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A relationship exists between the anatomy of the stem node and the presence or absence of stipules: most plants with trilacunar nodes have stipules; species with unilacunar nodes lack stipules. [3] Stipules are morphologically variable and might appear as glands, scales, hairs, spines, or laminar (leaf-like) structures.
Stipules may be lasting and not be shed (a stipulate leaf, such as in roses and beans), or be shed as the leaf expands, leaving a stipule scar on the twig (an exstipulate leaf). The situation, arrangement, and structure of the stipules is called the "stipulation". Free, lateral As in Hibiscus. Adnate Fused to the petiole base, as in Rosa. Ochreate
Chart illustrating leaf morphology terms. 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]
Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
Leaf shape oblong or linear, often sheathed at base, petiole seldom developed, stipules absent. Major leaf veins usually parallel: Broad, seldom sheathed, petiole common often with stipules. Veins usually reticulate (pinnate or palmate) Roots: Primary root of short duration, replaced by adventitial roots forming fibrous or fleshy root systems
During Tuesday's trial, Whitefeather insisted the shed was a "teenager hangout," per the AP, testifying, “They weren’t locked in … They had a key.
Surface of an organ facing away from the organ's axis, e.g. the lower surface of a lateral organ such as a leaf or petal. [2] Contrast adaxial. abort To abandon development of a structure or organ. [3] abscission Natural shedding of an organ that is mature or aged, as of a ripe fruit or an old leaf. [4] abscission zone
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