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In some species, however, the flowers are unisexual with only carpels or stamens. (monoecious = both types of flowers found on the same plant; dioecious = the two types of flower found only on different plants). A flower with only stamens is called androecious. A flower with only carpels is called gynoecious. A pistil consists of one or more ...
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 term pseudanthium was originally applied to flowers with stamens in two whorls with the outer whorl opposite the petals (obdiplostemonate) or polyandric flowers; by the early 1900s the term was repurposed by the advocates of the 'pseudanthium theory' which assumed flower evolution originated from a polyaxial instead of a monoaxial configuration.
Henna flowers have four sepals and a 2 mm (0.079 in) calyx tube, with 3 mm (0.12 in) spread lobes. Its petals are ovate, with white or red stamens found in pairs on the rim of the calyx tube. The ovary is four-celled, 5 mm (0.20 in) long, and erect. Henna fruits are small, brownish capsules, 4–8 mm (0.16–0.31 in) in diameter, with 32–49 ...
Flower of Stylidium turbinatum, showing the column. The column, or technically the gynostemium, is a reproductive structure that can be found in several plant families: Aristolochiaceae, Orchidaceae, and Stylidiaceae. It is derived from the fusion of both male and female parts (stamens and pistil) into a single organ. [1]
The flowers have three stamens and a gynoecium of three united carpels and an inferior ovary, three locules and axile placentation with fruit that is a loculicidal capsule. [ 2 ] Crocus is an acaulescent (lacking a visible lower stem above ground) diminutive seasonal cormous (growing from corms ) herbaceous perennial geophytic genus. [ 3 ]
The spathe is cartilage-waxy, brightly coloured (red, pink) and 8–15 cm long, excluding the inflorescence (the spadix), which is 7–9 cm long, similar to a candle-holder, white or yellow in colour, is erected, and bears many small hermaphroditic flowers. These include a perianth with four segments and stamens with a compressed mesh ...
From centre outwards: Trilocular ovary, 6 stamens, 6 tepals Ornithogalum umbellatum , the garden star-of-Bethlehem , grass lily , nap-at-noon , or eleven-o'clock lady , a species of the genus Ornithogalum , is a perennial bulbous flowering plant in the asparagus family ( Asparagaceae ).