| 词条 | Carex flacca |
| 释义 |
| image = Carex flacca.jpeg | genus = Carex | parent = Carex sect. Thuringiaca | display_parents = 3 | species = flacca | authority = Schreb. | synonyms = Carex glauca Scop. | synonyms_ref = }}Carex flacca, with common names blue sedge, gray carex, glaucous sedge, or carnation-grass, (syn. Carex glauca), is a species of sedge native to parts of Europe and North Africa.[1] It is frequent in a range of habitats, including grasslands, moorlands, exposed and disturbed soil, and the upper edges of salt marshes.[1] It has naturalized in eastern North America.[1] DescriptionCarex flacca leaves are blue-green above, glaucous beneath, to {{convert|6|-|12|in|cm}} in height. The arching leaves are about as long as the inflorescence, {{convert|12|-|16|in|cm}}. The plant spreads in expanding clumps by lateral shoots rooting.[1] Most stems have two male spikes, close together and often looking like one at first glance. Fruits are {{convert|2|–|2.5|mm|2}}, roundish, with a very short beak, under {{convert|0.3|mm}}. They are densely packed on the spike, not loose and gappy like Carex panicea. Female spikes are approximately {{convert|2|–|4|cm|1}} long and {{convert|4|–|6|mm}} wide. Female spikes are typically two, and can be short-stalked and upright, or longer-stalked and nodding. CultivationCarex flacca is cultivated by plant nurseries as an ornamental plant, planted for accent or as a groundcover in gardens and public landscapes.[2] It is also used in drought tolerant landscaping and erosion control plantings.[1] It grows in sun to part shade settings. References1. ^1 2 3 4 Bluestem.ca: Carex flacca (Blue Sedge). accessed 11.30.2011 {{Taxonbar|from=Q158524}}2. ^San Marcos Growers 8 : Carex|Flora of Europe|Flora of North Africa|Plants described in 1771|Garden plants of Africa|Garden plants of Europe|Drought-tolerant plants|Groundcovers |
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