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In botany, a perigynium (plural: perigynia), also referred to as a utricle, typically refers to a sac that surrounds the achene of plants in the genus Carex . [ 1 ] [ 2 ] The perigynium is a modified prophyll , also known as a glume , which is tissue of leaf origin that encloses the dry, one-seeded achene.
Theophrastoideae is a small subfamily of flowering plants in the family Primulaceae. It was formerly recognized as a separate family Theophrastaceae . As previously circumscribed, the family consisted of eight genera and 95 species of trees or shrubs , native to tropical regions of the Americas .
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.
It is usually found on open hillsides [3] and desert washes and slopes that fall below 5,000 feet (1,500 m). These plants can grow to be up to 2 to 4 feet (60 to 120 cm) wide and 1 to 3 feet tall. During the spring and summer the plant begins to bloom pale to vibrant pink flowers. [6]
A fruit is the mature, ripened ovary of a flower following double fertilization in an angiosperm.Because gymnosperms do not have an ovary but reproduce through fertilization of unprotected ovules, they produce naked seeds that do not have a surrounding fruit, this meaning that juniper and yew "berries" are not fruits, but modified cones.
A mature flower. In this example, the perianth is separated into a calyx (sepals) and corolla (petals) The perianth (perigonium, perigon or perigone in monocots) is the non-reproductive part of the flower, and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals) or tepals when called a perigone.
Buttercups usually flower in the spring, but flowers may be found throughout the summer, especially where the plants are growing as opportunistic colonizers, as in the case of garden weeds. The water crowfoots ( Ranunculus subgenus Batrachium ), which grow in still or running water, are sometimes treated in a separate genus Batrachium (from ...
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.