Carex molestiformis

Reznicek & P. E. Rothrock

Contr. Univ. Michigan Herb. 21: 300, figs. 1, 2.3. 1997.

Treatment appears in FNA Volume 23. Treatment on page 373. Mentioned on page 340, 370.

Plants cespitose; rhizomes appearing elongate only in old clumps. Culms 25–120 cm; vegetative culms few, inconspicuous, usually fewer than 15 leaves, not strikingly 3-ranked. Leaves: sheaths adaxially white-hyaline, summits U-shaped or truncate and reaching to 1.5 mm beyond collar, smooth; distal ligules 1.5–2.8 mm; blades 3–5 per fertile culm, 9–35 cm × 1.7–3.8 mm. Inflorescences congested or somewhat open, green to brown, 1.4–2.7 (–3.4) cm × 7–16 mm; proximal internode 3–9 mm; 2d internode 3–8 mm; proximal bracts scalelike, bristle tips shorter than inflorescences. Spikes 2–5, distant, distinct, globose to ovoid, 10–35-flowered, 7–12 × 5–10 mm, base rounded or tapered, apex rounded; terminal spike usually lacking conspicuous staminate base. Pistillate scales yellowish-brown, lanceovate, 2.9–4 mm, 0.7–1.7 mm shorter than perigynium or reaching base or sometimes middle of perignyium beak, margins pale, apex acute or obtuse. Perigynia (10–) 15–40 (–45) per spike, ascending, light greenish brown to brown with pale margin, conspicuously 6-veined or more abaxially, 4–6-veined adaxially, broadly ovate to orbiculate, planoconvex, 4–5.4 × 2.4–3.4 mm, 0.5–0.6 mm thick, margin flat, including wing 0.3–0.8 mm wide, smooth; beak pale green or brown at tip, flat, 0.7–1.6 (–1.8) mm, ciliate-serrulate, abaxial suture with white or hyaline golden brown margin, distance from beak tip to achene 1.7–2.6 (–2.9) mm. Achenes broadly ovate to orbiculate, 1.6–2 × 1.4–1.8 mm, 0.5–0.6 mm thick. 2n = 74.


Phenology: Fruiting early summer.
Habitat: Stream flood plains, bottomlands, stream banks, roadsides
Elevation: 100–400 m

Distribution

V23 661-distribution-map.jpg

Ark., Ky., Mo., Okla., Tenn., Va.

Discussion

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.

... more about "Carex molestiformis"
0.26 cm2.6 mm <br />0.0026 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
broadly ovate;orbiculate +
smaller +
0.5mm +  and 0.6mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Reznicek & P. E. Rothrock +
shortened +
persistent +
conspicuous +
tapered +  and rounded +
not enlarged +
ciliate-serrulate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
9 cm90 mm <br />0.09 m <br /> (35 cm350 mm <br />0.35 m <br />) +
3 (?) +  and 5 (?) +
v--shaped +
1.7mm;3.8mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
inconspicuous +
fertile +  and vegetative +
round +  and trigonous +
25 cm250 mm <br />0.25 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
Ark. +, Ky. +, Mo. +, Okla. +, Tenn. +  and Va. +
100–400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Stream flood plains, bottomlands, stream banks, roadsides +
2.7 cm27 mm <br />0.027 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
green +  and brown +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
brown +, hyaline golden +, white +  and pale +
0.3mm +  and 0.8mm +
with (1-)3-6(-30) bristles and/or scales +
4-6-veined +  and 6-veined +
0.5mm +  and 0.6mm +
Fruiting early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Contr. Univ. Michigan Herb. +
adventitious +
yellowish-brown +
basal +  and proximal +
lanceovate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
herbaceous +  and membranous +
not differentiated +
cylindric +
10-35-flowered +
distinct +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
globose;ovoid +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
truncate +  and u--shaped +
Carex molestiformis +
Carex sect. Ovales +
species +
plant +  and cespitose +