Plant Index


 
 
 

Andropogon glomeratus

Andropogon glomeratus (Walter) Britton, Sterns & Poggenb.

bushy bluestem, common bushy bluestem

Andropogon glomeratus (Bushy Bluestem)
Image ID: 10068
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: ANGL2
SCIENTIFIC NAME: Andropogon glomeratus
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:

DURATION: Perennial
HABIT: Grass/Grasslike

LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY: Simple
LEAF RETENTION: Deciduous

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:

Bloom Table Text:

NCBG Location:

Cultural Notes:

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

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
2745 1987-0230 View
4427 1992-0583 View
7384 2000-0127 2000-04-04 View
7510 2000-0268 2000-09-15 View
7698 2001-0052 2001-04-25 View
8146 2004-0156 2006-05-19 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
531 SOS 2015-10-13 Maynard View
610 SOS 2015-11-03 Driskill View
862 SOS 2016-11-03 Dakar View
892 SOS 2016-11-18 Faucette View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
4569 2745 8 NCBG staff 1978-11-24 View
6755 4427 200 NCBG staff 1993-03-01 View
10376 7384 143 NCBG staff 1999-08-15 View
10534 7510 123 Liloia 1999-05-01 View
11400 8146 200 NCBG staff 2003-02-14 View

USDA PLANTS DATABASE

USDA Symbol: ANGL2
USDA Common Name: Bushy Bluestem
Native Status: L48 (N), HI (I), PR (N), VI (I)
Distribution: USA (, AL, AR, AZ, CA, DC, DE, FL, GA, HI, IL, KY, LA, MA, MD, MS, NC, NJ, NM, NV, NY, OH, OK, PA, RI, SC, TN, TX, UT, VA, WV), USA+ (PR, VI)
Duration: Perennial
Growth Habit: Graminoid

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FACW FACW FAC FACW FACW FAC FACW 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: Andropogon glomeratus
COMMON NAME: Common Bushy Bluestem
SYNONYMY: [= Y; = A. glomeratus (Walter) Britton, Sterns, & Poggenburg var. glomeratus - FNA, K, Va, WH3, Z; < A. virginicus - RAB; = A. virginicus var. abbreviatus (Hackel) Fernald & Griscom - C, F, G, GW, WV; < A. glomeratus - HC, Pa, S, Tn, W]
PHENOLOGY: Sep-Oct.
HABITAT: Swamps, wet savannas, pine flatwoods, bogs, fens, depression ponds, interdune swales and ponds, wet disturbed sites.
COMMENTS: S. MA south to c. peninsular FL and west to s. MS, primarily on the Coastal Plain, but scattered inland to w. PA, WV, c. KY, c. TN and AR.
RANGE MAP: Andropogon glomeratus.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 glomeratus in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Andropogon glomeratus in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 10068
ID IMAGE2: 10068
ID IMAGE3: 0

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24 photo(s) available in the Image Gallery

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