Carex flacca

Schreber

Spic. Fl. Lips., 178. 1771.

Common names: Carex glauque
IntroducedIllustrated
Synonyms: Carex glauca Scopoli
Treatment appears in FNA Volume 23. Treatment on page 420.

Culms obtusely trigonous, to 35 cm × 1.5 mm, scabrous distally. Leaves: sheaths with blades, to 2 cm, rough, fronts spotted red-brown apically, ladder-fibrillose, orifice red-brown, slightly prolonged beyond blade and sheath, leathery; blades 35 cm × 3 mm, margins rough; proximal blades blue-green, densely papillose. Inflorescences to 10 cm; peduncle of staminate spike to 2.5 cm; proximal bracts about equaling inflorescences; staminate spikes 1–3; pistillate spikes 2–3, to 4 cm × 4 mm. Scales red-brown with green midrib and hyaline margins, obovate, apex obtuse or with short mucro to 0.3 mm, equaling perigynia and narrower. Anthers to 2.5 mm. Perigynia ascending, green, spotted red-brown on distal 1/2, sessile, 2.2 × 1.4 mm; beak orifice purple-brown, glabrous. Achenes brown, 1.6 × 1.1 mm.


Phenology: Fruiting Jul.
Habitat: Abandoned quarries, ditches, marshes, wet forest edges
Elevation: 0–800 m

Distribution

V23 767-distribution-map.jpg

Introduced; N.S., Ont., Que., Mich., N.Y., Europe, introduced New Zealand.

Discussion

Carex flacca occurs throughout Europe, especially on calcium-rich soils. It is sparsely introduced in North America, but appears to be increasing. The species is superficially similar to and may be mistaken in the field for one of the smaller species of sect. Phacocystis.

Selected References

None.

Lower Taxa

None.
... more about "Carex flacca"
Lisa A. Standley +
Schreber +
Carex glauque +
N.S. +, Ont. +, Que. +, Mich. +, N.Y. +, Europe +  and introduced New Zealand. +
0–800 m +
Abandoned quarries, ditches, marshes, wet forest edges +
Fruiting Jul. +
Spic. Fl. Lips., +
Introduced +  and Illustrated +
Carex glauca +
Carex flacca +
Carex sect. Thuringiaca +
species +