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Ambrosia hispida
Pursh
Family:
Asteraceae
Coastal Ragweed
Tom
FNA
Resources
John L. Strother in Flora of North America (vol. 21)
Perennials,
10-50(-80+) cm.
Stems
prostrate or decumbent.
Leaves
mostly opposite; petioles 5-25 mm; blades rounded-deltate to ovate or elliptic, 20-35+ × 10-30+ mm, 2-3-pinnately lobed, bases cuneate, ultimate margins entire or toothed, abaxial and adaxial faces strigillose.
Pistillate heads
clustered, proximal to staminates; florets 1.
Staminate heads:
peduncles 1-2 mm; involucres obliquely cup-shaped, 2-3+ mm diam., strigillose; florets 5-20+.
Burs:
bodies ± pyriform, 1-2 mm, ± strigillose, spines or tubercles 0-5+, near middles or distal, stoutly conic, 0.1-0.5+ mm, tips straight.
2
n
= 104. Flowering Apr. Sandy beaches or strand; 0-10 m; Fla.; West Indies (Bahamas); Central America.
Open Interactive Map
Susan J. Hewitt
Susan J. Hewitt
Susan J. Hewitt
Josiah Londeree
Claire O'Neill
jade fortnash
Alan R. Franck
Susan J. Hewitt
Susan J. Hewitt
Susan J. Hewitt
Tom
Susan J. Hewitt
barbijd92
Susan J. Hewitt
Erik
Claire O'Neill
jliebelt
Susan J. Hewitt
bacabitch
botanygirl
Susan J. Hewitt
Noah Frade
Jay Horn
deadbilly
mollyd_delraybeach
leeloo0410
BJ Stacey
Susan J. Hewitt
florida12
Susan J. Hewitt
Robert Webster
Susan J. Hewitt
Teri
Alison Northup
barbijd92
Patrick Jackson
Jeff Chapman
Pete Corradino
Caroline
jade fortnash
Alan R. Franck
Susan J. Hewitt
Susan J. Hewitt
Susan J. Hewitt
Tom
Keith Bradley
annalida
Susan J. Hewitt
Josiah Londeree
Claire O'Neill
jade fortnash
Matt Parr
Robby Deans
Betina Colley
mark-groeneveld
Susan J. Hewitt
barbijd92
Jay Horn
Erik
Ryne Rutherford
Susan J. Hewitt
Jonathan Irons
BJ Stacey
bacabitch
botanygirl
Susan J. Hewitt
Susan J. Hewitt
Susan J. Hewitt
Teri
Alison Northup
barbijd92
bacabitch
Susan J. Hewitt
Patrick Jackson
sueque88
Caroline
Robert Webster
Alan R. Franck
Susan J. Hewitt
Tom
B. Michelle Mayes
Jeff Steele
Tom
the_cool_moth
barbijd92
B. Michelle Mayes
Claire Herzog
Tom
B. Michelle Mayes
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This project made possible through support from the UF Planning, Design & Construction and the UF Office of Sustainability
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