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- Carex capillaris
Carex capillaris — hair-like sedge
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New England distribution
Adapted from BONAP data
Native: indigenous.
Non-native: introduced (intentionally or unintentionally); has become naturalized.
County documented: documented to exist in the county by evidence (herbarium specimen, photograph). Also covers those considered historical (not seen in 20 years).
State documented: documented to exist in the state, but not documented to a county within the state. Also covers those considered historical (not seen in 20 years).
Note: when native and non-native populations both exist in a county, only native status is shown on the map.
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Facts
Hair-like sedge is divided into two subspecies in New England. One, (Carex capillaris ssp. fuscidula) occurs only in New Hampshire, and is found in alpine habitats; while the other (C. capillaris ssp. capillaris) occurs in Maine and Vermont and is found on wet cliffs and river shore outcrops on calcareous bedrock. Hair-like sedge is listed as threatened in all three states.
Habitat
Alpine or subalpine zones, cliffs, balds, or ledges, shores of rivers or lakes
Characteristics
- Habitat
-
- terrestrial
- wetlands
- New England state
-
- Maine
- New Hampshire
- Vermont
- Leaf blade width
- 1–2.5 mm
- Lowest bract sheath
- the lowest bract has a sheath longer than four millimeters
- Spike on stalk
- the lowest spike on the plant has a peduncle
- Top spike
- the uppermost spike contains only staminate flowers
- Perigynium hairs
- the perigynium has no hairs
- Perigynium length
- 2.3–3.5 mm
- Leaf sheath color
- the leaf sheath has no pink, red or purple tinting
- Leaf blade texture
- the leaf blade is smooth and hairless, or rough and sandpapery
- Perigynium beak teeth
- the perigynium beak is divided at the top into two teeth
-
Flowers
- Bumps on fruit
- there are no papillae on the perigynium surface
- Length of scale
- the scale is shorter than the perigynium
- Lowest spike length
- 5–20 mm
- Lowest spike stalk length
- 3–40 mm
- Lowest spike width
- 3–4 mm
- Perigynium beak
- the perigynium has a beak
- Perigynium beak length
- 0.3–0.6 mm
- Perigynium beak orientation
- the beak of the perigynium is straight, and in line with the perigynium
- Perigynium beak serrations
-
- the perigynium beak has no serrations
- the perigynium beak has tiny serrations along the edges
- Perigynium beak teeth
- the perigynium beak is divided at the top into two teeth
- Perigynium color
-
- brown
- green
- Perigynium cross-section
- the perigynium is trigonous (triangular) in cross-section
- Perigynium hairs
- the perigynium has no hairs
- Perigynium length
- 2.3–3.5 mm
- Perigynium nerve number
- 2
- Perigynium nerve texture
- NA
- Perigynium nerves lower side
- 1
- Perigynium nerves upper side
- 1
- Perigynium orientation
- the perigynia are oriented vertically or pressed against the axis or adjacent perigynia
- Perigynium puffy
- the perigynium is inflated (there is space between the perigynium and the achene)
- Perigynium shape
-
- the perigynium body is oblong (rectangular but with rounded ends)
- the perigynium body is ovate (egg-shaped)
- Perigynium width
- 0.8–1.2 mm
- Perigynium winged
- the perigynium has no wings
- Pollen- and seed-producing spikes
- some of the spikes produce perigynia
- Pollen-producing spike length
- 4–10 mm
- Pollen-producing spike number
- 0–1
- Pollen-producing spike peduncle length
- At least 0 mm
- Pollen-producing spike width
- 0.7–1.4 mm
- Scale awn
- The carpellate scale does not have an awn (it may have a short point)
- Scale awn texture
- NA
- Scale color
-
- brown
- tan
- white or translucent
- Scale length
- 1.8–2.8 mm
- Scale tip
- the carpellate scale tip is obtuse (has a blunt point)
- Spike on stalk
- the lowest spike on the plant has a peduncle
- Spike orientation
-
- the spikes are angled outwards, or arched over
- the spikes are bent downwards or droop downwards
- the spikes are oriented vertically or pressed against the axis
- Spikes per stem
- 2-15
- Staminate scale tip
-
- the staminate scale tip is acute (has a sharp point)
- the staminate scale tip is obtuse (has a blunt point)
- Stigma branching
- the stigmas have three branches
- Top spike
- the uppermost spike contains only staminate flowers
-
Fruits or seeds
- Achene dimples
- the achene has no folds or dimples
- Achene length
- 1.2–1.7 mm
- Achene width
- 0.7–1 mm
- Style persistence
- the style falls off the mature achenes
-
Growth form
- Rhizomes
- there are no rhizomes, or the rhizomes are very short
-
Leaves
- Leaf arrangement
- the leaves are all produced from the base of the plant
- Leaf blade cross-section
-
- The leaf blade is folded lengthwise, with one prominent midvien
- the leaf blade is flat or M-shaped, with two prominent side-veins
- Leaf blade length to width ratio
- 23–27
- Leaf blade texture
- the leaf blade is smooth and hairless, or rough and sandpapery
- Leaf blade width
- 1–2.5 mm
- Leaf bumps
- the upper surface of the leaf blade does not have papillae
- Leaf sheath bumps
- there are no papillae at the top edge of the leaf sheath
- Leaf sheath color
- the leaf sheath has no pink, red or purple tinting
- Leaf sheath dots
- there are no dots on the leaf sheathes
- Leaf sheath folds
- there are no corrugations on the leaf sheath
- Leaf sheath texture
- the leaf sheath feels smooth, and has no hairs
- Lowest bract sheath
- the lowest bract has a sheath longer than four millimeters
- Lowest leaf blade width
- 1–2.5 mm
- Lowest leaf sheath texture
- the leaf sheath feels smooth (it may have soft hairs)
-
Place
- Habitat
-
- terrestrial
- wetlands
- New England state
-
- Maine
- New Hampshire
- Vermont
- Specific habitat
-
- alpine or subalpine zones
- cliffs, balds, or ledges
- shores of rivers or lakes
-
Stem, shoot, branch
- Plant height
- 10–60 cm
- Relative stem height
- the main stem is taller than the leaves
- Stem cross-section
- the main stem is roughly triangular in cross-section
- Stem spacing
- the stems grow close together in compact clusters or tufts
Wetland status
Usually occurs in wetlands, but occasionally in non-wetlands. (Wetland indicator code: FACW)
New England distribution and conservation status
Distribution
- Connecticut
- absent
- Maine
- present
- Massachusetts
- absent
- New Hampshire
- present
- Rhode Island
- absent
- Vermont
- present
Conservation status
Exact status definitions can vary from state to state. For details, please check with your state.
- Maine
- rare (S-rank: S2), special concern (code: SC)
- Vermont
- extremely rare (S-rank: S1), threatened (code: T)
ssp. fuscidula
- New Hampshire
- extremely rare (S-rank: S1), endangered (code: E)
Native to North America?
Yes
Sometimes confused with
Family
Genus
From the dichotomous key of Flora Novae Angliae
30. Carex capillaris L. NC
hair-like sedge. 30a. Carex fuscidula V. Krecz. ex Egorova; 30b. Carex capillaris L. var. elongata Olney ex Fern.; C. capillaris L. ssp. robustior (Drej. ex Lange) Böcher • ME, NH, VT. Wet cliffs, river shore outcrops, seeps, and wet-mesic alpine lawns.
1a. Staminate spike partly enclosed in sheath of lowest bract of inflorescence, situated at or below the level of the uppermost carpellate spike, borne on a smooth peduncle 1.5–7 mm long; carpellate scales red-brown to orange-brown (the margins and sometimes also the midrib pale), usually acute at the apex; beak of perigynium usually smooth, relatively abruptly tapering from the body, 0.6–1.2 mm long; stem leaf blades 0.5–1.4 (–2) mm wide; lowermost bract of inflorescence with a sheath 1.7–7 (–10) mm long … 30a. C. capillaris ssp. fuscidula (V. Krecz. ex Egorova) A. & D. Löve
1b. Staminate spike exserted from sheath of lowest bract of inflorescence, situated at or above the level of the uppermost carpellate spike, borne on a scabrous peduncle (3–) 7–40 mm long; carpellate scales white-brown to pale brown, usually obtuse to nearly truncate at the apex; beak of perigynium scabrous, gradually tapering from the body, 0.3–0.6 mm long; stem leaf blades 1–2.1 (–2.5) mm wide; lowermost bract of inflorescence with a sheath 4–30 mm long … 30b. C. capillaris ssp. capillaris
Subspecies fuscidula is known from NH and occurs in alpine habitats. Subspecies capillaris is known from ME, VT and occurs on high-pH bedrock at lower elevations (e.g., boreal cliffs, river shore outcrops, and seeps). Both subspecies are of regional conservation concern.