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  2. Glossary of leaf morphology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_leaf_morphology

    Leaves of most plants include a flat structure called the blade or lamina supported by a network of veins, a petiole and a leaf base; [1] but not all leaves are flat, some are cylindrical. [ citation needed ] Leaves may be simple, with a single leaf blade, or compound, with several leaflets .

  3. Fleuron (typography) - Wikipedia

    en.wikipedia.org/wiki/Fleuron_(typography)

    Thirty forms of fleuron have code points in Unicode.The Dingbats and Miscellaneous Symbols blocks have three fleurons that the standard calls "floral hearts" (also called "aldus leaf", "ivy leaf", "hedera" and "vine leaf"); [7] twenty-four fleurons (from the pre-Unicode Wingdings and Wingdings 2 fonts) in the Ornamental Dingbats block and three more fleurons used in archaic languages are also ...

  4. Acanthus (ornament) - Wikipedia

    en.wikipedia.org/wiki/Acanthus_(ornament)

    Curling acanthus-type leaves occur frequently in the borders and ornamented initial letters of illuminated manuscripts, and are commonly found in combination with palmettes in woven silk textiles. In the Renaissance classical models were followed closely, and the acanthus becomes recognisable again in large-scale architectural examples. The ...

  5. Phyllotaxis - Wikipedia

    en.wikipedia.org/wiki/Phyllotaxis

    With an opposite leaf arrangement, two leaves arise from the stem at the same level (at the same node), on opposite sides of the stem. An opposite leaf pair can be thought of as a whorl of two leaves. With an alternate (spiral) pattern, each leaf arises at a different point (node) on the stem. Distichous leaf arrangement in Clivia

  6. Stencil - Wikipedia

    en.wikipedia.org/wiki/Stencil

    In practice, the (object) stencil is usually a thin sheet of material, such as paper, plastic, wood or metal, with letters or a design cut from it, used to produce the letters or design on an underlying surface by applying pigment through the cut-out holes in the material.

  7. Rosette (botany) - Wikipedia

    en.wikipedia.org/wiki/Rosette_(botany)

    In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. In flowering plants, rosettes usually sit near the soil. Their structure is an example of a modified stem in which the internode gaps between the leaves do not expand, so that all the leaves remain clustered tightly together and at a similar height.

  8. Petiole (botany) - Wikipedia

    en.wikipedia.org/wiki/Petiole_(botany)

    Leaf of Pyrus calleryana with petiole. In botany, the petiole (/ ˈ p iː t i. oʊ l /) is the stalk that attaches the leaf blade to the stem. [1]: 87 [2]: 171 It is able to twist the leaf to face the sun, producing a characteristic foliage arrangement (spacing of blades), and also optimizing its exposure to sunlight.

  9. Suffix tree - Wikipedia

    en.wikipedia.org/wiki/Suffix_tree

    A suffix tree for a string of length can be built in () time, if the letters come from an alphabet of integers in a polynomial range (in particular, this is true for constant-sized alphabets). [9] For larger alphabets, the running time is dominated by first sorting the letters to bring them into a range of size O ( n ) {\displaystyle O(n)} ; in ...