Carex lutea

LeBlond

Sida 16: 155, fig. 1. 1994.

Treatment appears in FNA Volume 23. Treatment on page 525. Mentioned on page 521, 524.

Plants cespitose. Culms straight, (40–) 65–110 (–125) cm, tallest culms 65–125 cm. Leaves of flowering-stems shorter than culms, to 28 cm × 1.8–3.8 mm; ligules on distal cauline leaves truncate or rounded. Inflorescences: peduncles of terminal staminate spikes (3–) 10–60 (–102) mm, 0.7–2.5 length of staminate spikes; bracts 5–25 cm × 1.2–2.5 mm, 0.5–1.3 (–1.9) times as long as inflorescences; inner band of sheaths usually concave or truncate (occasionally convex). Spikes: proximal pistillate spikes 1–2 (–3), distant, sessile or short-pedunculate, globose to ellipsoid or short-cylindric, 7–27 × 8–11 mm; terminal staminate spikes pedunculate, (9–) 17–39 × 1.4–2.5 mm. Scales: pistillate scales pale yellowish green, inconspicuous among perigynia, 2.1–3.3 × 0.9–1.3 mm; staminate scales reddish-brown to pale-brown, narrowly obovate to narrowly oblong, 2.9–5.6 × 1.2–1.9 mm, margins wide, pale hyaline, apex obtuse to acute. Anthers 2.1–3.6 mm. Perigynia reflexed, yellow to yellowish green, (3.5–) 3.9–5.2 (–5.8) × 1.4–2.2 mm, apex abruptly narrowed; beak forming angle greater than 20° with body, 1.4–2.2 mm, sparsely scabrous or, occasionally, smooth. Achenes 1.4–1.9 × 1.2–1.5 mm.


Phenology: Fruiting May–Jun.
Habitat: Sandy soils over limestone, in the ecotone between longleaf pine savannas and non-riverine swamp forests, where fire has suppressed shrub dominance, on lime-rich soils

Discussion

Of conservation concern.

Carex lutea, a recently discovered species of the Atlantic Coastal Plain, is widely disjunct from other species of the section. The nearest known population of another member of the section (C. viridula var. viridula) is about 750 km to the north in New Jersey.

Selected References

None.

Lower Taxa

None.

No values specified."/10" is not declared as a valid unit of measurement for this property."lengthofstaminatespikes" is not declared as a valid unit of measurement for this property. "lengthofstaminatespikes" is not declared as a valid unit of measurement for this property.

... more about "Carex lutea"
0.14 cm1.4 mm <br />0.0014 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
trigonous +
smaller +
1.2mm;1.5mm +
0.21 cm2.1 mm <br />0.0021 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
, +  and contracted +
William J. Crins +
LeBlond +
shortened +
tapering +  and rounded +
, +  and scabrous +
bidentate +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
v--shaped +  and septate-nodulose +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
straight +
round +  and trigonous +
65 cm650 mm <br />0.65 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
rounded +  and truncate +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Sandy soils over limestone, in the ecotone between longleaf pine savannas and non-riverine swamp forests, where fire has suppressed shrub dominance, on lime-rich soils +
truncate +  and concave +
prophyllate +  and pedunculate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
0cm +  and 28cm +
basal +  and cauline +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
pale hyaline +
6 cm60 mm <br />0.06 m <br /> (10.2 cm102 mm <br />0.102 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.58 cm5.8 mm <br />0.0058 m <br />) +
yellow +  and yellowish green +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Fruiting May–Jun. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
rounded-trigonous +, ovoid +, , +  and obovoid +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
long-sheathing +  and leaflike +
cuspidate +  and acute +
adventitious +
staminate +  and pistillate +
reddish-brown +  and pale-brown +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
basal +  and proximal +
inconspicuous +
narrowly obovate;narrowly oblong +
1.2mm;1.9mm +
cylindric +
short-pedunculate +, sessile +  and pistillate +
0.7 cm7 mm <br />0.007 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
globose;ellipsoid or short-cylindric +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
65 cm650 mm <br />0.65 m <br /> (125 cm1,250 mm <br />1.25 m <br />) +
Carex lutea +
Carex sect. Ceratocystis +
species +
pedunculate +  and staminate +
0.9 cm9 mm <br />0.009 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
plant +  and cespitose +