Illinois Natural History Survey - University of Illinois

Panicum capillare var. occidentale
Witch grass
Taxonomy

Synonyms: Panicum capillare occidentale

Subspecific taxa:

Classification:

  • Magnoliophyta
    • Liliopsida

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
0
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:not accepted by IT IS, but used by other sources

Origin: Native

Species Description

General: Monocot, annual

Roots: adventitious, fibrous

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

Inflorescence: panicle

Flowers: perfect; 3 merous; complete; hypogynous ovary position

Fruit: grain

Physiology: autotrophic; C4 C02 fixation

Ecology & Natural History

Habitat: Species is distributed on sunny ground, waste and alluvial soils, gravel bars, chert and granite glades, and along railroad tracks.

ILPIN Notes: Species is less common than var. capillare. Versus variety capillare, this variety has long-exerted panicles and slightly larger spikelets and grains. It is a member of Sect. Capillaria. Stephens, H.A. 1980. Poisonous Plants of the Central United States. Regent Press of Kansas. (Lawrence co. 165 pp.)

Functional Relationships:

Human Relationships:

  • Edibility [?] :
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value:

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

  • Entire State:
  • Chicago Area:

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