Plant Index


 
 
 
 

Andropogon ternarius

Andropogon ternarius Michx.

split-beard bluestem, splitbeard bluestem

Andropogon ternarius (Split-beard Bluestem)
Image ID: 10093
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: ANTE2
SCIENTIFIC NAME: Andropogon ternarius
Include in WOTAS: 0
Publish to Web: 1
Last Modified: 2019-10-14

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: Silvery Tufted Bloom.
FRUITS:
COMMENTS:
HEIGHT: 1.5-4 ft.

DURATION: Perennial
HABIT: Grass/Grasslike

LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY: Simple
LEAF RETENTION:

FLORAL CHARACTERISTICS
SYMMETRY:
BLOOM TIME: Aug-Nov
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: southeastern United States

HORTICULTURAL
Plant Sale Text: This wonderful prairie native boasts great fall color and an attractive late summer bloom. It will thrive in a wide variety of soils as long they are well drained. Try planting it somewhere sandy or rocky. The dried inflorescence can be incorporated into flower arrangements to great effect. Like many native grasses, the seeds of split-beard bluestem are an excellent source of food for birds. The genus Andropogon supports up to 11 species of lepidoptera.

Bloom Table Text: This wonderful prairie native boasts great fall color and an attractive late summer bloom. It will thrive in a wide variety of soils as long they are well drained. Try planting it somewhere sandy or rocky. The dried inflorescence can be incorporated into flower arrangements to great effect. Like many native grasses, the seeds of split-beard bluestem are an excellent source of food for birds. The genus Andropogon supports up to 11 species of lepidoptera.

NCBG Location: Education Center Landscape, Piedmont Habitat

Cultural Notes:

SOIL MOISTURE: Well-drained
LIGHT EXPOSURE: Sun, Part Shade
MINIMUM HARDINESS ZONE: 6
MAXIMUM HARDINESS ZONE: 9
GERMINATION CODE: 2
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly, Bird Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
132 2010-0044 2010-11-04 133 View
401 2013-0031 2020-01-27 133 View
3576 1991-0232 View
3647 1991-0333 View
4339 1992-0495 View
5742 1995-0868 View
5939 1995-1068 View
7041 1998-0327 1998-11-18 View
7336 2000-0073 2000-03-14 View
7397 2000-0140 2000-04-05 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
133 HORT 2009-11-30 NCBG staff View
2297 NPMD 2019-10-16 Touloupas View
2309 NPMD 2019-10-17 Touloupas View
2357 NPMD 2019-11-20 Touloupas View
2413 NPMD 2020-11-07 Kunz View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
251 132 102 Liloia 2010-10-06 View
252 132 19 NCBG staff 2011-03-01 View
253 132 14 NCBG staff 2011-03-01 View
254 132 21 Liloia 2011-08-12 View
709 132 106 Liloia 2011-07-11 View
710 132 101 Liloia 2011-07-11 View
947 401 21 Liloia 2013-10-04 View
5839 3576 58 NCBG staff 1990-10-25 View
5948 3647 27 NCBG staff 1991-06-21 View
6667 4339 200 NCBG staff 1993-03-01 View
8256 5742 204 NCBG staff 1993-01-01 View
8500 5939 2 NCBG staff 1992-01-01 View
9919 7041 57 NCBG staff 1967-12-01 View
10304 7336 172 NCBG staff 2000-03-08 View
10305 7336 175 NCBG staff 2000-03-08 View
10393 7397 143 NCBG staff 1999-08-01 View
12491 401 20 Liloia 0000-00-00 View
12653 401 19 NCBG staff 0000-00-00 View
12804 0 15 Liloia 0000-00-00 View
12819 0 18 Liloia 0000-00-00 View
12848 401 14 Liloia 0000-00-00 View
12851 0 17 Liloia 0000-00-00 View

USDA PLANTS DATABASE

USDA Symbol: ANTE2
USDA Common Name: Splitbeard Bluestem
Native Status: L48 (N)
Distribution: USA (AL, AR, DC, DE, FL, GA, IL, IN, KS, KY, LA, MD, MO, MS, NC, NJ, OK, SC, TN, TX, VA)
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 ternarius
COMMON NAME: Splitbeard Bluestem
SYNONYMY: [= HC, S; = A. ternarius var. ternarius - FNA, K1, Va, Z; < A. ternarius - C, G, K2, RAB, Tn, W, WH3; > A. ternarius var. ternarius - F; > A. ternarius var. glaucescens (Scribner) Fernald & Griscom - F]
PHENOLOGY: Sep-Oct.
HABITAT: Sandhills, dry to moist soils of woodlands and openings.
COMMENTS: DE west to KY and s. MO, south to FL and TX. A. cabinisii Hackel, sometimes treated as A. ternarius var. cabanisii (Hackel) Fernald & Griscom, is endemic in s. and c. peninsular FL.
RANGE MAP: Andropogon ternarius.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 ternarius in Southeast Regional Network of Experts and Collections (if available)
UNC SERNEC: Find Andropogon ternarius in University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 10093
ID IMAGE2: 10088
ID IMAGE3: 10093

From the Image Gallery


Image ID: 10088

Image ID: 10089

Image ID: 10090

Image ID: 10091

Image ID: 10092

Image ID: 10094

Image ID: 35724

Image ID: 35725

Image ID: 35726

Image ID: 10577

Image ID: 28456

Image ID: 28457

Image ID: 28458

Image ID: 28459

Image ID: 28460

Image ID: 28461
17 photo(s) available in the Image Gallery

Go back