Carex chapmanii

Steudel

Syn. Pl. Glumac. 2: 222. 1855.

IllustratedEndemic
Basionym: Carex fusiformis Chapman ex Dewey Amer. J. Sci. Arts, ser. 2, 6: 244. 1848,
Treatment appears in FNA Volume 23. Treatment on page 435. Mentioned on page 433, 434.

Culms loosely tufted or solitary, ascending or lax, 10–32 cm × 0.8–1.6 mm. Leaves: basal sheaths light-brown to brown; sheaths green or yellow-green, 2–26 mm; blades ascending, green or yellow-green, midrib well developed abaxially, 2 lateral-veins well developed adaxially, flat, 18–44 cm × 12–14 mm, blades of owerwintering leaves smooth. Inflorescences: peduncles of proximal spike to 6 cm, longer lateral ones 4.6–14 times as long as spikes they subtend, arising in proximal 1/3 of culm, distal lateral spikes not exserted; peduncle of terminal spike 0–2.8 cm; bracts 8–21 × 1–4 mm, blade of distal lateral spike linear, narrower than spikes, widest bract blade of distalmost lateral spike 0.5–3.4 mm wide. Spikes 3 (–4) per culm; lateral spikes 7–20 × 2.5–4.5 mm; terminal spike 11–35 × 1.8–3 mm. Pistillate scales 2–2.5 × 0.8–1.2 mm, apex acute or mucronate. Staminate scales 3.2–4.2 × 1–1.2 mm, margins hyaline or brown tinged, apex acute. Anthers 3.5–4 mm. Perigynia 6–18 per spike, closely to loosely overlapping, ratio of longer lateral spike length to perigynia number 0.8–2.4, aggregated, spreading, finely, conspicuously (22–) 25–32-veined, narrowly elongate, 3–5.2 × 1.2–1.6 mm; beak excurved, 0.4–1.7 mm. Achenes elongate-obovoid, 2.2–3 × 1.2–1.6 mm.


Phenology: Fruiting spring.
Habitat: Wet, sandy, acidic soils, sometimes over limestone, under deciduous or mixed deciduous-evergreen forests, hammocks
Elevation: 0–50 m

Discussion

Historically, Carex chapmanii was placed in sect. Paniceae. It lacks papillae on the perigynia and abaxial leaf surfaces. Carex chapmanii and C. styloflexa may be conspecific; there is much variability in the rhizome length and density of culm tufts in both taxa. Additional research is needed to resolve the relationship between C. chapmanii and C. styloflexa.

Selected References

None.

Lower Taxa

None.

"-14timesaslongasspikes" is not declared as a valid unit of measurement for this property.

... more about "Carex chapmanii"
0.22 cm2.2 mm <br />0.0022 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
elongate-obovoid +
1.2mm;1.6mm +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Charles T. Bryson +  and Robert F. C. Naczi +
Steudel +
shortened +
light-brown;brown +
tapering +
Carex fusiformis +
excurved +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
yellow-green +  and green +
m--shaped +
narrower +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
ascending +  and appressed +
scale-like +  and leaflike +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
solitary +  and tufted +
purple +  and brown +
10 cm100 mm <br />0.1 m <br /> (32 cm320 mm <br />0.32 m <br />) +
round +  and trigonous +
0.8mm;1.6mm +
Fla. +, Ga. +, N.C. +  and S.C. +
0–50 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet, sandy, acidic soils, sometimes over limestone, under deciduous or mixed deciduous-evergreen forests, hammocks +
18 cm180 mm <br />0.18 m <br /> (44 cm440 mm <br />0.44 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
prophyllate +, pedunculate +  and pistillate +
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
owerwintering +
basal +  and cauline +
brown tinged +  and hyaline +
0 cm0 mm <br />0 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
(22-)25-32-veined +
aggregated +  and overlapping +
not black-mottled +, yellowbrown +  and dark-brown +
0.3 cm3 mm <br />0.003 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Fruiting spring. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
long-sheathing +  and leaflike +
awned +  and acute +
Syn. Pl. Glumac. +
adventitious +
staminate +  and pistillate +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
basal +  and proximal +
2-keeled +
1mm;1.2mm +
cylindric +
0.2 cm2 mm <br />0.002 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex chapmanii +
Carex sect. Laxiflorae +
species +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
plant +  and cespitose +