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cordate: of a leaf blade, broad and notched at the base; heart-shaped.
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deltoid: triangular with the sides of about equal length.
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elliptic: oval in outline, widest at the centre.
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falcate: sickle-shaped.
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flabellate: fan-shaped, with a wedge-shaped outline and sometimes conspicuously plaited or nerved. eg. the leaf of Ginkgo.
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hastate: spear-shaped; of a leaf blade, narrow and pointed but with two basal lobes spreading approximately at right angles.
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lanceolate: of a leaf, about four times as long as it is broad, broadest in the lower half and tapering towards the tip.
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linear: very narrow in relation to the length, and with the sides parallel.
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lorate: of leaves, strap-shaped (moderately long with the two margins parallel).
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lyrate: deeply lobed, with a large terminal lobe and smaller lateral ones.
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mouse: clicking on this will take you to B & T World Seeds' homepage
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obcordate: of a leaf blade, broad and notched at the tip; heart-shaped but attached at the pointed end. cf. cordate
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oblanceolate: similar in shape to lanceolate but attached at the narrower end.
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oblique: of a leaf or leaflet, larger on one side of the midrib than on the other, i.e. asymmetrical.
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oblong: having the length greater than the width but not many times greater, and the sides parallel.
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obovate: similar in shape to ovate but attached at the narrower end.
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obtuse: blunt or rounded at the apex, the converging edges separated by an angle greater than 90 degrees.
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orbicular: circular or nearly so.
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oval: similar to elliptic but more rounded at the base and tip.
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ovate: shaped like a section through the long axis of an egg, and attached by the wider end. cf. ovoid.
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ovoid: egg-shaped (in three dimensions). cf. ovate.
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palmate: of a leaf, divided into several leaflets which arise at the same point.
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palmatifid: of a leaf, deeply divided into several lobes which arise (almost) at the same level. cf. pinnatifid.
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palmatisect: a condition intermediate between palmate and palmatifid, with the green tissue of the lamina completely divided into several segments, but the segments not fully separated at the base.
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pinnate: divided into pinnae; once-compound. cf. bipinnate, tripinnate.
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pinnatifid: cut deeply into lobes that are spaced out along the axis (of the leaf). cf. palmatifid.
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pinnatisect: dissected down to the midrib but having the segments confluent with it.
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pinnule: a leaflet of a bipinnate leaf.
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plicate: folded back and forth longitudinally like a fan.
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reniform: kidney-shaped.
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rhomboid: quadangular, with the lateral angles obtuse.
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runcinate: deeply lobed and with the lobes slanted away from the apex.
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sagittate: shaped like an arrow-head.
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spathulate (= spatulate): spoon-shaped; broad at the tip and narrowed towards the base.
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