UW Burke Herbarium species comparison

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Soliva sessilis

lawn burrweed, common soliva, prickly soliva
Habit Glabrous, taprooted annuals, the stems prostrate to ascending, 2-5 cm. high or across, purplish, often rooting at the nodes.
Leaves

Leaves basal and cauline, 1-2 cm. long, oblanceolate, pinnati-palmately lobed.
Flowers

Heads scattered along stems, single in the leaf axils;

involucres 2-4 mm. in diameter;

corollas all tubular, 1.5-2.5 mm. long, the outer 5-8 pistillate, the inner 4-8 perfect;

pappus none.
Fruits

Achenes obovate to lanceolate, 2.5-3 mm. long, usually winged.

Soliva sessilis
Flowering time March-June
Habitat Disturbed areas, roadsides, and lawn areas at low elevations.
Distribution
Occurring west of the Cascades crest in lowland western Washington; British Columbia to California, also in south-central and southeastern U.S.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from South America
Conservation status Not of concern
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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