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The acorn is the nut of the oaks and their close relatives (genera Quercus, Notholithocarpus and Lithocarpus, in the family Fagaceae). It usually contains a seedling surrounded by two cotyledons (seedling leaves), enclosed in a tough shell known as the pericarp, and borne in a cup-shaped cupule .
Quercus lyrata has simple leaves that are alternately arranged. [6] On average, the leaves are 15 to 20 cm (6 to 8 in) inches long. They are broad, deeply lobed, and somewhat lyre-shaped (lyrate). Leaves have a leathery feel. They are dark green and shiny on the top while the underside is a paler gray-green with fine hairs.
The inside of the acorn's shell is hairless. Its leaves typically have sharp lobe tips, with bristles at the lobe tip. [29] Sect. Ilex, the Ilex oak and its relatives of Eurasia and northern Africa. Styles are medium-long; acorns mature in 12–24 months, appearing hairy on the inside. The leaves are evergreen, with bristle-like extensions on ...
The margins are usually entire or toothed, and are rounded at the base. The texture of the leaves is leathery and stiff. The veins are parallel, and are sunken on the upperside and raised underneath. Leaves may begin to shed in late winter, or when new leaves emerge in spring. [7] Fruit: oblong acorn that is 1 ⁄ 2 to 1 in long. Acorns have ...
The leaves are deciduous, 2–6 inches (5.1–15 cm) long and 1–3 inches broad, with 3–7 deep lobes on each side, darker green on top and finely haired below. [5] The flowers are catkins, the fruit a small acorn [a] 3⁄4–1 inch (rarely 1 1⁄2 inches) long and 1⁄2–3⁄4 inch broad, with shallow, scaly cups. Its fall color is ...
The fruit is an acorn, maturing about 18 months after pollination, 2–3 cm (3 ⁄ 4 – 1 + 1 ⁄ 4 in) long and 2 cm broad, bi-coloured with an orange basal half grading to a green-brown tip; the acorn cap is 1.5–2 cm (5 ⁄ 8 – 3 ⁄ 4 in) deep, densely covered in soft 4–8 millimetres (3 ⁄ 16 – 5 ⁄ 16 in) long 'mossy' bristles.
Catkins are borne on stalks from leaf axils of the current growth. Flowers appear from February to May, depending on latitude. [3] Acorns: The acorn is about 1.5 cm (1 ⁄ 2 in) long, globular or hemispheric, with up to one-third of its length enclosed in a shallow thin cap. Acorns per pound range from 200 to 750.
The fruit is an acorn, 8–12 millimeters (5 ⁄ 16 – 15 ⁄ 32 in) long, and almost as wide as long, with a shallow cup; it is one of the most prolific producers of acorns. [2] The tree starts acorn production around 15 years of age, earlier than many oak species. [3] Autumn foliage