Carex flava

Carex flava, called hedgehog grass or large yellow sedge, is a widespread species of sedge (genus Carex, family Cyperaceae), native to the northern United States, Canada, Iceland, Europe, the Atlas Mountains in Africa, the Transcaucasus area, and parts of Siberia.^[2][3] It gives its name to the Carex flava species complex.^[4]

Carex flava
Seedhead
Botanical illustration
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Cyperaceae
Genus:	Carex
Species:	C. flava
Binomial name
Carex flava L.[1]
Synonyms[2]
List Anithista flava (L.) Raf. Carex echinata Lam. Carex flava subsp. alpina (Kneuck.) O.Bolòs, Masalles & Vigo Carex flava var. barrerae O.Bolòs, Masalles & Vigo Carex flava var. fertilis Peck Carex flava var. gaspensis Fernald Carex flava var. graminis L.H.Bailey Carex flava f. graminis (L.H.Bailey) Scoggan Carex flava var. laxior (Kük.) Gleason Carex flavella V.I.Krecz. Carex flavofulva Beurl. Carex foliosa All. Carex laxior (Kük.) Mack. Carex lepidocarpa var. laxior Kük. Carex nevadensis subsp. alpina (Kneuck.) Podlech Carex patula Host Carex uetliaca Suter Carex viridis Honck. Proteocarpus flavus (L.) Fedde & J.Schust. Trasus flavus (L.) Gray

Distribution and habitat

Carex flava favours calcareous mires and damp woodland conditions. It thrives on peaty soil flushed by calcareous water from adjacent limestone outcrops.^[5]