Plant Index


 
 
 
 

Andropogon gyrans

Andropogon gyrans Ashe

elliott’s bluestem

Andropogon gyrans (Elliott’s Bluestem)
Image ID: 10071
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: ANGY2
SCIENTIFIC NAME: Andropogon gyrans
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2020-01-01

GENUS INDEX

GENUS CODE: ANDRO2
GENUS SCIENTIFIC: Andropogon
GENUS AUTHORITY: L.
GENUS COMMON: Bluestem
GENUS SUMMARY: A genus of about 100-110 species, mainly tropical. Campbells work (1983, et seq.) has greatly clarified the taxonomy of Andropogon in e. North America. Great confusion and disagreement were previously the rule in dealing with the A. virginicus-A. glomeratus complex. Campbells careful morphologic work has provided workable technical characters which distinguish the taxa he recognizes. I have generally followed Campbell (1983, et seq.) in his circumscriptions of taxa, but have differed in decisions of rank; see Weakley et al. (2011) for discussion. Taxa differing in numerous morphologic characters, with different (though overlapping) geographic ranges, with different ecological preferences (often rather narrowly segregated by hydrology), and (when they do occur in proximity to one another) showing little or no sign of introgression or hybridization are probably better treated as biological species. Thus, I have treated a number of Campbells varieties as species. Several of his variants also warrant taxonomic recognition, at varietal or specific rank (Campbell 1986; Weakley et al. 2011).
GENUS IDENTIFICATION: Identification notes: A thorough understanding of the architecture of the inflorescences of Andropogon is necessary in order to identify them successfully. The parts will be described, beginning from the apex of a branch of the inflorescence. Spikelets occur in pairs, the sessile spikelet (usually just referred to as the spikelet) and the pedicelled spikelet, which is usually vestigial or absent (except in A. gerardi) and sterile (except in A. gerardi, where it is staminate). The first or lower glume of the sessile spikelet has two keels, and the presence and location of antrorse prickle hairs (scabrousness) is an important character in the A. glomeratus complex. The length of the sessile spikelet is an important character; it should be measured exclusive of the awn, borne at the apex of the lemma. Awn length is also a useful taxonomic character. The pedicelled spikelet is borne on the pedicel, which is attached at the base of the sessile spikelet and typically angles away from it at about a 45 degree angle. The rachis internode extends from the base of one sessile spikelet to the next sessile spikelet above, breaking apart (upon dehiscence) just below the next spikelet and remaining attached to the sessile spikelet below. The dispersal unit consists of a sessile spikelet sitting in the V shape formed by (on one side) the pedicel and pedicelled spikelet and (on the other side) the rachis internode. Both the pedicel and the rachis internode are usually pubescent with long hairs, and the color of those hairs and their distribution are useful characters.
GENUS REFERENCES: Campbell (1983)=Z; Campbell in FNA (2003a); Weakley et al. (2011)=Y. Key adapted in part from 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: 2-3 ft.

DURATION: Perennial
HABIT: Grass/Grasslike

LEAF ARRANGEMENT:
LEAF COMPLEXITY:
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: Sep-Oct
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
x x x x

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

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE:
NATIVE RANGE: eastern United States

HORTICULTURAL
Plant Sale Text: This heat tolerant, warm-season native bunchgrass is found throughout North Carolina in moist woodlands, savannas, prairies, and fields. Its foliage turns a warm coppery brown in the fall and persists throughout the winter, providing shelter for insects and birds. Like many native grasses, the seeds of Elliott's bluestem are an excellent source of food for birds.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Dry, Average
LIGHT EXPOSURE: Sun, Part Shade
MINIMUM HARDINESS ZONE: 6
MAXIMUM HARDINESS ZONE: 10
GERMINATION CODE:
WILDLIFE VALUE: Bird Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
128 2010-0040 2010-11-04 129 View
9305 2020-0028 2021-01-12 0 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
129 HORT 2009-11-30 NCBG staff View
2071 HORT 2017-11-08 Liloia View
2072 HORT 2013 Liloia View
2076 NPMD 2020-11-23 Adams View
2121 NPMD 2020-11-19 Marzolf View
2414 NPMD 2020-11-07 Kunz View
2438 NPMD 2020-11-03 Kunz View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
238 128 102 Liloia 2010-10-06 View
239 128 23 Liloia 2011-08-12 View
241 128 12 Liloia 2011-02-07 View
12440 9305 16 Liloia 2020-10-15 View
12803 0 15 Liloia 0000-00-00 View

USDA PLANTS DATABASE

USDA Symbol: ANGY2
USDA Common Name: Elliott's Bluestem
Native Status: L48 (N)
Distribution: USA (AL, AR, DC, DE, FL, GA, IL, IN, KY, LA, MD, MO, MS, NC, NJ, OH, OK, PA, SC, TN, TX, VA, WV)
Duration: Perennial
Growth Habit: Graminoid

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FACU FACU FACU FACU

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: Andropogon gyrans
COMMON NAME: Elliottís Bluestem
SYNONYMY: [= C, Pa, Tn, Va, W; = A. elliottii Chapman - HC, WV; > A. elliottii - RAB, S; > A. campyloracheus Nash - RAB, S; = A. gyrans Ashe - C, W; = A. gyrans var. gyrans - FNA, K, WH3, Z; > A. elliottii var. elliottii - F, G; > A. elliottii var. gracilior Hackel - F, G; > A. elliottii var. projectus Fernald & Griscom - G]
PHENOLOGY: Sep-Oct.
HABITAT: Dry to moist forests, woodlands, sandhills, fields, and disturbed areas.
COMMENTS: S. NJ west to s. IN, s. IL, s. MO, south to s. FL and TX. Campbell (1983) argued that the name A. elliottii should be replaced by A. gyrans; Ward (2004c) argues for retention of the traditional A. elliottii. We here follow Campbell.
RANGE MAP: Andropogon gyrans.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)
Andropogon L. (Bluestem)
SUMMARY: A genus of about 100-110 species, mainly tropical. Campbells work (1983, et seq.) has greatly clarified the taxonomy of Andropogon in e. North America. Great confusion and disagreement were previously the rule in dealing with the A. virginicus-A. glomeratus complex. Campbells careful morphologic work has provided workable technical characters which distinguish the taxa he recognizes. I have generally followed Campbell (1983, et seq.) in his circumscriptions of taxa, but have differed in decisions of rank; see Weakley et al. (2011) for discussion. Taxa differing in numerous morphologic characters, with different (though overlapping) geographic ranges, with different ecological preferences (often rather narrowly segregated by hydrology), and (when they do occur in proximity to one another) showing little or no sign of introgression or hybridization are probably better treated as biological species. Thus, I have treated a number of Campbells varieties as species. Several of his variants also warrant taxonomic recognition, at varietal or specific rank (Campbell 1986; Weakley et al. 2011).
REFERENCE: Campbell (1983)=Z; Campbell in FNA (2003a); Weakley et al. (2011)=Y. Key adapted in part from Z.

HERBARIUM RESOURCES

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

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 10071
ID IMAGE2: 10071
ID IMAGE3: 39902

From the Image Gallery


Image ID: 10072

Image ID: 39902

Image ID: 35713
4 photo(s) available in the Image Gallery

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