Carex hostiana
{{Short description|Species of flowering plant}}
{{Speciesbox
|image=Carex hornschuchiana — Flora Batava — Volume v18.jpg
|image_caption=Botanical illustration
|image2=Carex hostiana inflorescens (1).jpg
|image2_caption=Inflorescence
|genus=Carex
|species=hostiana
|authority=DC.Cat. Pl. Horti Monsp.: 88 (1813)
|synonyms={{Collapsible list|
- Carex armena Boiss.
- Carex fulva Host
- Carex fulvescens Mack.
- Carex greeniana Dewey
- Carex halophila Heuff.
- Carex hornschuchiana Hoppe
- Carex hornschuchiana var. laurentiana Fernald & Wiegand
- Carex hostiana var. laurentiana (Fernald & Wiegand) Fernald & Wiegand
- Carex speirostachya Sw. ex Sm.
- Carex subsalsa Nyman
- Carex trigona All.
- Trasus fulvus Gray
- Trasus hostianus (DC.) Gray
}}}}
Carex hostiana, the tawny sedge, is a species of flowering plant in the genus Carex, native to Europe and northeast Canada, and extinct in Massachusetts.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:300208-1 |title=Carex hostiana DC. |author= |date=2017 |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=8 January 2021 }}{{cite web |title=Carex hostiana tawny sedge |url=https://www.rhs.org.uk/Plants/193954/i-Carex-hostiana-i/Details |publisher=The Royal Horticultural Society |accessdate=8 January 2021 }} It is a member of the Carex flava species complex.{{cite journal |title=Species delimitation and the partitioning of genetic diversity – an example from the Carex flava complex (Cyperaceae) |year=2004 |last1=Hedrén |first1=Mikael |journal=Biodiversity and Conservation |volume=13 |issue=2 |pages=293–316 |doi=10.1023/B:BIOC.0000006499.20169.f9 |bibcode=2004BiCon..13..293H |s2cid=24261932 }}
Description
The rhizomatous perennial sedge has a tufted habit and can be evergreen or deciduous It has straight culms with a triangular cross section that are {{cvt|25|to|60|cm}} in length. The linear shaped leaves sound on the flowering stems have a length up to {{cvt|14|cm}} and are {{cvt|1.5|to|4.5|mm}} wide. The inflorescences are found at the tip of the culm in the form of {{cvt|5|to|70|mm}} long spikes.{{cite web|url=http://www.worldfloraonline.org/taxon/wfo-0000347546|title=Carex hostiana DC.|accessdate=22 August 2022|work=The World Flora Online|publisher=World Flora Online}}
Taxonomy
The species was first formally described by the botanist Augustin Pyramus de Candolle in 1813 as a part of the work Catalogus Plantarum Horti Botanici Monspeliensis. It has three homotypic synonyms; Carex fulva, Trasus fulvus and Trasus hostianus and 13 heterotypic synonyms including; Carex armena, Carex biformis, Carex fulvescens and Carex subsalsa.