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A sepal (/ ˈ s ɛ p əl, ˈ s iː p əl /) [1] [2] [3] is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom.
The dorsal sepal is elliptic, inward-sloping, up to 1.5 inches (3.8 cm) long and 0.69 inches (1.8 cm) wide; the lateral sepal is obliquely oblong to elliptic and tapering, channeled along the midvein, up to 1.6 inches (4.1 cm) long and less than 0.75 inches (1.9 cm) wide.
A flower, also known as a bloom or blossom, [1] is the reproductive structure found in flowering plants (plants of the division Angiospermae).Flowers consist of a combination of vegetative organs – sepals that enclose and protect the developing flower.
In a mature flower, the perianth consists of a calyx () and the corolla (petals) it supports.. Petals are modified leaves that surround the reproductive parts of flowers. ...
Acanthaceae (/ æ k æ n ˈ θ eɪ s iː ˌ aɪ,-s i ˌ i /) is a family (the acanthus family) of dicotyledonous flowering plants containing almost 250 genera and about 2500 species. Most are tropical herbs, shrubs, or twining vines; some are epiphytes.
Common characteristics include large flowers with parts arranged in threes: with six colored or patterned petaloid tepals (undifferentiated petals and sepals) arranged in two whorls, six stamens and a superior ovary. The leaves are linear in shape, with their veins usually arranged parallel to the edges, single and arranged alternating on the ...
Asteraceae species are generally easy to distinguish from other plants because of their unique inflorescence and other shared characteristics, such as the joined anthers of the stamens. [7] Nonetheless, determining genera and species of some groups such as Hieracium is notoriously difficult (see " damned yellow composite " for example).
A floral formula is a notation for representing the structure of particular types of flowers.Such notations use numbers, letters and various symbols to convey significant information in a compact form.