Carex subbracteata

Mackenzie

Bull. Torrey Bot. Club 43: 612. 1917.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 347. Mentioned on page 332, 345, 348.

Plants densely cespitose. Culms often lax, supported by other vegetation, 27–105 cm. Leaves: sheaths white-hyaline or green-veined with central white-hyaline strip, summits U-shaped to rounded, sometimes prolonged beyond collar; distal ligules 1.5–5.5 mm; blades 3–6 per fertile culm, 12–65 cm × 1.3–3.7 (–4.6) mm. Inflorescences dense to open, green and brown, gold and brown, or brown, 1.3–3.5 cm × 7–23 mm; proximal internode 2–3 (–4.5) mm; 2d internode 1–3 mm; proximal bracts bristlelike or rarely leaflike, longer than inflorescences. Spikes 4–11, densely aggregated, at least proximal 1–3 distinct, ovoid to broadly ovoid, 6–12.3 × 3.8–9.1 mm; base rounded; apex acute to rounded. Pistillate scales brown, redbrown, or coppery, with whitish, green, or pale-brown midstripe, ovate, (3.2–) 3.5–4.5 mm, shorter, narrower than, or covering perigynia, margin often indistinct, white, 0–0.4 mm wide, apex ± obtuse or rarely short-awned. Perigynia ascending to spreading, straw colored or gold to coppery, conspicuously (0–) 5–9-veined abaxially, conspicuously 0–6-veined adaxially, veins not reaching top of achene, ovate to broadly ovate, planoconvex to biconvex, (2.9–) 3.5–4.7 (–5.7) × 1.2–1.7 (–2.2) mm, 0.5–0.75 mm thick, ± leathery, margin flat, including wing 0.2–0.4 mm wide, ciliate-serrulate at least on distal body, with metallic sheen; beak often brown to dark-brown at tip or white-hyaline, cylindric, unwinged, abaxial suture inconspicuous, distance from beak tip to achene 1.5–2.2 (–2.6) mm, ± entire for (0.3–) 0.4–0.8 mm. Achenes broadly ovate to quadrate, 1.3–2.1 × 1–1.5 (–1.7) mm, 0.5–0.6 mm thick.


Phenology: Fruiting spring–summer.
Habitat: Meadows, swales, moist places, roadsides, along the coast and in Coast Ranges
Elevation: 0–900 m

Discussion

Carex subbracteatais very similar to and perhaps conspecific with C. gracilior (R. Whitkus 1988).

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 subbracteata"
0.22 cm2.2 mm <br />0.0022 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
broadly ovate;quadrate +
smaller +
0.5mm +  and 0.6mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Mackenzie +
shortened +
persistent +
rounded +
not enlarged +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
12 cm120 mm <br />0.12 m <br /> (65 cm650 mm <br />0.65 m <br />) +
3 (?) +  and 6 (?) +
v--shaped +
1.3mm;3.7mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
27 cm270 mm <br />0.27 m <br /> (105 cm1,050 mm <br />1.05 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0–900 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Meadows, swales, moist places, roadsides, along the coast and in Coast Ranges +
brown +, punct +, gold and brown +, green and brown +, list +  and coloration +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.2mm +  and 0.4mm +
pale-brown +, green +  and whitish +
with (1-)3-6(-30) bristles and/or scales +
0-6-veined +  and (0-)5-9-veined +
gold +  and coppery +
ascending +  and spreading +
Fruiting spring–summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
leaflike +  and bristlelike +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Bull. Torrey Bot. Club +
adventitious +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
coppery +, redbrown +  and brown +
basal +  and proximal +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
distinct +
0.6 cm6 mm <br />0.006 m <br /> (1.23 cm12.3 mm <br />0.0123 m <br />) +
ovoid;broadly ovoid +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.91 cm9.1 mm <br />0.0091 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
prolonged +
u-shaped +  and rounded +
Carex subbracteata +
Carex sect. Ovales +
species +
leathery +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.075 cm0.75 mm <br />7.5e-4 m <br />) +
plant +  and cespitose +