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Sedge
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' with over 2,000 species. These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands or sedge meadows. Some species superficially resemble the closely related rushes and the more distantly related grasses. Features distinguishing members of the sedge family from grasses or rushes are stems with triangular cross-sections (with occasional exceptions, a notable example being the tule which has a round cross-section) and leaves that are spirally arranged in three ranks. In comparison, g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyperus Polystachyos
''Cyperus polystachyos'', also known as ''Pycreus polystachyos'', and also called manyspike flatsedge in the US, or bunchy sedge, coast flatsedge, many-spiked sedge or Texas sedge in Australia, is a herbaceous species in the family Cyperaceae, widespread in tropical and subtropical areas around the world, sometimes extending its range into temperate regions. Description The rhizomatous, perennial or annual grass-like sedge typically grows to a height of . It blooms between summer and winter and produces green-brown flowers. The stems are rigid with a thickness of . Stems are glabrous with a triangular cross-section. The leaves are very narrow, around with a grass-like appearance and are often tufted at the base of the plant. The seed-head is an irregular cluster formation at the tip of the stem with brown spikes that have three to six green leafy bracts underneath. Distribution It is common in the Neotropics as a weed in grass lawns. In Australia the species is widespread in wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |