Ambrosia eriocentra
(A. Gray) W.W. Payne
Family:
Asteraceae
hollyleaf bursage,
more...
Woolly-Fruit Burr-Ragweed, woolly bursage, woolly fruit burr ragweed, wooly bursage
[
Franseria eriocentra
A. Gray]
Liz Makings
FNA
Resources
John L. Strother in Flora of North America (vol. 21)
Shrubs,
30-80(-120+) cm.
Stems
erect.
Leaves
mostly alternate; petioles 0-2 mm; blades (± white abaxially) elliptic, lance-linear, or rhombic, 10-40(-60) × 5-15(-40) mm, bases ± cuneate, margins irregularly toothed to ± laciniate, abaxial faces densely strigillose, adaxial faces tomentulose and pilosulous.
Pistillate heads
clustered, proximal to staminates; florets 1.
Staminate heads:
peduncles 0-0.5 mm; involucres saucer-shaped to shallowly cup-shaped, 4-8+ mm diam., tomentulose and/or pilose; florets 12-25+.
Burs:
bodies obconic to fusiform, 3-5+ mm, densely villous and stipitate-glandular, spines 12-20+, scattered or mostly distal, ± subulate, 3-4 mm, tips straight.
2
n
= 36.
Flowering Apr-May(-Jul). Sandy and gravelly washes; 700-1700 m; Ariz., Calif., Nev., Utah.
Open Interactive Map
Leslie Landrum
Liz Makings
Gregory Gust
Gregory Gust
Gregory Gust
Gregory Gust
Gregory Gust
Gregory Gust
Gregory Gust
Gregory Gust
Gregory Gust
Matthew Hulen
. Eastern Nevada Landscape Coalition
University of Florida Herbarium
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