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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 ...
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.
The plant grows up to 10 m tall with an upright, sometimes branching trunk that grows to 30–60 cm in diameter. The leaves are dark green and 0.6–1.2 m long. One unique character is that the leaves appear to be truncated near the apex because the middle and distal leaflets have similar lengths.
Duration of leaves: Deciduous – leaves are shed after the growing season. Evergreen – leaves are retained throughout the year, sometimes for several years. Fugacious – lasting for a short time: soon falling away from the parent plant. Marcescent – dead leaves, calyx, or petals are persistent and retained. Persistent – see Marcescence ...
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The small ovate-rounded leaves have barely visible stalks, or are sessile (leaf-base fixed around the stem, without any stalk). This feature helps to distinguish this species from the similar and closely related Crassula spathulata. The leaves have faintly toothed margins. Small, pink-white, star-shaped flowers appear in Autumn or late Summer.
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With developed canopy Leaves and pod Plants. L. coriaria rarely reaches its maximum height of 9 m (30 ft) because its growth is contorted by the trade winds that batter the exposed coastal sites where it often grows. In other environments it grows into a low dome shape with a clear sub canopy space.