Carex scoparia var. tessellata

Fernald & Wiegand

Rhodora 12: 135. 1910.

Common names: Carex à écailles contrastantes
Treatment appears in FNA Volume 23. Treatment on page 362. Mentioned on page 360.

Inflorescences dense, 1.5–2.5 cm; spikes aggregated. Pistillate scales reddish-brown, chestnut or blackish with pale or greenish midstripe, apex long-acuminate. Perigynia dark tinged at tip, otherwise pale or golden-brown, contrasting with pistillate scales and beaks, elliptic, 4.2–5 × 1.5–2.2 mm, 2–2.6 times as long as wide.


Phenology: Fruiting early–mid summer.
Habitat: Dry to moist meadows, sandy, acidic soils
Elevation: 0–30 m

Discussion

In the field, Carex scoparia var. tessellata might be confused with the Maine endemic C. oronensis. The two taxa have differing perigynia characteristics and habitats (that of C. oronensis often being drier). Also, the distribution of C. scoparia var. tessellata appears to be near the coast, while C. oronensis occurs throughout much of the Penobscot River Valley and into the upper reaches of the Kennebec River Valley.

Selected References

None.

Lower Taxa

None.

"+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property."not undefined" is not a number.

elliptic;ovate +
smaller +
0.3mm +  and 0.4mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Fernald & Wiegand +
shortened +
persistent +
fewer;fewer +
acute +  and short-attenuate +
not enlarged +
ciliate-serrulate +
flattish +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
10 cm100 mm <br />0.1 m <br /> (32 cm320 mm <br />0.32 m <br />) +
3 (?) +  and 5 (?) +
v--shaped +
1.4mm;3mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex à écailles contrastantes +
fertile +  and vegetative +
round +  and trigonous +
20 cm200 mm <br />0.2 m <br /> (100 cm1,000 mm <br />1 m <br />) +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
N.B. +  and Maine. +
0–30 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry to moist meadows, sandy, acidic soils +
brown +, yellow +  and green +
nodding +  and arching +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
hyaline +, golden brown +  and white +
0.2mm +  and 0.6mm +
greenish +  and pale +
with (1-)3-6(-30) bristles and/or scales +
golden-brown +, pale +  and dark tinged +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
spreading +  and ascending +
0.35mm +  and 0.55mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Fruiting early–mid summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
adventitious +
blackish +, chestnut +  and reddish-brown +
basal +  and proximal +
lanceolate +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
shorter and narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
distinct +
0.7 cm7 mm <br />0.007 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
ellipsoid +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
Carex scoparia var. tessellata +
Carex scoparia +
variety +
plant +  and cespitose +