Plant Index

 
 
 
 

Chasmanthium laxum

Chasmanthium laxum (L.) Yates

slender woodoats, slender spikegrass

Chasmanthium laxum (Slender Woodoats)
Image ID: 25801
Image by: Liloia, Chris
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: CHLA6
SCIENTIFIC NAME: Chasmanthium laxum
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2019-01-22

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.

NCBG DESCRIPTIVES

INTRO:
STEMS:
LEAVES:
INFLORESCENCE:
FLOWERS:
FRUITS:
COMMENTS:
HEIGHT: 2 ft.
DURATION: Perennial
HABIT: Grass/Grasslike
LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY: Simple
LEAF RETENTION:
FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: June-Oct
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
x x x x x x x

BLOOM COLOR:
White Red Pink Orange Yellow Green Blue Lavender Purple Violet Brown Not Applicable
x

FRUITING PERIOD:
DISTRIBUTION
HABITAT TYPE: Bogs/pocosins, Sandhills
NATIVE RANGE: eastern & central United States
HORTICULTURAL
Plant Sale Text: Slender woodoats is a SE native grass that produces subtly beautiful upright seed heads. Its tiny seeds are borne in arching panicles. This species is smaller in stature than the better-known river-oats. It is tolerant of low light levels and various soil types. This species is commonly found near bodies of water and grows well in open-canopy forests. Easy to grow in almost any garden, it will reseed unless its seed heads are removed before the seeds drop. The Chasmanthium genus supports up to 7 species of lepidoptera.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Average, Moist/Wet
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE: 5
MAXIMUM HARDINESS ZONE: 9
GERMINATION CODE: 1
WILDLIFE VALUE: Butterfly Friendly, Bird Friendly
DEER RESISTANCE:

GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
198 HORT 2008-09-27 Liloia View
300 HORT 2010-01-01 Bryan View
868 SOS 2016-11-16 Dakar View
1308 HORT 2006-01-01 Liloia View
1782 HORT 2005-01-01 Bryan View
1813 HORT 2006-10-01 Bryan View
2108 NPMD 2020-09-10 Marzolf View
2311 NPMD 2019-10-21 Touloupas View
2360 NPMD 2019-11-20 Touloupas View
2366 NPMD 2019-11-21 Touloupas View
2367 NPMD 2019-11-21 Touloupas View
2503 NPMD 2021-08-02 Marzolf View
2699 NPMD 2022-08-17 Marzolf View
2738 NPMD 2022-09-14 Searles View
2785 NPMD 2023-08-21 Meng View

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
199 2011-0010 2011-01-07 198 View
295 2011-0160 2011-07-09 300 View
400 2010-0046 2010-11-04 View
3566 1991-0222 View
4226 1992-0382 View
8015 2004-0023 2004-05-21 View
9135 2006-0408 2006-11-07 1308 View
9441 2021-0100 2021-07-01 0 View

GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
396 199 14 NCBG staff 2011-04-21 View
698 295 14 Liloia 2011-07-06 View
699 295 111 Liloia 2011-07-06 View
700 295 101 Liloia 2011-07-11 View
946 400 100 Liloia 2010-10-19 View
5829 3566 6 NCBG staff 1991-08-09 View
6554 4226 200 NCBG staff 1993-03-01 View
11263 8015 123 NCBG staff 2003-03-03 View
11939 9135 133 NCBG staff 2006-10-31 View
12357 295 15 Liloia 2014-08-26 View
12715 0 12 Liloia 0000-00-00 View
12777 9441 14 Liloia 0000-00-00 View
12855 0 21 Liloia 0000-00-00 View

USDA PLANTS DATABASE

USDA Symbol: CHLA6
USDA Common Name: Slender Woodoats
Native Status: L48 (N)
Distribution: USA (AL, AR, DC, DE, FL, GA, KY, LA, MD, MO, MS, NC, NJ, NY, OK, PA, SC, TN, TX, VA)
Duration: Perennial
Growth Habit: Graminoid

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FACW FAC FAC FACW FACW

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

WEAKLEY FLORA

SCIENTIFIC NAME: Chasmanthium laxum
COMMON NAME: Slender Spikegrass
SYNONYMY: [= C, FNA, GW, K, Pa, Tn, Va, W, Z; = Uniola laxa (Linnaeus) Britton, Sterns, & Poggenburg - RAB, F, G, HC, S; = Chasmanthium laxum var. laxum - WH3]
PHENOLOGY: Jun-Oct.
HABITAT: Savanna-pocosin ecotones, sandhill-pocosin ecotones, moist hardwood swamps, other moist habitats.
COMMENTS: S. NY, KY, and OK south to s. FL and e. TX. See C. sessiliflorum for comments on the suggestion that these two taxa are only varietally distinct.
RANGE MAP: Chasmanthium laxum.png

Key to Map Symbols
ABOUT 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 laxum in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Chasmanthium laxum in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

USDA: Find Chasmanthium laxum in USDA Plants
NPIN: Find Chasmanthium laxum in NPIN Database
FNA: Find Chasmanthium laxum in the Flora of North America (if available)
Google: Search Google for Chasmanthium laxum

IMAGE USE RECORDS

ID IMAGE: 25801 - Primary Image FloraQuest Plant Detail Page (Landscape Preferred)
ID IMAGE1: 25801 - Primary Image WOTAS
ID IMAGE2: 0 - Secondary Image WOTAS
ID IMAGE3: 25801 - Primary Image Plant Sale Sign (Landscape Only)
ID IMAGE4: 0 - Primary Image New Plant Sale Label (Portrait Only)

From the Image Gallery


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6 photo(s) available in the Image Gallery

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