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The leaf is an integral part of the stem system, and most leaves are flattened and have distinct upper ... Medium-scale diagram of leaf internal anatomy.
whole leaf: Cleft into many parts or lobes obcordate: obcordatus: whole leaf: Heart-shaped, stem attaches at the tapering end oblanceolate: oblanceolatus: whole leaf: Much longer than wide and with the widest portion near the tip; reversed lanceolate oblique: leaf base: Asymmetrical leaf base, with one side lower than the other oblong: oblongus ...
English: This diagram show a specific parts of a leaf that is on a stem. The parts included are: 1. Apex 2. Midvein (Primary vein) 3. Secondary vein. 4. Lamina. 5. Leaf margin 6. Petiole 7. Bud 8. Stem
Plant anatomy or phytotomy is the general term for the study of the internal structure of plants.Originally, it included plant morphology, the description of the physical form and external structure of plants, but since the mid-20th century, plant anatomy has been considered a separate field referring only to internal plant structure.
Leaf Parts: – A complete leaf is composed of a blade, petiole, and stipules, but in many plants one or more might be lacking or highly modified. Blade – see lamina. Lamina – the flat and laterally-expanded portion of a leaf blade. Leaflet – a separate blade, among others, of a compound leaf
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 make. 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 ...
A straight, stiff hair (smooth or with minute teeth); the upper part of an awn (when the latter is bent and has a lower, stouter, and usually twisted part, called the column). brochidodromous Pinnate leaf venation in which the secondary vein s do not terminate at the leaf margin, but are joined in a succession of prominent arcs. brochus. pl. brochi
A primordium, the nascent leaf, forms at the least crowded part of the shoot meristem. The golden angle between successive leaves is the blind result of this jostling. Since three golden arcs add up to slightly more than enough to wrap a circle, this guarantees that no two leaves ever follow the same radial line from center to edge.