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- Carex granularis
Carex granularis — limestone-meadow sedge
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Facts
Limestone-meadow sedge is a very variable species, relatively common outside the coastal plain of New England. It is found, as the common name suggests, usually in high-pH soils, in meadows and shorelines. It is listed as endangered in New Hampshire.
Habitat
Anthropogenic (human-disturbed or -maintained habitats), meadows and fields, shores of rivers or lakes, wetland margins (edges of wetlands)
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.
Found this plant? Take a photo and post a sighting.
Characteristics
- Habitat
- 
                                
                                    - terrestrial
- wetlands
 
- New England state
- 
                                
                                    - Connecticut
- Maine
- Massachusetts
- New Hampshire
- Vermont
 
- stem leaf blade width
- 1.2–5.3 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
- 2.2–3.7 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 not divided at the tip into two teeth, or the teeth are very tiny
- 
                        Flowers- Anther length
- 1.6–2.9 mm
 - Bumps on fruit
- there are no papillae on the perigynium surface
 - Length of scale
- 
                                
                                    - the scale is nearly as long as, or longer than, the perigynium
- the scale is shorter than the perigynium
 
 - Lowest spike length
- 6–32 mm
 - Lowest spike width
- 3–6 mm
 - Perigynium beak
- the perigynium has a beak
 - Perigynium beak length
- 0.1–0.3 mm
 - Perigynium beak orientation
- 
                                
                                    - the beak of the perigynium is curved, or angled out from the perigynium
- the beak of the perigynium is straight, and in line with the perigynium
 
 - Perigynium beak serrations
- the perigynium beak has no serrations
 - Perigynium beak teeth
- the perigynium beak is not divided at the tip into two teeth, or the teeth are very tiny
 - Perigynium beak teeth length
- 0 mm
 - Perigynium color
- 
                                
                                    - brown
- yellow
 
 - Perigynium cross-section
- 
                                
                                    - the perigynium is relatively round in cross-section
- the perigynium is trigonous (triangular) in cross-section
 
 - Perigynium hairs
- the perigynium has no hairs
 - Perigynium length
- 2.2–3.7 mm
 - Perigynium nerve texture
- the nerves on the perigynium are raised, even after drying the perigynium
 - Perigynium orientation
- 
                                
                                    - the perigynia are angled outwards
- 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 elliptic (widest near the middle and tapering at both ends)
- the perigynium body is oblong (rectangular but with rounded ends)
- the perigynium body is ovate (egg-shaped)
 
 - Perigynium width
- 1.2–2 mm
 - Perigynium winged
- the perigynium has no wings
 - Pollen- and seed-producing spikes
- some of the spikes produce perigynia
 - Pollen-producing spike length
- 6–43 mm
 - Pollen-producing spike number
- 1
 - Pollen-producing spike peduncle length
- 1–35 mm
 - Scale awn
- The carpellate scale does not have an awn (it may have a short point)
 - Scale awn texture
- NA
 - Scale color
- 
                                
                                    - green
- white or translucent
 
 - Scale length
- 1.4–2.9 mm
 - Scale tip
- the carpellate scale tip is acute (has a sharp point)
 - Spike on stalk
- the lowest spike on the plant has a peduncle
 - Spike orientation
- the spikes are oriented vertically or pressed against the axis
 - Spikes per stem
- 2-15
 - Staminate scale tip
- 
                                
                                    - the staminate scale tip is acuminate (tapered to a narrow point)
- the staminate scale tip is acute (has a sharp 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
- 1.8–2.3 mm
 - Achene width
- 1–1.4 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 flat or M-shaped, with two prominent side-veins
 - Leaf blade length to width ratio
- 17–51
 - Leaf blade texture
- the leaf blade is smooth and hairless, or rough and sandpapery
 - 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
- 1.2–5.3 mm
 - Lowest leaf sheath texture
- the leaf sheath feels smooth (it may have soft hairs)
 - stem leaf blade width
- 1.2–5.3 mm
 
- 
                        Place- Habitat
- 
                                
                                    - terrestrial
- wetlands
 
 - New England state
- 
                                
                                    - Connecticut
- Maine
- Massachusetts
- New Hampshire
- Vermont
 
 - Specific habitat
- 
                                
                                    - edges of wetlands
- human-disturbed or -maintained habitats
- meadows or fields
- shores of rivers or lakes
 
 
- 
                        Stem, shoot, branch- Plant height
- 13–100 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)
In New England
Distribution
- Connecticut
- present
- Maine
- present
- Massachusetts
- present
- 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
- extremely rare (S-rank: S1), threatened (code: T)
- Massachusetts
- fairly widespread (S-rank: S4)
- New Hampshire
- extremely rare (S-rank: S1), endangered (code: E)
From Flora Novae Angliae dichotomous key
76. Carex granularis Muhl. ex Willd. N
limestone-meadow sedge. Carex granularis Muhl. ex Willd. var. haleana (Olney) Porter; C. haleana Olney; C. shriveri Britt. • CT, MA, ME, NH, VT. Shorelines, disturbed soil, meadows, often in high-pH bedrock regions.
Native to North America?
Yes
Sometimes confused with
- Carex crawei:
- staminate spike on a peduncle mostly 9–76 mm long, overtopping the uppermost carpellate spike, and stems produced singly or a few together from elongate rhizomes (vs. C. granularis, with the staminate spike on a peduncle 1–35 mm long, shorter than to barely exceeding the uppermost carpellate spike, and stems cespitose on short, inconspicuous rhizomes).
Synonyms
- Carex granularis Muhl. ex Willd. var. haleana (Olney) Porter
- Carex haleana Olney
- Carex shriveri Britt.
 
                         
                        ![Perigynia: Carex granularis. ~ By Arthur Haines. ~ Copyright © 2025 Arthur Haines. ~ arthur.d.haines[at]gmail.com](https://newfs.s3.amazonaws.com/taxon-images-239x239/Cyperaceae/carex-granularis-pe-ahaines-b.jpg) 
                        ![Plant form: Carex granularis. ~ By Arthur Haines. ~ Copyright © 2025 Arthur Haines. ~ arthur.d.haines[at]gmail.com](https://newfs.s3.amazonaws.com/taxon-images-239x239/Cyperaceae/carex-granularis-ha-ahaines-a.jpg) 
                         
                         
                         
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