| 词条 | Bromus commutatus | |||
| 释义 |
|name = Meadow Brome |image = Panicle of Bromus commutatus.JPG |image_caption = A panicle of Bromus commutatus Schrad. |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Monocots |unranked_ordo = Commelinids |ordo = Poales |familia = Poaceae |genus = Bromus |species = B. commutatus |binomial = Bromus commutatus |binomial_authority = Schrad. |synonyms = Brachypodium commutatum (Schrad.) P. Beauv. Bromus commutatus var. apricorum Simonkai Bromus hordeaceus L. var. commutatus (Schrad.) Fiori Bromus mollis L. var. commutatus (Schrad.) Sanio Bromus mutabilis F. W. Schultz var. commutatus (Schrad.) F. W. Schultz Bromus racemosus L. commutatus (Schrad.) Maire & Weiller Bromus racemosus L. var. commutatus (Schrad.) Coss. & T. Durand Bromus secalinus L. commutatus (Schrad.) Lloret Forasaccus commutatus (Schrad.) Bubani Serrafalcus commutatus (Schrad.) Bab. Serrafalcus racemosus (L.) Parl. Commutatus (Schrad.) Rouy [1] }} Bromus commutatus, known as meadow brome,[2] is an annual or biennial[3] species of plant in the grass family Poaceae. In the United States it is known as hairy chess. CharacteristicsThe height ranges from 40 to {{convert|120|cm|0|abbr=on}}. The panicle is 7–20 cm, usually nodding and often spreading,[3] but erect as first.[4] The leaf-sheaths are hairy, the upper are usually hairless.[4] B. commutatus is stouter than B. racemosus, the smooth brome, with a flower-head not drooping to one side and a broader elongated branched flower head.[5] Meadow Brome structureHabitat and distributionIt is found in meadows, wasteground, road verges, hayfields and rough grassland.[6] Found throughout the United Kingdom, it is common in England on the moist soils of water meadows; it is rare in Scotland, Ireland and Wales.[7] It is found naturally throughout Europe, N. Africa, W. Asia. It has been introduced into North America and in the United States is known as 'Hairy Chess'. The flowering period is from May to July.[7] Crop valueThe species has no fodder value in the United Kingdom and is regarded as a weed. The attractive inflorescences may be used, either fresh or dry, in flower arrangements.[7] VarietiesBromus commutatus var. pubens Wats has spikelets which are not hairless, having soft hairs.[7]ReferencesNotes1. ^synonyms. Accessed : 01-06-10 {{webarchive |url=https://web.archive.org/web/20120814131949/http://zipcodezoo.com/Plants/B/Bromus_commutatus/ |date=August 14, 2012 }} 2. ^{{cite web |title=BSBI List 2007 |publisher=Botanical Society of Britain and Ireland |url=http://www.bsbi.org.uk/BSBIList2007.xls |format=xls |archive-url=https://www.webcitation.org/6VqJ46atN?url=http://www.bsbi.org.uk/BSBIList2007.xls |archive-date=2015-01-25 |accessdate=2014-10-17 |deadurl=yes |df= }} 3. ^Clapham, Page 460 4. ^1 Fitter, Page 74 5. ^McLintock, Page 277 6. ^Philips, Page 72 7. ^1 2 3 4 Hubbard, Page 85 Sources
External links
5 : Bromus|Flora of Europe|Flora of Western Asia|Flora of North Africa|Invasive plant species in the United States |
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