Panicum longifolium
Long-leaved panic grass Taxonomy
Synonyms: Panicum rigidulum subsp. pubescens Subspecific taxa: Classification: Other taxonomic & nomenclature sources: USDA Plants;  ITIS;  The Plant List;  IPNI 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: FLNA;  USDA Plants;  BONAP;  BISON
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Species Status
Status/Listing: Extinct Notes:According to Ebinger et al. 2010, "Panicum longifolium (long-leaved panicum) [Panicum rigidulum subsp. pubescens]. A common grass species of open sandy habitats on the Atlantic and Gulf coastal plains of the United States, it has been reported from Monroe County by Mohlenbrock (2001b, 2002a) [rocky ledge ravine limestone cliff, 1962, (SIU)]. This is the only known collection or sighting of this species in Illinois and the long-leaved panicum is considered extirpated from the state (Bowles et al. 1991)." 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: panicle, spike Flowers: perfect; complete, regular; hypogynous ovary position Fruit: grain Physiology: autotrophic; C3 C02 fixation Reproduction: sexual
Ecology & Natural History
Habitat: Limestone ledge in a wooded ravine. ILPIN Notes: Densely tufted; sheaths keeled, pubescent at junction with blade. Northwestern range limit. Functional Relationships:
Human Relationships:
Wildlife and Livestock Information:
Coefficient of Conservatism (C-value) [?] :
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