Plant Index


 
 
 

Andropogon virginicus

Andropogon virginicus L.

broomstraw, broomsedge bluestem

Andropogon virginicus (Broomstraw)
Image ID: 10104
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: ANVI2
SCIENTIFIC NAME: Andropogon virginicus
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2019-01-15

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

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

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE:
NATIVE RANGE: eastern N. America to Central America

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
131 2010-0043 2010-11-04 132 View
1893 1986-1674 View
3329 1990-0196 View
4201 1992-0357 View
5369 1995-0491 View
5743 1995-0869 View
7272 2000-0004 2000-01-07 View
7337 2000-0074 2000-03-14 View
7697 2001-0051 2001-04-25 View
8262 2004-0292 2006-08-30 View
8605 2006-0185 2006-08-15 View
9335 2021-0003 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
132 HORT 2010-02-01 Poythress View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
250 131 102 Liloia 2010-10-06 View
2989 1893 64 NCBG staff 1984-03-11 View
5531 3329 54 NCBG staff 0000-00-00 View
5532 3329 55 NCBG staff 0000-00-00 View
5533 3329 57 NCBG staff 0000-00-00 View
5534 3329 58 NCBG staff 0000-00-00 View
5535 3329 52 NCBG staff 2007-06-04 View
5536 3329 51 NCBG staff 2007-06-04 View
6529 4201 200 NCBG staff 1993-03-01 View
7847 5369 203 NCBG staff 1992-01-01 View
8257 5743 204 NCBG staff 1993-01-01 View
10228 7272 96 NCBG staff 1999-05-01 View
10306 7337 172 NCBG staff 2000-03-08 View
10307 7337 175 NCBG staff 2000-03-08 View
10885 7697 200 NCBG staff 1967-12-01 View
11534 8262 123 NCBG staff 2001-01-01 View
11794 8605 205 Liloia 2005-01-01 View
12492 9335 20 Liloia 0000-00-00 View
12751 0 23 Liloia 0000-00-00 View
12780 0 14 Liloia 0000-00-00 View
12796 0 17 Liloia 0000-00-00 View
12805 0 15 Liloia 0000-00-00 View
12831 0 18 Liloia 0000-00-00 View

USDA PLANTS DATABASE

USDA Symbol: ANVI2
USDA Common Name: Broomsedge Bluestem
Native Status: L48 (N), HI (I), PR (N), CAN (N)
Distribution: USA (AL, AR, CA, CT, DC, DE, FL, GA, HI, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, MS, NC, NJ, NY, OH, OK, PA, RI, SC, TN, TX, UM, VA, WV), USA+ (PR), CAN (ON)
Duration: Perennial
Growth Habit: Graminoid

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: FAC FAC FAC FACU FACU FACU FACU FACU 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

WEAKLEY FLORA

SCIENTIFIC NAME:
COMMON NAME:
SYNONYMY:
PHENOLOGY:
HABITAT:
COMMENTS:
RANGE MAP:

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

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 10104
ID IMAGE2: 0
ID IMAGE3: 0

From the Image Gallery


Image ID: 10100

Image ID: 10101

Image ID: 10102

Image ID: 10103
5 photo(s) available in the Image Gallery

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