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Catkin-bearing plants include many trees or shrubs such as birch, willow, aspen, hickory, sweet chestnut, and sweetfern (Comptonia). [citation needed]In many of these plants, only the male flowers form catkins, and the female flowers are single (hazel, oak), a cone (), or other types ().
The flowers are gray-green catkins, short and spreading when first produced in late summer; the male catkins becoming long (3–20 cm (1–8 in)) and pendulous in late winter when shedding pollen; the female catkins usually a little shorter and less pendulous.
The flowers are catkins, appearing late in spring after the leaves emerge (unlike other alders which flower before leafing out); the male catkins are pendulous, 4–8 cm long, the female catkins 1 cm long and 0.7 cm broad when mature in late autumn, in clusters of 3–10 on a branched stem. [4]
The flowers are catkins produced in early spring at the same time as the new leaves appear. The staminate catkins are 2–5 cm (3 ⁄ 4 –2 in) long, [5] and arranged in groups of 1–4. [7] The pistillate (female) catkins are 8–15 mm (5 ⁄ 16 – 19 ⁄ 32 in) long, containing 10–30 flowers each. [5]
Flower: The flowers are monoecious, meaning that both sexes are found on a single plant. Male (Staminate) catkins are 1.6-2.4 in long; female (Pistillate) catkins are 1/2 in long. Reddish-green flowers open in March to April. Fruit: The ovate, dark brown, cone-like fruit is hard with winged scales. Seeds are produced in small cones and do not ...
The flowers are produced very early in spring, before the leaves, and are monoecious with single-sex wind-pollinated catkins. Male catkins are pale yellow and 5–12 cm long, while female flowers are very small and largely concealed in the buds with only the bright red 1–3 millimetres (1 ⁄ 16 – 1 ⁄ 8 in) long styles visible.
It is a medium-sized, short-lived tree growing to a height of up to 30 metres (98 feet). It has short-stalked rounded leaves and separate male and female flowers in the form of catkins. The small, rounded fruits are cone-like and the seeds are dispersed by wind and water.
The flowers are catkins; the male (pollen) catkins are 2–15 cm long, the female catkins 2.5–5 cm long at maturity, hard and woody, superficially resembling a conifer cone with spirally arranged scales. [1] [2] Galloyl pedunculagin can be found in P. strobilacea. [3]