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Eriophorum
Sign in to saveEriophorum (cottongrass, cotton-grass or cottonsedge) is a genus of flowering plants in the family Cyperaceae, the sedge family. They are found in the cool temperate, alpine, and Arctic regions of the Northern Hemisphere, primarily in the middle latitudes of North America, Europe, and Asia.
Species
GENUS
- KingdomPlantae
- PhylumTracheophyta
- ClassLiliopsida
- OrderPoales
- FamilyCyperaceae
羊胡子草（学名：Eriophorum）是莎草科下的一属，包含約25個開花植物品種。广泛分布于北半球温带的酸性沼泽地带，特別是北極圈的苔原地帶[2][3]。 为多年生草本植物，高约15-40厘米。其种子成熟后分裂出状如棉絮的白色细丝，可以随风飞散，以利于传播种子[4]。 Cotton Grass 物種 羊鬍子草屬包括以下物種[1]： Eriophorum altaicum Meinsh. (Whitebristle Cottongrass) 东方羊胡子草(Eriophorum angustifolium，Honck.） Eriophorum × beringianum Raymond Eriophorum brachyantherum Trautv. & C.A.Mey. (Northland Cottonsedge) Eriophorum callitrix Cham. ex C.A.Mey. (Arctic Cottongrass) Eriophorum chamissonis C.A.Mey. (Chamisso's Cottongrass) 丛毛羊胡子草(Eriophorum comosum，Wall.） Eriophorum crinigerum (A.Gray) Beetle (Fringed Cottongrass) Eriophorum × fellowsii (Fernald) M.S.Novos. 细秆羊胡子草(Eriophorum gracile，Koch） Eriophorum × gracilifolium M.S.Novos. Eriophorum humile Turcz. 日羊鬍子草 Eriophorum japonicum Maxim. 宽叶羊胡子草(Eriophorum latifolium，Hoppe） Eriophorum × medium Andersson Eriophorum microstachyum Boeck. Eriophorum × polystachiovaginatum Beauverd Eriophorum × pylaieanum Raymond Eriophorum × rousseauianum Raymond 红毛羊胡子草(Eriophorum russeolum，Fr. ex Hartm.） 大型红毛羊胡子草（Eriophorum russeolum var. majus） Eriophorum scabriculme (Beetle) Raymond Eriophorum scheuchzeri Hoppe (White Cottongrass) Eriophorum tenellum Nutt. (Fewnerved Cottongrass) Eriophorum tolmat
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Article
11 sectionsContents
- Description
- Taxonomy
- Species
- Other names
- Subdivision
- Phylogeny
- Distribution and habitat
- Uses
- References
- Bibliography
- External links
Eriophorum (cottongrass, cotton-grass or cottonsedge) is a genus of flowering plants in the family Cyperaceae, the sedge family. They are found in the cool temperate, alpine, and Arctic regions of the Northern Hemisphere, primarily in the middle latitudes of North America, Europe, and Asia.
==Description== Eriophorium species are perennial herbaceous plants that persist by means of underground rhizomes. Stems (called culms) grow singly or in clumps (i.e., cespitose). Both basal leaves and stem leaves are present, although the latter are bladeless in some species. The terminal inflorescence is either a single erect spikelet or multiple spikelets on peduncles of various lengths. In the case of multiple spikelets, the inflorescence is subtended by one or more leaf-like bracts. Individual flowers have 10 or more smooth perianth bristles that greatly elongate and remain attached to the achene during fruiting. The bristles facilitate seed dispersal by wind. In cold Arctic regions, the bristles also serve as insulation by trapping solar radiation and thereby increasing the temperature of the reproductive organs.