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The dark horizontal lines on silver birch bark are the lenticels. [1]A lenticel is a porous tissue consisting of cells with large intercellular spaces in the periderm of the secondarily thickened organs and the bark of woody stems and roots of gymnosperms and dicotyledonous flowering plants. [2]
Bark is whitish [8] except for irregular copper-colored patches that exfoliate to reveal the greenish, lenticel-dotted inner bark, much like American sycamores. The star-shaped white flowers [7] are about 0.25 in (0.64 cm) in width and have four or five sepals, with an equal number of petals and stamens.
English: The lignotuber and main trunks of a mature specimen of Paeonia ludlowii , showing the various callosities, lenticels and leaf scars of these, clad in grey bark somewhat resembling the warty skin of a toad. Plant growing in a private front garden in the London suburb of Ealing.
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 ...
Lenticel – One of the small, corky pores or narrow lines, on the surface of the stems of woody plants, that allow for the interchange of gases between the interior tissue and the surrounding air. Node – where leaves and buds are attached to the stem. Opposite – buds that are arranged in pairs on opposite sides of the branch
Torminalis glaberrima is a medium-sized deciduous tree growing to 15–25 metres (49–82 feet) tall, with a trunk up to 1.3 m (4 + 1 ⁄ 2 ft) in diameter. The bark is smooth and grayish, but flaky, peeling away in squarish plates to reveal darker brown layers.
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The bark is grayish when young and turns grayish-brown or brown with age. Young lenticels are first greenish, then reddish-brown and thin. The lenticels on the bare and shiny lenticels are small and visible to the naked eye. The lateral buds are arranged in a multi-row spiral on the shoots and are more or less inclined to the lenticel.