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The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1] The edge of the leaf may be regular or irregular, and may be smooth or have hair, bristles, or ...
L. divergens receives its name from its relatively unusual leaf growth. The plant's leaves grow in pairs sometimes clumped together, however the leaves separate in the center and are widely divergent from one another, forming a large fissure between the leaves. [3]
One unusual leaf form, Eoginkgoites, even approaches a palmate appearance similar to early species of Ginkgo. [ 4 ] The foliage of bennettitaleans resembles that of cycads to such an extent that the foliage of the two groups cannot be reliably distinguished based on gross morphology alone.
The plant morphologist goes further, and discovers that the spines of cactus also share the same basic structure and development as leaves in other plants, and therefore cactus spines are homologous to leaves as well. This aspect of plant morphology overlaps with the study of plant evolution and paleobotany.
Leaf Base Shape: Semiamplexicaul – the leaf base wraps around the stem, but not completely. Leaf Blade Apex: Acuminate – narrowing to a point (a term used for other structures, too). Acute – with a sharp, rather abrupt ending-point. Acutifolius – with acute leaves. Attenuate – tapering gradually to a narrow end. Leaf Blade Margins:
Brachychiton rupestris has been recorded as a host plant for the mistletoe species Dendrophthoe glabrescens. [30] Insects hosted by the species include the pale cotton stainer bug, a pest of cotton crops, and the kurrajong leaf roller caterpillar that chews on the foliage and rolls individual leaves, within which it then pupates.
The plant produces rosettes of leaves and an inflorescence on a long rigid scape. The leaves are extremely variable, from 10–50 cm (4– 19 + 1 ⁄ 2 in) in length [10] and 1 to 2 cm (1 ⁄ 2 to 3 ⁄ 4 in) thin to wedge-shaped like those of S. cuneata. Spongy and solid, the leaves have parallel venation meeting in the
Coccoloba gigantifolia is a tree which grows to about 49 feet (15 meters) in height and has leaves that can reach 8 feet (2.4 meters) in length, and 4 ft 7 in (1.40 meters) in width, the third [citation needed] largest known leaf among dicotyledonous plants after Gunnera manicata and Victoria boliviana. [3]