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A special term for the Asteraceae fruit is cypsela (plural cypselae or cypselas). For example, the white-gray husks of a sunflower "seed" are the walls of the cypsela fruit. [clarification needed] Many cypselas (e.g. dandelion) have modified calyx tissue called pappi attached that functions in biological dispersal of the seed.
This is often called an achene, but in Asteraceae is more accurately called a cypsela. [7] The primary difference between the two being that a cypsela is a single fruit formed from two ovaries (as in C. saxifraga) while an achene describes a fruit formed from a single ovary. [8] The leaves of C. saxifraga are simple and entire, growing to 3 cm ...
In members of the Asteraceae the fruit is achene-like, and is called a cypsela (plural cypselae). Although there are two fused carpels, there is only one locule, and only one seed per fruit is formed. [17] It may sometimes be winged or spiny because the pappus, which is derived from calyx tissue often remains on the fruit (for example in ...
Peanut seeds are contained in indehiscent legume fruit Acacia senegal fruits, in contrast, are dehiscent legume fruit Some, but not all, indehiscent fruits are included in specialized morphological categories such as achene , berry , caryopsis , cypsela , drupe , hesperidium , loment , pepo , pome , samara , syconium .
Cypsela – an achene-like fruit derived from the individual florets in a capitulum: . Fibrous drupe – (coconut, walnut: botanically, neither is a true nut.). Follicle – follicles are formed from a single carpel, and opens by one suture: ; also commonly seen in aggregate fruits: (magnolia, peony).
The fruit, a cypsela, is roughly 2 or 3 millimeters long. [4] There are several subspecies. At one point there were eight. [8] Five are currently recognized. [1] [4] Helianthus debilis subsp. cucumerifolius - cucumberleaf sunflower. The subspecies with the widest distribution. [5] [9] Helianthus debilis subsp. debilis - beach sunflower. Endemic ...
It has yellow ray florets with 2 to 4 teeth at the tips and tubular yellow disc florets at the center. The fruit is a cypsela with a pappus of scales. [4] This is the plant (Yellow Ox Eye) which was given to medal winners at the European Championships Munich 2022 [5]
The fruit is a hairy cypsela with white to yellow-tinted pappi. [3] Symphyotrichum frondosum. Symphyotrichum frondosum. Symphyotrichum frondosum. Distribution and habitat