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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]
Clitoria ternatea, commonly known as Asian pigeonwings, [1] bluebellvine, blue pea, butterfly pea, cordofan pea, or Darwin pea, [2] is a plant species belonging to the family Fabaceae and native to the Indonesian island of Ternate.
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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.
In Sumatra, Tetrastigma leucostaphylum serves as host for the world's largest flower, the parasitic plant Rafflesia arnoldii. [4] In Rafflesia Forest Reserve in Borneo , Tetrastigma leucostaphylum hosts Rafflesia pricei .
Male flowers have yellow nectaries and five to seven stamens. About 500 greenish-yellow flowers occur in each hermaphroditic panicle. Each flower has six anthers, usually a bilobed stigma, and one ovule in each of its two sections . [5] The flowers are receptive for about one day but may persist if pollinators are excluded. [citation needed]
The flowers are 2-3.5 cm in length and usually have a purple or pale purple color, on rare occasions there are white flowers. The fruits are round, the top and the bottom are flattened out and have grooved portions with a length of 5–7 cm and a width of 7–8 cm. [ 1 ] The stalk of the fruit is 1–4 cm long and is either de-curved or erect.