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The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of stigmatic papillae , the cells of which are receptive to pollen.
Tetrastigma is a genus of plants in the grape family, Vitaceae.The plants are lianas that climb with tendrils and have palmately compound leaves. Plants are dioecious, with separate male and female plants; female flowers are characterized by their four-lobed stigmas. [2]
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Flower is from the Middle English flour, which referred to both the ground grain and the reproductive structure in plants, before splitting off in the 17th century. It comes originally from the Latin name of the Italian goddess of flowers, Flora. The early word for flower in English was blossom, [8] though it now refers to flowers only of fruit ...
The genus name Hoplestigma is derived from the Greek hople, "a hoof or a cloven hoof" and stigma, "a flower stigma". The botanical name is a reference to the deeply bifid style. [2] The family placement of the genus has varied.
In an epigynous flower, the stamens, petals, and sepals are attached to the hypanthium at the top of the ovary or, occasionally, the hypanthium may extend beyond the top of the ovary. Epigynous flowers are often referred to as having an inferior ovary. Plant families with epigynous flowers include orchids, asters, and evening primroses.
The main pollinators of the flowers are bees, hummingbirds, sunbirds, and bats. The pollination mechanism is conspicuously specialized. Pollen is shed on the style while still in the bud, and in the species and early hybrids, some is also found on the stigma because of the high position of the anther, which means that they are self-pollinating ...
Lilium longiflorum flower – 1. stigma, 2. style, 3. anthers, 4. filament, 5. tepal. Lilies are tall perennials ranging in height from 1–6 ft (30–180 cm). They form naked or tunicless scaly underground bulbs which are their organs of perennation.