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A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female or seed cone on a Norway spruce (Picea abies) Immature male or pollen cones of Swiss pine (Pinus cembra) A conifer cone or, in formal botanical usage, a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.
They contain 80–200 large edible seeds, similar to pine nuts, though larger. The male cones are smaller, 4–10 cm (1 + 1 ⁄ 2 –4 in) long, narrow to broad cylindrical, and 1.5–5 cm (1 ⁄ 2 –2 in) broad. The genus is familiar to many people as the genus of the distinctive Chilean pine or monkey-puzzle tree (Araucaria araucana).
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The female cone then opens, releasing the seeds which grow to a young seedling. To fertilize the ovum, the male cone releases pollen that is carried in the wind to the female cone. This is pollination. (Male and female cones usually occur on the same plant.) The pollen fertilizes the female gamete (located in the female cone).
The male cones are slender conic, 5–11 cm (2.0–4.3 in) long and 1–2 cm (0.39–0.79 in) broad and reddish-brown in colour and are lower on the tree than the seed cones. [3] Seedlings appear to be slow-growing [ 3 ] and mature trees are extremely long-lived; some of the older individuals today are estimated to be between 500 and 1,000 ...
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Araucaria heterophylla (synonym A. excelsa) is a species of conifer.As its vernacular name Norfolk Island pine (or Norfolk pine) implies, the tree is endemic to Norfolk Island, an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia.
Like all conifers, the mountain pine life cycle is dependent on cones. Male and female flowers are found on separate trees [4] – male cones 3-5mm long are at the tips of branches [18] and female flowers grow solo or in pairs and form just below the tips of the branches. [4]