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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).
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 order Pinales in the division Pinophyta, class Pinopsida, comprises all the extant conifers. The distinguishing characteristic is the reproductive structure known as a cone produced by all Pinales. All of the extant conifers, such as Araucaria, cedar, celery-pine, cypress, fir, juniper, kauri, larch, pine, redwood, spruce, and yew, are ...
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Male cones are 5–10 mm (0.20–0.39 in) long, rectangular shaped, and covered in a yellow pollen. Ovules appear on their own on upturning branchlets. The fruit consists of a 1–2 mm (0.039–0.079 in) long fleshy orange receptacle and a 3–4 mm (0.12–0.16 in) long dark brown rectangular-shaped seed.
Close-up of a Schlumbergera flower, showing part of the gynoecium (specifically the stigma and part of the style) and the stamens that surround it. Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction.