Plant Index


 
 
 
 

Bidens laevis

Bidens laevis (L.) Britton, Sterns & Poggenb.

showy bur-marigold, smooth beggartick

Synonym(s): Bidens elegans, Bidens nashii, Helianthus laevis
Bidens laevis (Showy Bur-marigold)
Image ID: 10420
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library

PLANT INDEX

ID_PLANT: BILA
SCIENTIFIC NAME: Bidens laevis
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2018-02-07

GENUS INDEX

GENUS CODE: BIDEN
GENUS SCIENTIFIC: Bidens
GENUS AUTHORITY: L.
GENUS COMMON: Beggarticks
GENUS SUMMARY: A genus of about 240 species, herbs, cosmopolitan. Recent molecular studies suggest that the relationship between Bidens and Coreopsis is complex, and that changes in taxonomy will be needed to more accurately reflect relationships (Kim et al. 1999; Crawford & Mort 2005).
GENUS IDENTIFICATION: Identification notes: The involucre of phyllaries is subtended by an additional series of bracteal structures, the calyculus.
GENUS REFERENCES: Strother & Weedon in FNA (2006c); Cronquist (1980)=SE; Sherff & Alexander (1955)=Z; Ballard (1986)=Y. Key based on FNA.

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 annual/perennial with prostrate, elongate, rooting bases, found in marshes, pond edges, stream banks and ditches.
STEMS: Stems unbranched to freely branched and smooth.
LEAVES: Leaves opposite, usually sessile, oval or lance-shaped, 1 1/2-6 in. long, not lobed, finely toothed and smooth.
INFLORESCENCE:
FLOWERS: Composite flowers (heads) 1-several terminating stem, erect or often nodding in age; heads 1 1/2-2 1/2 in. wide, consisting of 7-8 yellow ray florets encircling a slightly domed central disk of dark yellow, 5-lobed tubular florets; 2 series of bracts--the inner pale yellow and oval and the outer green and narrower--surround the base of each head.
FRUITS: Fruit a flat or angled achene with 2-4 barbed awns.
COMMENTS: Similar to Bidens cernua; ray florets of B. laevis are at least as long as the outer bracts.
HEIGHT: 1-3 ft. (occasionally to 7 ft.)

DURATION: Annual, Perennial
HABIT: Herb

LEAF ARRANGEMENT: Opposite
LEAF COMPLEXITY: Simple
LEAF RETENTION: Deciduous

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

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

FRUITING PERIOD:

DISTRIBUTION
HABITAT TYPE: Aquatic, Bottomlands, Disturbed
NATIVE RANGE:

HORTICULTURAL
Plant Sale Text:

Bloom Table Text:

NCBG Location:

Cultural Notes:

SOIL MOISTURE: Average, Moist/Wet
LIGHT EXPOSURE: Sun, Part Shade, Shade
MINIMUM HARDINESS ZONE:
MAXIMUM HARDINESS ZONE:
GERMINATION CODE:
WILDLIFE VALUE:
DEER RESISTANCE:

GRIM COLLECTIONS

Coll_id Project Collection date Collector Action
896 SOS 2016-11-17 Faucette View

USDA PLANTS DATABASE

USDA Symbol: BILA
USDA Common Name: Smooth Beggartick
Native Status: L48 (N)
Distribution: USA (AL, AR, AZ, CA, CT, DC, DE, FL, GA, IN, KY, LA, MA, MD, ME, MO, MS, NC, NH, NJ, NM, NV, NY, OH, PA, RI, SC, TN, TX, VA, WV)
Duration: Annual, Perennial
Growth Habit: Forb/herb

NATIONAL WETLAND INDICATOR STATUS

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: OBL OBL OBL OBL OBL OBL OBL

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: Bidens laevis
COMMON NAME: Showy Bur-marigold
SYNONYMY: [= C, F, FNA, G, GW, Il, K, Pa, RAB, SE, Va, W, WH3, Z; > B. laevis - S; > B. nashii Small - S]
PHENOLOGY: Aug-Nov.
HABITAT: Marshes, stream banks, ditches.
COMMENTS: ME, NY, IN, MO, NV, and CA southward.
RANGE MAP: Bidens laevis.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)
Bidens L. (Beggarticks)
SUMMARY: A genus of about 240 species, herbs, cosmopolitan. Recent molecular studies suggest that the relationship between Bidens and Coreopsis is complex, and that changes in taxonomy will be needed to more accurately reflect relationships (Kim et al. 1999; Crawford & Mort 2005).
REFERENCE: Strother & Weedon in FNA (2006c); Cronquist (1980)=SE; Sherff & Alexander (1955)=Z; Ballard (1986)=Y. Key based on FNA.

HERBARIUM RESOURCES

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

WEB RESOURCES

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

IMAGE USE RECORDS

ID IMAGE: 10420 - Primary Image FloraQuest Plant Detail Page (Landscape Preferred)
ID IMAGE1: 10420 - Primary Image WOTAS
ID IMAGE2: 0 - Secondary Image WOTAS
ID IMAGE3: 0 - Primary Image Plant Sale Sign (Landscape Only)
ID IMAGE4: 0 - Primary Image New Plant Sale Label (Portrait Only)

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34 photo(s) available in the Image Gallery

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