North Carolina Botanical Garden

Plant Index

Scientific Name:
Common Name:
Genus:
Family:

Tridens ambiguus

Tridens ambiguus (Elliott) Schult.

flatwoods fluffgrass, pineland triodia

PLANT INDEX

ID_PLANT: TRAM
SCIENTIFIC NAME: Tridens ambiguus
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2020-01-01

GENUS INDEX

GENUS CODE: TRIDE
GENUS SCIENTIFIC: Tridens
GENUS AUTHORITY: Roem. & Schult.
GENUS COMMON: Tridens
GENUS SUMMARY: A genus of about 14 species, native to the Western Hemisphere.
GENUS IDENTIFICATION:
GENUS REFERENCES: Valdés-Reyna in FNA (2003a). [also see Tridentopsis]

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:

DURATION: Perennial
HABIT: Grass/Grasslike

LEAF ARRANGEMENT:
LEAF COMPLEXITY:
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: Aug-Oct

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
								x	x

BLOOM COLOR:

White	Red	Pink	Orange	Yellow	Green	Blue	Lavender	Purple	Violet	Brown	Not Applicable

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE:
NATIVE RANGE:

HORTICULTURAL
Plant Sale Text:

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE:
LIGHT EXPOSURE:
MINIMUM HARDINESS ZONE:
MAXIMUM HARDINESS ZONE:
GERMINATION CODE:
WILDLIFE VALUE:
DEER RESISTANCE:

USDA PLANTS DATABASE

USDA Symbol: TRAM
USDA Common Name: Pine Barren Fluffgrass
Native Status: L48 (N)
Distribution: USA (AL, FL, GA, LA, MS, NC, SC, TX)
Duration: Perennial
Growth Habit: Graminoid

NATIONAL WETLAND INDICATOR STATUS

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FACW				FACW	FAC

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

NHP ID	S RANK	ROUNDED S RANK	G RANK	ROUNDED G RANK	STATE STATUS	FEDERAL STATUS
15907	S1	S1	G4	G4	E

This information is derived from the 2018 North Carolina Natural Heritage Program List of Rare Plant Species.

WEAKLEY FLORA

SCIENTIFIC NAME: Tridens ambiguus
COMMON NAME: Pineland Triodia, Flatwoods Fluffgrass
SYNONYMY: [= FNA, GW, HC, K, RAB, WH3; = Triodia elliottii Bush - S]
PHENOLOGY: Aug-Oct.
HABITAT: Wet savannas, clay-based Carolina bays, marshes.
COMMENTS: S. NC south to FL, west to e. TX.
RANGE MAP: Tridens ambiguus.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)
Tridens Roem. & Schult. (Tridens)
SUMMARY: A genus of about 14 species, native to the Western Hemisphere.
REFERENCE: Valdés-Reyna in FNA (2003a). [also see Tridentopsis]

HERBARIUM RESOURCES

SERNEC: Find Tridens ambiguus in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Tridens ambiguus in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

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

IMAGE USE RECORDS

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

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