Illinois Natural History Survey - University of Illinois

Carex albicans var. emmonsii
Sharp-scaled oak sedge, Emmons' sedge
Taxonomy

Synonyms: Carex emmonsii, Carex emmonsii var. australis

Subspecific taxa:

Classification:

  • Magnoliophyta
    • Liliopsida
      • Poales

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Images

   
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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 [?]

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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; 3 merous; incomplete, not petals, not sepals; hypogynous ovary position

Fruit: achene

Physiology: autotrophic

Ecology & Natural History

Habitat: Species is often found with Quercus velutina, s. of Warren woods; with: Acer rubrum; Prunus serotina.

ILPIN Notes: Aspect - culms as long as or longer than leaves, culms mostly less than 3 dm tall, densely tufted. Female spikes 5-10 mm l, l less than or equal to 2 (width). Male spike sessile, less than 2 cm long. Leaves - glabrous. Perigynia - beak greater than 0.4 mm l, body ellipsoid, 1 greater than w, noticeably 3-angled, perigynia olive green. Culms weak, loosely spreading; short stout rhizomes, densely cespotose; Plants of dry places. All but lowest spikes aggregated into are ovoid, ellipsoid head 1-2 cm l. Species is found in Union co. (s. tip of state), and NE Ill.

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State: 10
  • Chicago Area: 9

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