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A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male 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.
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 5–8 mm long, grouped in lines along the underside of a shoot. The female ( seed ) cones are single or grouped two to eight together on a short stem; minute at first, they mature in about 18 months to a drupe -like structure with the single large nut -like seed 2–4 cm long surrounded by a fleshy covering, green to purple ...
The female cones are large and usually woody, 2–60 centimetres (1–24 inches) long, with numerous spirally arranged scales, and two winged seeds on each scale. The male cones are small, 0.5–6 cm (1 ⁄ 4 – 2 + 1 ⁄ 4 in) long, and fall soon after pollination; pollen dispersal is by wind. Seed dispersal is mostly by wind, but some ...
Podocarpus spp. are generally dioecious, with the male pollen cones and female seed cones borne on separate individual plants, but some species may be monoecious. The cones develop from axillary buds, and may be solitary or form clusters. [1] The pollen cones are long and catkin-like in shape. They may be sessile or short pedunculate.
Like other conifers, they produce cones. Each tree can have both male and female cones or they can have only male or female cones . [8] Male cones are among the largest among all conifer cones, on average. They are cylindrical and drooping, somewhat resembling catkins.
The only natural prostrate conifer: Pherosphaera hookeriana: Drooping pine: Small to medium, dense conifer shrub, 1.5–3 m (4 ft 11 in – 9 ft 10 in) in height, 1–4 m (3 ft 3 in – 13 ft 1 in) in width: Small to 2 mm (0.079 in), dense and appressed, spiralling, dark green to olive: Male and female cones on separate plants. Male cones ...
The male cones are cylindrical, 3–5 mm long, with 2-3 together at the end of side branches. Female cones occur in groups of 3–4 in short, stalked clusters at the axils or margins of the cladodes. Mature cones are a distinct fleshy pink to red, with a white aril holding a hard, black, exposed seed. [2]