familyCyperaceae
genusCarex
sectionCarex sect. Ammoglochin
speciesCarex arenaria

Carex arenaria

Linnaeus

Sp. Pl. 2: 973. 1753.

A. A. Reznicek
IntroducedIllustrated
Treatment appears in FNA Volume 23. Treatment on page 307. Mentioned on page 303, 306.
Please click on the illustration for a higher resolution version.
Illustrator: Susan A. Reznicek

Copyright: Flora of North America Association

Culms trigonous, 15–60 cm, scabrous-angled. Leaves: sheath with apex of inner band yellowish, thickened, concave; ligules 1.5–2.2 mm; blades 1.5–4 mm wide. Inflorescences 2–8 cm; spikes 5–20, ascending, ovate; proximal spikes pistillate, the middle androgynous or staminate; terminal spike usually staminate. Pistillate scales reddish-brown with green center and hyaline margins, ovate, 5–7.8 mm, usually longer than perigynia, apex acute to acuminate. Perigynia prominently thin-winged at apex, lanceolate to broadly ovate, (4–) 4.5–6 × 1.3–3.3 mm; beak poorly defined, 1.2–2.5 mm. 2n = 58, 60–64, 64.


Phenology: Fruiting May–Jul.
Habitat: Maritime sand dunes and sandy, disturbed areas near the coast, 0–30 m

Distribution

V23 536-distribution-map.jpg

Introduced; Del., Md., N.C., Oreg., Va., Eurasia

Discussion

Carex arenaria was first collected in North America in 1870; it remains quite local in distribution.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."thin" is not a number.

... more about "Carex arenaria"
RDF feed
2n chromosome quantity
64 +  and 60 +
Achene shape
biconvex +
Achene size
smaller +
Anther fixation
basifixed +
Apex coloration
yellowish +
Apex condition or size
contracted +
Apex pubescence
glabrous +
Apex shape
acute;acuminate +
Author
A. A. Reznicek +
Authority
Linnaeus +
Band coloration
whitish-hyaline +, hyaline +  and narrow +
Basal sheath texture
fibrous +
Base shape
rounded +
Base texture
not spongy +
Beak prominence
defined +
Beak some measurement
0.12 cm1.2 mm <br />0.0012 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Blade presence
absent +
Blade prominence or shape
flat +
Blade shape
v--shaped +
Blade width
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Bract architecture
glumaceous +  and foliaceous +
Bract architecture or shape
leaflike +
Bract arrangement
2-ranked +  and arranged +
Bract orientation
ascending +  and appressed +
Bract quantity
1;many +
Bract shape
scale-like +  and leaflike +
Branch atypical quantity
3 (4) +
Branch quantity
2;3 +
Bristle atypical quantity
6;30 +
Bristle quantity
3;6 +
Cauline leaf architecture or shape
folded +
Cauline leaf arrangement
parallel +  and divergent +
Cauline leaf arrangement or course or shape
linear +
Cauline leaf orientation
Ascending (?) +
Cauline leaf prominence or shape
flat +
Cauline leaf shape
terete +, rolled +  and plicate +
Center coloration
green +
Cortex architecture or fragility
loose +
Cortex fragility
detatched +
Culm coloration
black +  and brown +
Culm shape
scabrous-angled +  and trigonous +
Culm some measurement
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Distal scale architecture
empty +
Distribution
Del. +, Md. +, N.C. +, Oreg. +, Va. +  and Eurasia +
Embryo position
basal +
Endosperm quantity
abundant +
Flower architecture
open +, pistillate +  and staminate +
Flower position
hypogynous +  and subtending +
Flower quantity
single +
Flower reproduction
unisexual +
Fruits achene shape
biconvex +  and trigonous +
Habitat
Maritime sand dunes and sandy, disturbed areas near the coast, 0–30 m +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Susan A. Reznicek +
Inflorescence arrangement
racemose +
Inflorescence position or structure subtype
terminal +
Inflorescence shape
ovoid +  and cylindric +
Inflorescence some measurement
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Inflorescences panicle architecture
pseudoumbel +
Inflorescences panicle development
modified +
Introduced
true +
Lateral spike architecture
sessile +, staminate +  and pistillate +
Lateral spike reproduction
androgynous +
Leaf arrangement
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
Leaf position
basal +  and cauline +
Ligule presence
absent +
Ligule some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Locule quantity
1 +
Margin architecture or shape
serrulate +  and winglike +
Margin coloration
hyaline +
Margin fusion
fused +
Margin shape
angled +
Middle spike architecture
staminate +
Middle spike reproduction
androgynous +
Midvein fusion
distinct +
Number of lower taxa
0 +
Panicle arrangement
arranged +
Perianth life cycle
falling +
Perianth presence
absent +
Perianth quantity
with (1-)3-6(-30) bristles and/or scales +
Pericarp width
thin +
Perigynium architecture
thin-winged +
Perigynium atypical length
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Perigynium length
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Perigynium orientation
ascending +
Perigynium shape
Lanceolate (Broadly ovate) +
Perigynium width
0.13 cm1.3 mm <br />0.0013 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
Phenology
Fruiting May–Jul. +
Pistil architecture
2-3(-4)-carpellate +
Pistil fusion
fused +
Pistil quantity
1 +
Prophyll architecture
pistillate +
Prophyll atypical quantity
0 (3) +
Prophyll position
subtending +
Prophyll quantity
3 (?) +  and 1 (?) +
Proximal bract architecture
sheathless +
Proximal bract architecture or shape
cuspidate +
Proximal bract shape
scale-like +
Proximal scale architecture
pistillate +
Proximal spike architecture
pistillate +
Publication title
Sp. Pl. +
Publication year
1753 +
Raceme arrangement
arranged +
Reference
None +
Rhizome thickness
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Root derivation
adventitious +
Root texture
fibrous +
Scale architecture
pistillate +
Scale atypical quantity
6 (30) +
Scale coloration
reddish-brown +
Scale duration
persistent +
Scale length or size
usually longer +
Scale position
basal +  and proximal +
Scale quantity
1;0;1 +
Scale reproduction
fertile +
Scale shape
ovate +
Scale some measurement
0.5 cm5 mm <br />0.005 m <br /> (0.78 cm7.8 mm <br />0.0078 m <br />) +
Seed quantity
1 +
Sheath front texture
membranous +
Sheath quantity
1/2 (?) +
Sheath shape
concave +
Sheath size or width
thickened +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23 536.xml +
Special status
Introduced +  and Illustrated +
Spike arrangement
arranged +
Spike orientation
ascending +
Spike quantity
5;20 +
Spike shape
ovate +
Spikelet architecture
1-flowered +
Stamen atypical quantity
1 (3) +
Stamen fusion
distinct +
Stamen quantity
1 +  and 3 +
Stem architecture
septate +, hollow +  and solid +
Stem shape
compressed +, terete +  and trigonous +
Stigma quantity
2 +
Stigma relief
papillate +
Style architecture or shape
undivided +
Style arrangement or course or shape
linear +
Style duration
deciduous +
Style shape
2-3(-4)-fid +
Taxon family
Cyperaceae +
Taxon name
Carex arenaria +
Taxon parent
Carex sect. Ammoglochin +
Taxon rank
species +
Terminal spike architecture
staminate +
Terminal spike reproduction
androgynous +
Testa fusion
free +
Testa width
thin +
Volume
Volume 23 +
Whole organism architecture
long-rhizomatous +
Whole organism duration
perennial +
Whole organism growth form
plant +, colonial +  and not cespitose +
Widest leaf pubescence
glabrous +
X chromosome quantity
10 +