Carex ozarkana

P. E. Rothrock & Reznicek

Brittonia 48: 104, figs. 1, 2. 1996.

Treatment appears in FNA Volume 23. Treatment on page 368. Mentioned on page 255, 337, 367.

Plants loosely cespitose in small clumps. Culms (35–) 45–95 (–110) cm; vegetative culms inconspicuous. Leaves: sheaths sometimes abaxially green-and-white-mottled near to collar, adaxially green-veined near collar, Y-shaped, white-hyaline area at collar, adaxially firm, summits U-shaped; distal ligules 2–5.5 mm; blades on fertile culms 3–5, 1.5–24 cm × 1.8–4 mm. Inflorescences open or dense, usually nodding or arching, yellowish-brown, 2.3–8.4 cm × 6–17 mm; proximal internode 2.3–16 mm; 2d internode 6–15 mm; proximal bracts bristlelike to 3 cm. Spikes (3–) 5–8 (–9), distant, distinct, conic to globose, 8–19 × 4.2–8.2 mm, base often strongly clavate, apex acute to rounded; staminate portion of well-developed spikes to 11 mm. Pistillate scales yellowish-brown to reddish-brown with green midstripe, lanceolate or narrowly ovate, 3–4 mm, shorter and narrower than perigynia, margins white-hyaline, apex acute to obtuse. Perigynia appressed, pale-yellow or golden brown with green wing and beak, conspicuously 4–6-veined abaxially, conspicuously 4–6 (–7) -veined adaxially, obovate to broadly elliptic, biconvex, 3–4.7 × 1.9–2.8 mm, 0.4–0.5 mm thick, margin flat, including wing 0.5–0.9 mm wide; beak greenish at tip, flat, ciliate-serrulate, abaxial suture with white or reddish brown-hyaline margin, distance from beak tip to achene 1.8–2.7 mm. Achenes elliptic, 1.4–2 × 0.9–1.2 mm, 0.4–0.5 mm thick, 48b apiculum 0.4–0.8 mm; style straight or slightly sinuous. 2n = 62.


Phenology: Fruiting early summer.
Habitat: Seepy stream banks, permanently wet ditches, pond shores, wet depressions in meadows and pastures
Elevation: 100–400 m

Discussion

See note under 146. Carex longii.

Selected References

None.

Lower Taxa

None.

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

... more about "Carex ozarkana"
biconvex +
smaller +
0.4mm +  and 0.5mm +
bidentatate +
papillose +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
white-hyaline +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
P. E. Rothrock & Reznicek +
shortened +
persistent +
clavate +
not enlarged +
ciliate-serrulate +
1.5 cm15 mm <br />0.015 m <br /> (24 cm240 mm <br />0.24 m <br />) +
v--shaped +
1.8mm;4mm +
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 +
45 cm450 mm <br />0.45 m <br /> (95 cm950 mm <br />0.95 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Ark. +, La. +, Okla. +  and Tex. +
100–400 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Seepy stream banks, permanently wet ditches, pond shores, wet depressions in meadows and pastures +
arching +  and nodding +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
reddish brown-hyaline +, white +  and white-hyaline +
0.5mm +  and 0.9mm +
green-and-white-mottled +
with (1-)3-6(-30) bristles and/or scales +
4-6(-7)-veined +  and 4-6-veined +
golden brown +  and pale-yellow +
erect +  and spreading +
0.4mm +  and 0.5mm +
Fruiting early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.23 cm2.3 mm <br />0.0023 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
adventitious +
yellowish-brown +  and reddish-brown +
basal +  and proximal +
ovate;lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
shorter and narrower +
herbaceous +  and membranous +
not differentiated +
y--shaped +
well-developed +
distinct +
0.8 cm8 mm <br />0.008 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
0 cm0 mm <br />0 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
conic;globose +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
sinuous +  and straight +
deciduous +  and persistent +
2-3(-4)-fid +
u--shaped +
Carex ozarkana +
Carex sect. Ovales +
species +
plant +  and cespitose +