Carex platyphylla
{{Short description|Species of flowering plant}}
{{Speciesbox
|image=Carex platyphylla kz1.jpg
|image_caption=Foliage
|image2=Carex platyphylla BB-1913.png
|image2_caption=Botanical illustration
|genus=Carex
|species=platyphylla
|authority=J.CareyAmer. J. Sci. Arts, ser. 2, 4: 23 (1847)
|synonyms=Carex platyphylla var. longipedunculata Kük.
}}
Carex platyphylla, called the broad leaf sedge and silver sedge, is a species of flowering plant in the genus Carex, native to southeast Canada, and the north-central and eastern United States.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:301615-1 |title=Carex platyphylla J.Carey |author= |date=2017 |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=6 January 2021 }}{{cite web |url=https://plants.ces.ncsu.edu/plants/carex-platyphylla |title=Carex platyphylla |author= |date=2021 |website=North Carolina Extension Gardener Plant Toolbox |publisher=N.C. Cooperative Extension |access-date=6 January 2021 }} It is often found in the same forests as Carex plantaginea, also a broad-leaved species, but they do not compete, as C.{{nbsp}}plantaginea prefers wet areas and C.{{nbsp}}platyphylla prefers it dry.{{cite journal |title=The Competitive Relationship of Three Woodland Sedges and its Bearing on the Evolution of Ant-Dispersal of Carex pedunculata |last1=Handel |first1=Steven N. |journal=Evolution |year=1978 |volume=32 |issue=1 |pages=151–163 |doi=10.2307/2407416 |jstor=2407416 |pmid=28564097 }} Silver sedge is considered a useful native ornamental, since it is showy, deer-resistant, and able to tolerate both deep shade and drought once established.