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In botany, leaf shape is a description of the form of the part of a plant known as the leaf. It is characterised with the following terms (with botanical Latin in italics in brackets) to describe the shape of leaves: * Acicular ('): Slender and pointed, needle-like * Acuminate (''ラテン語:acuminata''): Tapering to a long point * Acute: Pointed, having a short sharp apex angled less than 90° * Aristate (''ラテン語:aristata''): Ending in a stiff, bristle-like point * Asymmetrical: With the blade shape different on each side of the midrib * : Arising from the root crown, bulb, rhizome or corm, etc., as opposed to cauline * Bipinnate (''ラテン語:bipinnata''): Each leaflet also pinnate * Caudate: Tailed at the apex * : Borne on the stem, as opposed to basal * Compound: Not simple; the leaf is broken up into separate leaflets, and the leaf blade is not continuous * (''ラテン語:cordata''): Heart-shaped, with the petiole or stem attached to the cleft * Cuneate (''ラテン語:cuneata''): Triangular, stem attaches to point * Deltoid (''ラテン語:deltoidea'') or deltate: Triangular, stem attaches to side * Digitate (''ラテン語:digitata''): Divided into finger-like lobes * Elliptic (''ラテン語:elliptica''): Oval, with a short or no point * Entire: Having a smooth margin without notches or indentations * Falcate (''ラテン語:falcata''): Sickle-shaped * (''ラテン語:fenestrata''): "Windowed" with holes (e.g. ''Monstera deliciosa'' or ''Aponogeton fenestralis''), or window-like patches of translucent tissue. (cf. Perforate) * Filiform (''ラテン語:filiformis''): Thread- or filament-shaped * Flabellate (''ラテン語:flabellata''): Semi-circular, or fan-like * (''ラテン語:hastata''), spear-shaped: Pointed, with barbs, shaped like a spear point, with flaring pointed lobes at the base * Laciniate: Very deeply lobed, the lobes being very drawn out, often making the leaf look somewhat like a branch or a pitchfork * Laminar: Flat (like most leaves) * Lance-shaped, lanceolate (''ラテン語:lanceolata''): Long, wider in the middle * Linear (''ラテン語:linearis''): Long and very narrow * Lobed (''ラテン語:lobata''): With several points * Mucronate: Ending abruptly in a sharp point〔(Mucronate ), Answers.com, from Roget's Thesaurus.〕 * Obcordate (''ラテン語:obcordata''): Heart-shaped, stem attaches to tapering point * Oblanceolate (''ラテン語:oblanceolata''): Top wider than bottom * Oblong (''ラテン語:oblongus''): Having an elongated form with slightly parallel sides * Obovate (''ラテン語:obovata''): Teardrop-shaped, stem attaches to tapering point * Obtuse (''ラテン語:obtusus''): Blunt, forming an angle > 90° * Orbicular (''ラテン語:orbicularis''): Circular * Ovate (''ラテン語:ovata''): Oval, egg-shaped, with a tapering point * Palmate (''ラテン語:palmata''): Consisting of leaflets〔(【引用サイトリンク】 work = Flora of New South Wales )〕 or lobes〔(【引用サイトリンク】 palmate (adj. palmately) )〕 radiating from the base of the leaf. * Pandurate: fiddle-shaped * Pedate (''ラテン語:pedata''): Palmate, with cleft lobes * * Pedatifid (''ラテン語:pedatifida''): Nearly pedately divided, but not as deeply * Peltate (''ラテン語:peltata''): Shield-shaped with stem attached underneath (cf. pelta) * (''ラテン語:perfoliata''): Stem through the leaves * (''ラテン語:perforata''): marked with patches of translucent tissue, as in ''Crassula perforata'' and ''Hypericum perforatum'', or perforated with holes (cf. "Fenestrate") * Pinnate (''ラテン語:pinnata''): Two rows of leaflets * * Odd-pinnate, imparipinnate: Pinnate with a terminal leaflet * * Paripinnate, even-pinnate: Pinnate lacking a terminal leaflet * * Pinnatifid and pinnatipartite: Leaves with pinnate lobes that are not discrete, remaining sufficiently connected to each other that they are not separate leaflets. * * Bipinnate, twice-pinnate: The leaflets are themselves pinnately-compound * * Tripinnate, thrice-pinnate: The leaflets are themselves bipinnate * * Tetrapinnate: The leaflets are themselves tripinnate. * Pinnatisect (''ラテン語:pinnatifida''): Cut, but not to the midrib (it would be pinnate then) * Plicate (''ラテン語:plicatus'', ''ラテン語:plicata''): folded into pleats, usually lengthwise, serving the function of stiffening a large leaf. * Pungent (''ラテン語:spinose''): Having hard, sharp points. * Reniform (''ラテン語:reniformis''): Kidney-shaped * Retuse: With a shallow notch in a broad apex * Rhomboid (''ラテン語:rhomboidalis''): Diamond-shaped * Round (''ラテン語:rotundifolia''): Circular * Sagittate (''ラテン語:sagittata''): Arrowhead-shaped * Simple: Leaf blade in one continuous section, not divided into leaflets (not compound) * Spear-shaped: see Hastate. * Spatulate, spathulate (''ラテン語:spathulata''): Spoon-shaped * (''ラテン語:subulata''): Awl-shaped with a tapering point * Subobtuse (''ラテン語:subobtusa''): Somewhat blunted, neither blunt nor sharp * Sword-shaped (''ラテン語:ensiformis''): Long, thin, pointed * : Circular in cross-section; more or less cylindrical without grooves or ridges. * * Semiterete: Rounded on one side, but flat on the other. * Trifoliate (''ラテン語:trifoliata''), trifoliolate (''ラテン語:trifoliolata''), or ternate (''ラテン語:ternata''): Divided into three leaflets * Tripinnate (''ラテン語:tripinnata''): Pinnately compound in which each leaflet is itself bipinnate * Truncate (''ラテン語:truncata''): With a squared-off end * Undulate (''ラテン語:undulatus''): Wave-like * Unifoliate (''ラテン語:unifoliata''): With a single leaf ==See also== * Sinus (botany) * leaflet and rachis * petiole and plant stem 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Leaf shape」の詳細全文を読む スポンサード リンク
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