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The woody cone is the female cone, which produces seeds. The male cone, which produces pollen, is usually ephemeral and much less conspicuous even at full maturity. The name "cone" derives from Greek konos (pine cone), which also gave name to the geometric cone. The individual plates of a cone are known as scales.
Female Z. integrifolia with mature seed cone and new cone emerging from base. Zamia species often produce more than one cone close to the tip of the stem or at the terminal of the caudex where it intersects with the cones, also called strobilus, of Z. integrifolia are dioecious. The male strobilus and the female strobilus are found on two ...
Juniper berries are actually modified conifer cones.. A juniper berry is the female seed cone produced by the various species of junipers.It is not a true berry but a cone with unusually fleshy and merged scales called a galbulus, which gives it a berry-like appearance.
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 produce fewer sporophyll and are larger than male cones. Each female cone will have two to eight female reproductive organs known as ovules which if fertilised will develop into seeds. Similarly, as the female cone matures from January to March, it splits apart allowing openings between the cones. [9] Female Macrozamia miquelii ...
The female cones are from 11–17 cm (4.3–6.7 in) long, [4] larger and with thicker scales than those of other douglas-firs, and with exserted tridentine bracts. The seeds are large and heavy, 10 mm long and 8 mm broad, with a short rounded wing 13 mm long; [ 4 ] they may be bird or mammal dispersed as the wing is too small to be effective ...
The megaspore sheath thickened from 3–4.5 microns in the young ovule to 9-10 microns in the mature seed. The number of archegonia varies between one and ten. The nucleus of the egg is unusually large. The largest female cones of the genus D. spinolosum shows up to 80 centimeters in length and a diameter of up to 30 centimeters.
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