Synonym(s): Chasmanthium laxum ssp. sessiliflorum, Chasmanthium laxum var. sessiliflorum
Image ID: 13586
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library
PLANT INDEX
ID_PLANT: CHSE2
SCIENTIFIC NAME: Chasmanthium sessiliflorum
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2019-05-10
GENUS INDEX
GENUS CODE: CHASM GENUS SCIENTIFIC:Chasmanthium GENUS AUTHORITY: Link GENUS COMMON: Woodoats GENUS SUMMARY: A genus of 5 species, perennials, endemic to se. North America. GENUS IDENTIFICATION: GENUS REFERENCES: Sánchez-Ken & Clark in FNA (2003a); Yates (1966a, 1966c)=Z.
FAMILY INDEX
FAMILY CODE: POACEA FAMILY SCIENTIFIC:Poaceae FAMILY AUTHORITY: (R. Brown) Barnhart 1895 or GRAMINEAE A.L. de Jussieu 1789 FAMILY COMMON: Grass Family FAMILY SUMMARY: A family of about 771 genera and 12,074 species, herbs (and some shrubs and trees), cosmopolitan. Tribal classification largely follows FNA (2003a, 2007a), with some changes based on subsequent research, as for instance in the Chloridoideae (Peterson, Romaschenko, & Johnson 2010a). FAMILY REFERENCE: Flora of North America Editorial Committee (2003a, 2007a)=FNA; Hitchcock and Chase (1950)=HC; Blomquist (1948); Peterson, Romaschenko, & Johnson (2010a, 2010b). Key to genera adapted in large part from FNA.
FRUITING PERIOD: DISTRIBUTION
HABITAT TYPE:
NATIVE RANGE: southeastern United States HORTICULTURAL
Plant Sale Text: This perennial grass is found in upland woods and prefers part-shade to shade. It produces delicate inflorescences in the summer on stalks that rise 2 to 3 ft above the grass clump. The spikelet seedheads remain through fall into winter. It spreads by seed and rhizome, and in a naturalized setting will form scattered patches of the grass in the understory. It provides food and habitat for birds and small mammals.
Bloom Table Text:
NCBG Location:
Cultural Notes:
SOIL MOISTURE:
Dry, Average
LIGHT EXPOSURE:
Part Shade, Shade
MINIMUM HARDINESS ZONE:
MAXIMUM HARDINESS ZONE:
GERMINATION CODE:
WILDLIFE VALUE:
Butterfly Friendly, Bird Friendly
DEER RESISTANCE:
This information is derived from the U.S. Army Corps of Engineers 2016 National Wetland Plant List, Version 3.3 (Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X). Regions: AGCP-Atlantic and Gulf Coastal Plain, AK-Alaska, AW-Arid West, CB-Caribbean, EMP-Eastern Mountains and Piedmont, GP-Great Plains, HI-Hawaii, MW-Midwest, NCNE-Northcentral and Northeast, WMCV-Western Mountains, Valleys & Coast
2018 Natural Heritage Program List of Rare Plant Species of North Carolina
This information is derived from the 2018 North Carolina Natural Heritage Program List of Rare Plant Species.
WEAKLEY FLORA
SCIENTIFIC NAME: Chasmanthium sessiliflorum var. sessiliflorum
COMMON NAME: Longleaf Spikegrass
SYNONYMY: [< Chasmanthium sessiliflorum - C, FNA, GW, K, Tn, Va, W, Z; < Uniola sessiliflora Poiret - F, G, HC, RAB; < Uniola longifolia Scribner - S; < Chasmanthium laxum (Linnaeus) Yates var. sessiliflorum (Poiret) L. Clark - WH3]
PHENOLOGY: Aug-Oct.
HABITAT: Moist hardwood forests, swamps, other moist habitats.
COMMENTS: Widespread in se. North America, north to se. VA, TN, AR, and OK. This species and C. laxum are morphologically somewhat similar, but their treatment as varieties of a single species is completely unwarranted. They frequently co-occur (especially on the Gulf Coastal Plain), growing side by side, and show no sign of intergradation.
RANGE MAP: Chasmanthium sessiliflorum var. sessiliflorum.png
Key to Map SymbolsABOUT FAMILY (Weakley Flora) Poaceae (R. Brown) Barnhart 1895 or GRAMINEAE A.L. de Jussieu 1789 (Grass Family) SUMMARY: A family of about 771 genera and 12,074 species, herbs (and some shrubs and trees), cosmopolitan. Tribal classification largely follows FNA (2003a, 2007a), with some changes based on subsequent research, as for instance in the Chloridoideae (Peterson, Romaschenko, & Johnson 2010a). REFERENCE: Flora of North America Editorial Committee (2003a, 2007a)=FNA; Hitchcock and Chase (1950)=HC; Blomquist (1948); Peterson, Romaschenko, & Johnson (2010a, 2010b). Key to genera adapted in large part from FNA.ABOUT GENUS (Weakley Flora) Chasmanthium Link (Woodoats) SUMMARY: A genus of 5 species, perennials, endemic to se. North America. REFERENCE: Sánchez-Ken & Clark in FNA (2003a); Yates (1966a, 1966c)=Z.
HERBARIUM RESOURCES
SERNEC: Find Chasmanthium sessiliflorum in Southeast Regional Network of Experts and Collections (if available) UNC SERNEC: Find Chasmanthium sessiliflorum in
University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)