Carex acidicola

Naczi

Novon 12: 510, fig. 1. 2002.

Treatment appears in FNA Volume 23. Treatment on page 456. Mentioned on page 450, 453.

Plants densely cespitose; longer rhizomes internodes 0.2–6 mm, 1.2–2.2 mm thick. Culms purple-red to (3.2–) 4.1–7.4 cm at base, 11–41 cm; vegetative shoots 26–42 cm, 0.72–1.3 as long as culms. Leaves: deep green or proximal ones whitish proximally, widest blades of culms (3.7–) 4.3–5.5 mm wide. Inflorescences: 8.8–36 cm, 0.68–0.95 of culm height; internodes between proximal scales in proximalmost spike 2.4–3 mm; internodes between distal lateral spikes 1.4–13 cm, longest internode (per plant) between distal lateral spikes 3.1–13 cm; peduncle of terminal spike 1.4–9.8 (–14.1) cm, longest peduncle per plant 1.8–9.8 (–14.1) cm; proximal bract sheaths tight, hyaline band of adaxial face with apex truncate, concave, or slightly convex, elongate to 1.3 mm beyond apex; ligules 4–4.9 (–9.6) mm; blades white between veins proximally; bract blade of distalmost lateral spike usually exceeding or occasionally exceeded by terminal spike; longest bract blade of distalmost lateral spike 4.9–12 cm. Spikes 2–5, widely separate or the distalmost 2 overlapping; lateral spikes pistillate, with (2–) 4–7 (–11) perigynia, longest per plant with 5–7 (–11), 6–21 × 3.2–5.7 mm, ratio of longest lateral spike length (in mm) to perigynia number = 2–2.4; terminal spikes 12–49 × (1.3–) 2.1–4 mm, longest per plant (21–) 26–49 mm, usually much exceeding distalmost lateral spike. Pistillate scales 2.8–4.8 × 1.6–2.1 mm, body (2–) 2.3–2.9 mm, midrib prolonged as awn 0.6–2.8 mm. Staminate scales 4.2–6.5 × 1.6–2.4 mm, apex obtuse or acute, awnless. Perigynia distichously imbricate, ascending, prominently 49–64-veined, narrowly obovate or narrowly elliptic, obtusely trigonous in cross-section, (3.7–) 4.2–4.9 × 1.6–1.9, 2.3–2.7 (–2.9) times as long as wide, 1.6–1.8 (–1.9) times as long as achene bodies, base tapered, apex gradually or abruptly tapered; beak absent or straight, 0–0.7 (–0.9) mm, 0–17% of perigynium length. Achenes 3.1–3.3 × 1.5–1.8 mm, tightly enveloped by perigynia, base abruptly contracted, apex abruptly contracted; stipe straight, 0.3–0.6 mm; body 2.4–2.7 mm; beak straight, 0.2–0.3 mm.


Phenology: Fruiting spring.
Habitat: Dry-mesic to mesic deciduous forests, usually in humic, sandy loams
Elevation: 40–300 m

Discussion

Of conservation concern.

Carex acidicola is very rare and local; collections come from only ten populations. It usually occurs in small populations and frequently occurs with C. superata.

Selected References

None.

Lower Taxa

None.

"longest" is not a number."prolonged" is not a number."-1.8(-1.9)timesaslongasachenebodies" is not declared as a valid unit of measurement for this property.

... more about "Carex acidicola"
0.31 cm3.1 mm <br />0.0031 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
trigonous +
smaller +
1.5mm;1.8mm +
Robert F. C. Naczi +  and Charles T. Bryson +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
shortened +
elongate +, convex +  and concave +
tapered +
Griseae +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
straight +
excurved +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (13 cm130 mm <br />0.13 m <br />) +
m--shaped +
0mm;20mm +
0.2 cm2 mm <br />0.002 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
occasionally +  and exceeding +
4.9 cm49 mm <br />0.049 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
purple-red +
round +  and trigonous +
11 cm110 mm <br />0.11 m <br /> (41 cm410 mm <br />0.41 m <br />) +
Ala. +  and Ga. +
40–300 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry-mesic to mesic deciduous forests, usually in humic, sandy loams +
0.68 +  and 0.95 +
8.8 cm88 mm <br />0.088 m <br /> (36 cm360 mm <br />0.36 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.4 cm4 mm <br />0.004 m <br /> (0.49 cm4.9 mm <br />0.0049 m <br />) +
9.8 cm98 mm <br />0.098 m <br /> (14.1 cm141 mm <br />0.141 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (9.8 cm98 mm <br />0.098 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
yellowbrown +  and dark-brown +
2.3-2.7(-2.9) +
Fruiting spring. +
2-3(-4)-carpellate +
2.1 cm21 mm <br />0.021 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
2.6 cm26 mm <br />0.026 m <br /> (4.9 cm49 mm <br />0.049 m <br />) +
3 (?) +  and 1 (?) +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
adventitious +
staminate +  and pistillate +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
basal +  and proximal +
2-keeled +
1.6mm;2.4mm +
hispidulous +
cylindric +
26 cm260 mm <br />0.26 m <br /> (42 cm420 mm <br />0.42 m <br />) +
3.1 cm31 mm <br />0.031 m <br /> (13 cm130 mm <br />0.13 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
straight +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +  and 0.06 cm0.6 mm <br />6.0e-4 m <br /> (?) +
deciduous +
2-3(-4)-fid +
Carex sect. Oligocarpae +
Carex acidicola +
Carex sect. Griseae +
species +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
longest;12mm;49mm +
0.21 cm2.1 mm <br />0.0021 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
plant +  and cespitose +
4.3mm +  and 5.5mm +