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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 ().
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. They are usually woody and variously conic, cylindrical, ovoid, to globular, and have scales and bracts arranged around a central axis, but can be fleshy and berry -like.
Catkins of the hazel (Corylus avellana)Betulaceae, the birch family, includes six genera of deciduous nut-bearing trees and shrubs, including the birches, alders, hazels, hornbeams, hazel-hornbeam, and hop-hornbeams, numbering a total of 167 species. [2]
Amentotaxus argotaenia, the catkin yew, is a species of conifer in the family Taxaceae. It is a shrub or a small tree up to 7 metres (23 ft) tall. [2] Amentotaxus argotaenia var. brevifolia has been described from southern Guizhou and listed separately by IUCN. [3] Amentotaxus formosana was previously recognised as a variant of A. argotaenia. [4]
Amentotaxus is a genus of conifers (catkin-yews) comprising five species, treated in either the Cephalotaxaceae, or in the Taxaceae when that family is considered in a broad sense. The genus is endemic to subtropical Southeast Asia, from Taiwan west across southern China to Assam in the eastern Himalaya , and south to Vietnam .
catkin A spike, usually pendulous, in which the mostly small flower s are unisexual and without a conspicuous perianth, e.g. in willows, poplars, oaks, and casuarinas. The individual flowers often have scaly bract s and are generally wind-pollinated. Catkins are usually shed as a unit. caudate Having a narrow, tail-like appendage or tip, e.g. a ...
The staminate catkins of pignut hickory are 8 to 18 cm (3.1 to 7.1 in) ... Initial root habits in American trees and its bearing on regeneration. In Proceedings ...
Bigtooth aspens produce seeds from wind-pollinated flower clusters, known as catkins. The tree is dioecious, meaning that male and female flowers are on separate trees, which flower from mid-April to mid-May depending on the climate zone. The seed, a two-valved capsule, is distributed widely by the wind. Seed production begins around 10 years old.