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 redbrown apically, ladder-fibrillose, orifice redbrown, 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 redbrown 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 redbrown 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, 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.

"shortened" is not a number."narrower" is not a number.

... more about "Carex flacca"
1.6 cm16 mm <br />0.016 m <br /> (?) +
trigonous +
smaller +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
puberulent-papillose +
with short mucro;obtuse +
Lisa A. Standley +
Schreber +
rounded +
enlarged +
straight +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
35 cm350 mm <br />0.35 m <br /> (?) +
v--shaped +
3 cm30 mm <br />0.03 m <br /> (?) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex glauque +
0 cm0 mm <br />0 m <br /> (35 cm350 mm <br />0.35 m <br />) +
trigonous +
N.S. +, Ont. +, Que. +, Mich. +, N.Y. +, Europe +  and New Zealand +
0–800 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
ladder-fibrillose +
spotted redbrown +
biconvex +  and trigonous +
Abandoned quarries, ditches, marshes, wet forest edges +
0 cm0 mm <br />0 m <br /> (10 cm100 mm <br />0.1 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0 cm0 mm <br />0 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
prolonged +
with (1-)3-6(-30) bristles and/or scales +
spotted redbrown +  and green +
2.2 cm22 mm <br />0.022 m <br /> (?) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fruiting Jul. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Spic. Fl. Lips., +
adventitious +
basal +  and proximal +
obovate +
cylindric +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Introduced +  and Illustrated +
pistillate +  and staminate +
0 cm0 mm <br />0 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0 cm0 mm <br />0 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
4 cm40 mm <br />0.04 m <br /> (?) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex glauca +
Carex flacca +
Carex sect. Thuringiaca +
species +
plant +  and cespitose +