Illinois Natural History Survey - University of Illinois

Carex digitalis
Sedge, Narrow-leaved wood sedge
Taxonomy

Synonyms: Carex digitalis var. digitalis, Carex digitalis var. macropoda

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

J
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F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Monocot, perennial

Roots: adventitious, fibrous

Shoots: alternate leaf arrangment; simple leaf type; entire leaf margin; Parallel leaf venation; awl-shaped leaf shape

Inflorescence: spike

Flowers: unisexual, monoecious; 3 merous; incomplete, not petals, not sepals; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Species is often distributed in chert, sand, or sandstone; also in ravines or at the base of slopes in limestone areas.

ILPIN Notes: Terminal spike is usually all staminate, may have a few perigynia. Lateral spikes 2-5, pistillate or androgynous. Staminate spikes conspicuous, mostly long-pedunculate, overtopping pistillate spikes. Pistillate spikes mostly erect ascending, loosely flowered, perigynia in 2-3 rows; Leaves glabrous. Pistillate scales acute-acuminate, shorter than perigynia. Perigynia ellipsoid, short-stipitate, pale to dark green or glaucous, with elevated nerves, readily visible on spike, triangular in x-section, closely enveloping the achene. Achene triangular-ellipsoid, not stipitate (ref. 2). Ref. 4 has 2 varieties, digitalis and macropoda Fern. These differ on: 1) sessile or peduncled nature of fertile spikes; 2) spike length rel. to fertile bract length; 3) culm height.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

Coefficient of Conservatism (C-value) [?] :

  • Entire State: 8
  • Chicago Area: 10

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