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Cycads / ˈ s aɪ k æ d z / are seed plants that typically have a stout and woody trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall.
Like other cycads, Z. pumila is dioecious, having male or female plants. The male cones are cylindrical, growing to 3–15 cm long; they are often clustered. The female cones are elongate-ovoid and grow to 6–15 cm long and 4–6 cm in diameter. Pollination is done by certain insects, namely the cycad weevil Rhopalotria slossoni.
The Natal cycad is dioecious, having male and female cones on separate plants. The male cones are velvety and about 45 by 11 cm (18 by 4 in) in size. Pollen is produced from April to June. The two or three female cones are slightly woolly, yellowish-green and cylindrical, 55 by 25 cm (22 by 10 in) in size, the scales being covered with small knobs.
Like other cycads, Z. integrifolia is dioecious, having male or female plants. The male cones are cylindrical, growing to 5–16 cm long; they are often clustered. The female cones are elongate-ovoid and grow to 5–19 cm long and 4–6 cm in diameter. [8] It produces reddish seed cones with a distinct acuminate tip.
Cones are usually brownish- or blackish-red and single with a dense layer of fine hair. Both male and female cones are produced. The female cone is egg-shaped and up to 40 cm (15.5 in) long and 20 cm (8 in) in diameter while the male cone is largely cylindrical narrowing towards the ends up to 40 cm (16 in) long and 12 cm (4.5 in) in diameter.
The cones are sexually dimorphic: the male cone is a 40 to 50 cm long cylinder that is 7 to 10 cm wide with a peduncle that is up to 2 to 3 cm long; the female cone is 25 to 50 cm long, 20 to 25 cm wide, and sessile. Males can have up to ten cones at one time and females can have up to five cones at one time. [3]
Encephalartos cerinus or Waxen Cycad is a species of cycad in ... with male cones that are spindle-shaped, 55–60 cm long, and 9–10 cm wide. Female cones are ovoid ...
The plant is dioecious, meaning it has separate male and female specimens. Male specimens have 1-3 green ovoid cones that are 18–25 cm long and 6–8 cm in diameter with green to silvery color. [4] Female specimens have 1-2 oval cones of the same color, which are larger at 30–35 cm long and 12 cm in diameter. In Bothalia both male and ...