in closed cells, 149. _Cylindraceous_, approaching to the _Cylindrical_ form, terete and not tapering. _Cymbæform_, or _Cymbiform_, same as boat-shaped. _Cyme_, a cluster of centrifugal inflorescence, 77. _Cymose_, furnished with cymes, or like a cyme. _Cymule_, a partial or diminutive cyme, 77. _Deca-_ (in words of Greek derivation), ten; as _Decagynous_, with 10 pistils or styles, _Decamerous_, of 10 parts, _Decandrous_, with 10 stamens, &c. _Deciduous_, falling off, or subject to fall; said of leaves which fall in autumn, and of a calyx and corolla which fall before the fruit forms. _Declinate_, _declined_, turned to one side, or downwards. _Decompound_, several times compounded or divided, 59. _Decumbent_, reclined on the ground, the summit tending to rise, 39. _Decurrent_ (leaves), prolonged on the stem beneath the insertion, as in Thistles. _Decussate_, arranged in pairs which successively cross each other, 71. _Deduplication_, same as chorisis. _Definite_, when of a uniform number, and not above twelve or so. _Definite Inflorescence_, 72. _Deflexed_, bent downwards. _Deflorate_, past the flowering state, as an anther after it has discharged its pollen. _Dehiscence_, the regular splitting open of capsule or anther, 103, 119. _Dehiscent_, opening by regular dehiscence, 119, 123. _Deliquescent_, branching off so that the stem is lost in the branches, 32. _Deltoid_, of a triangular shape, like the Greek capital Δ. _Demersed_, growing below the surface of water. _Dendroid_, _Dendritic_, tree-like in form or appearance. _Dendron_, Greek for tree. _Deni_, ten together. _Dens_, Latin for tooth. _Dentate_, toothed, 55. _Denticulate_, furnished with denticulations, or little teeth. _Depauperate_, impoverished or starved, and so below the natural size. _Depressed_, flattened or as if pressed down from above. _Derma_, Greek for skin.