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  2. Vachellia xanthophloea - Wikipedia

    en.wikipedia.org/wiki/Vachellia_xanthophloea

    The trees grow to a height of 15–25 m (49–82 ft). The characteristic bark is smooth, powdery and greenish yellow, although new twigs are purple, flaking later to reveal the characteristic yellow. [4] It is one of the few trees where photosynthesis takes place in the bark. Straight, white spines grow from the branch nodes in pairs. The ...

  3. Betula alleghaniensis - Wikipedia

    en.wikipedia.org/wiki/Betula_alleghaniensis

    The bark on mature trees is a shiny yellow-bronze which flakes and peels in fine horizontal strips. [ 2 ] [ 10 ] The bark often has small black marks and dark horizontal lenticels . [ 7 ] After the tree reaches a diameter greater than 1 ft (0.30 m) the bark typically stops shredding and reveal a platy outer bark although the thinner branches ...

  4. Thorns, spines, and prickles - Wikipedia

    en.wikipedia.org/wiki/Thorns,_spines,_and_prickles

    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.

  5. Why are maple leaves turning yellow and dropping early? A ...

    www.aol.com/news/why-maple-leaves-turning-yellow...

    Columnist Bill Lamont noticed that some of his trees looked like October foliage in August. Why are maple leaves turning yellow and dropping early? A Penn State forester explains

  6. Honey locust - Wikipedia

    en.wikipedia.org/wiki/Honey_locust

    The leaves are pinnately compound on older trees but bipinnately compound on vigorous young trees. [4] The leaflets are 1.4–3.6 cm (1 ⁄ 2 – 1 + 1 ⁄ 2 in) long when compound and very slightly smaller when bipinnate. [7] The leaves are green in summer and turn yellow in autumn in shades ranging from cream and tan to golden yellow. [8]

  7. Manchineel - Wikipedia

    en.wikipedia.org/wiki/Manchineel

    It has reddish-grayish bark, small greenish-yellow flowers, and shiny green leaves. The leaves are simple, alternate, very finely serrated or toothed, and 5–10 centimetres (2–4 inches) long. [7] Spikes of small greenish flowers are followed by fruits, which are similar in appearance to an apple, are green or greenish-yellow when ripe. The ...

  8. Bark (botany) - Wikipedia

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

    The bark of Pinus thunbergii is made up of countless shiny layers. Bark is the outermost layer of stems and roots of woody plants. Plants with bark include trees, woody vines, and shrubs. Bark refers to all the tissues outside the vascular cambium and is a nontechnical term. [1] It overlays the wood and consists of the inner bark and the outer ...

  9. Melaleuca quinquenervia - Wikipedia

    en.wikipedia.org/wiki/Melaleuca_quinquenervia

    Melaleuca quinquenervia, commonly known as the broad-leaved paperbark, paper bark tea tree, punk tree or niaouli, is a small- to medium-sized tree of the myrtle family, Myrtaceae. It grows as a spreading tree up to 20 m (70 ft) tall, with its trunk covered by a white, beige and grey thick papery bark.