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Ambrosia cordifolia
(A. Gray) W.W. Payne
Family:
Asteraceae
Sonoran bursage,
more...
heartleaf bursage, Tucson burr ragweed (es: chicurilla)
[
Franseria cordifolia
A. Gray]
Thomas Van Devender
Flora of North America
Resources
John L. Strother in Flora of North America (vol. 21)
Shrubs,
30-50+ cm.
Stems
erect.
Leaves
mostly alternate; petioles 3-35 mm; blades deltate to rounded-deltate, 10-35(-80) × 10-30(-70) mm, bases cordate to truncate, margins coarsely toothed, abaxial faces densely puberulent (including veins), adaxial faces strigillose to scabrellous and gland-dotted.
Pistillate heads
clustered, proximal to staminates; florets (1-)2.
Staminate heads:
peduncles 0-1 mm; involucres cup-shaped, 2-3(-5) mm diam., strigillose; florets 8-30+.
Burs:
bodies ± globose to fusiform, 3-4+ mm, tomentulose and stipitate-glandular, spines 8-20+, scattered, ± subulate (basally navicular), 1-2 mm, tips straight or uncinate. Flowering Mar-Apr. Sandy washes, benches; 700-1200 m; Ariz.; Mexico (Sinaloa, Sonora).
Open Interactive Map
Liz Makings
Liz Makings
Thomas Van Devender
Thomas Van Devender
Thomas Van Devender
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15 Total Images