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The Seed Herbarium Image Project (SHIP), [1] is an initiative of the Arnold Arboretum of Harvard University to create a web-based repository of high-resolution digital images documenting the morphology of woody plant seeds and selected fruit structures. Headquartered at the Arboretum’s Dana Greenhouse facility and coordinated and photographed ...
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.
empress tree; princess tree; foxglove tree; paulownia Bignoniaceae (trumpet creeper family) 712 Radermachera: radermachera trees ; Radermachera sinica: China doll tree; serpent tree Bignoniaceae (trumpet creeper family) Spathodea: spathodea trees ; Spathodea campanulata: African tulip tree Bignoniaceae (trumpet creeper family) Tabebuia: trumpet ...
The tree produces spiky green fruits about the size of a golf ball, which turn brown and drop off the tree over an extended period beginning in fall and continuing over the winter.
The seeds of both trees have no epigeal dormancy and will germinate immediately. Seed production begins at 11 years of age and large crops are produced most years. Like most maples, silver maple can be variably dioecious (separate male or female trees) or monoecious (male and female flowers on the same tree) but dioecious trees are far more common.
The tree, a member of the horse chestnut family, earned its name for its large, nut-like seed, which is shiny and dark brown with a light-colored spot said to resemble a deer’s eye.
Like most pine tree species, the seeds have a wing attached to them, but in this species it is papery, breaks off easily, and is entirely non-functional, so this tree is entirely reliant upon animals to disperse its seeds. The scrub jay (Aphelocoma californica) is the most important species when it comes to dispersal of the seeds (on the ...
Over 3000 cultivars of the pear are known. [1] The following is a list of the more common and important cultivars, with the year and place of origin (where documented) and an indication of whether the pears are for cooking, eating, canning, drying or making perry.