Plant Index


 
 
 

Vernonia glauca

Vernonia glauca (L.) Willd.

broadleaf ironweed, appalachian ironweed, tawny ironweed

Vernonia glauca (Broadleaf Ironweed)
Image ID: 7922
Image by: Parkins, Grant Morrow
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: VEGL
SCIENTIFIC NAME: Vernonia glauca
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2018-02-13

GENUS INDEX

GENUS CODE: VERNO
GENUS SCIENTIFIC: Vernonia
GENUS AUTHORITY: Schreb.
GENUS COMMON: Ironweed
GENUS SUMMARY: A genus of about 20 species, perennial herbs, of e. and c. North America and n. Mexico; a few species in South America. Tradititionally very broadly circumscribed to include about 500 species, trees, shrubs, and herbs, of tropical, subtropical, and warm temperate regions, especially America and Africa; this broader circumscription appears increasingly indefensible.
GENUS IDENTIFICATION: Identification notes: Hybrids are frequent between co-occurring species. Only V. georgiana is keyed separately below (because of its distinctive appearance). Others may be recognized by intermediate morphology and ecological / geographic context.
GENUS REFERENCES: Strother in FNA (2006a); Jones (1982)=Z; Urbatsch (1972)=Y; Jones in Cronquist (1980)=SE. Key based on FNA and SE.

FAMILY INDEX

FAMILY CODE: ASTERA
FAMILY SCIENTIFIC: Asteraceae
FAMILY AUTHORITY: Dumortier 1822 or COMPOSITAE Giseke 1792
FAMILY COMMON: Aster Family
FAMILY SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
FAMILY REFERENCE: Cronquist (1980)=SE throughout family treatment.

NCBG DESCRIPTIVES

INTRO: Erect perennial of pastures, bottomlands and stream sides.
STEMS: Stems branched in inflorescence, smooth or sparsely hairy and with a white-waxy coating
LEAVES: Leaves alternate, on short petioles, oval to lance-shaped, toothed, dark green above and light green (usually with a white-waxy coating) beneath, minutely hairy.
INFLORESCENCE:
FLOWERS: Composite flowers (heads) in a branching, terminal cluster; heads purple-magenta, consisting of 30-48 spreading, tubular florets with 5 narrow lobes. Tiny triangular to lance-shaped bracts surround the bell-shaped base of each head.
FRUITS: Fruit a cluster of white- to straw-tufted, ridged achenes.
COMMENTS: An excellent nectar source for butterflies and bees.
HEIGHT: 3-5 ft.

DURATION: Perennial
HABIT: Herb

LEAF ARRANGEMENT: Alternate
LEAF COMPLEXITY: Simple
LEAF RETENTION:

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

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

FRUITING PERIOD: Aug-Oct.

DISTRIBUTION
HABITAT TYPE: Bottomlands
NATIVE RANGE: southeastern United States

HORTICULTURAL
Plant Sale Text: Broadleaf ironweed is found mainly in the piedmont region in dry fields, making this plant a great selection for a dry sunny site. Its tall stature is sited well in the back of a perennial border or for naturalizing a field. Purple-topped stems in late summer are butterfly magnets! Broadleaf ironweed will spread by seed. Pinch back the tips in early summer to yield a bushier form less likely to lean.

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Dry, Average
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE: 7
MAXIMUM HARDINESS ZONE: 8
GERMINATION CODE: 1
WILDLIFE VALUE: Bee Friendly, Butterfly Friendly
DEER RESISTANCE:

GRIM ACCESSIONS

acc_id acc_num acc_dt coll_id Action
311 2011-0178 2011-07-12 316 View
4028 1992-0184 View
5217 1995-0336 View
5520 1995-0643 View
6370 1995-1502 View
9140 2007-0021 2007-02-05 1566 View
9388 2021-0051 2021-04-05 0 View


GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
316 HORT 2009-08-17 Walker View
1566 HORT View
2163 NPMD 2019-08-13 Touloupas View
2242 NPMD 2019-09-18 Touloupas View
2245 NPMD 2019-09-20 Touloupas View
2253 NPMD 2019-09-24 Touloupas View


GRIM PLANTINGS

plt_num acc_id loc_num pers_num inst_dt Action
725 311 19 NCBG staff 2011-05-12 View
6356 4028 200 NCBG staff 1993-03-01 View
7670 5217 203 NCBG staff 1992-01-01 View
8034 5520 204 NCBG staff 1993-01-01 View
9025 6370 2 NCBG staff 0000-00-00 View
12007 9140 142 NCBG staff 1994-01-01 View
12638 9388 232 Wait 2020-06-26 View
12639 9388 233 Wait 2020-06-26 View

USDA PLANTS DATABASE

USDA Symbol: VEGL
USDA Common Name: Broadleaf Ironweed
Native Status: L48 (N)
Distribution: USA (AL, DC, DE, GA, KY, MD, MS, NC, NJ, PA, SC, TN, VA, WV)
Duration: Perennial
Growth Habit: Forb/herb

WEAKLEY FLORA

SCIENTIFIC NAME: Vernonia glauca
COMMON NAME: Appalachian Ironweed, Tawny Ironweed
SYNONYMY: [= C, F, FNA, G, K, Pa, S, RAB, SE, Va, W, WV]
PHENOLOGY: Late Jun-Sep; Aug-Oct.
HABITAT: Pastures, bottomlands, streamsides.
COMMENTS: NJ and PA south to GA, AL, and MS.
RANGE MAP: Vernonia glauca.png

Key to Map Symbols
ABOUT FAMILY (Weakley Flora)
Asteraceae Dumortier 1822 or COMPOSITAE Giseke 1792 (Aster Family)
SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution.
REFERENCE: Cronquist (1980)=SE throughout family treatment.
ABOUT GENUS (Weakley Flora)
Vernonia Schreb. (Ironweed)
SUMMARY: A genus of about 20 species, perennial herbs, of e. and c. North America and n. Mexico; a few species in South America. Tradititionally very broadly circumscribed to include about 500 species, trees, shrubs, and herbs, of tropical, subtropical, and warm temperate regions, especially America and Africa; this broader circumscription appears increasingly indefensible.
REFERENCE: Strother in FNA (2006a); Jones (1982)=Z; Urbatsch (1972)=Y; Jones in Cronquist (1980)=SE. Key based on FNA and SE.

HERBARIUM RESOURCES

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

WEB RESOURCES

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

NCBG IMAGE RECORDS

ID IMAGE1: 7922
ID IMAGE2: 0
ID IMAGE3: 7922

From the Image Gallery


Image ID: 7923

Image ID: 18099

Image ID: 12186
4 photo(s) available in the Image Gallery

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