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Ambrosia hispida
Pursh
Family:
Asteraceae
Coastal Ragweed
[
Ambrosia crithmifolia
DC.]
University of Florida Herbarium
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.
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University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
Genevieve J Kline
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
Matthew Hulen
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
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