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whole leaf: Diamond-shaped rounded: rotundifolius: leaf tip or base: Circular, no distinct point semiterete: 3-D shape: Rounded on one side and flat on the other sagittate: sagittatus: whole leaf: Arrowhead-shaped with the lower lobes folded, or curled downward spatulate: spathulatus: whole leaf: Spoon-shaped; having a broad flat end which ...
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:
Leaves are mostly green in color due to the presence of a compound called chlorophyll which is essential for photosynthesis as it absorbs light energy from the Sun. A leaf with lighter-colored or white patches or edges is called a variegated leaf. Leaves can have many different shapes, sizes, textures and colors.
When structures in different species are believed to exist and develop as a result of common, inherited genetic pathways, those structures are termed homologous. For example, the leaves of pine, oak, and cabbage all look very different, but share certain basic structures and arrangement of parts. The homology of leaves is an easy conclusion to ...
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It has to do with pigments inside of leaves and species of the trees. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach ...
The flowers have seven to nine, often even more, white egg-shaped petals. The sepals are lanceolate. [6] Silene nutans (Nottingham catchfly, Caryophyllaceae) shows ensiform-lanceolate leaves. The slightly rosette-like ground leaves are bigger and of different shape than the sparse, opposite leaves on the stem. [6]
All the "leaves" in this image are bracts. In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis, or cone scale. Bracts are usually different from foliage leaves; they may be of a different size, color, shape, or texture.
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