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
Matthew Hulen
Gregory Gust
University of Florida Herbarium
. Eastern Nevada Landscape Coalition
Matthew Hulen
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