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Arnica angustifolia
No occurrences found
Family:
Asteraceae
narrowleaf arnica
Images
not available
FNA
Resources
Steven J. Wolf in Flora of North America (vol. 21)
Plants
5-40 cm.
Stems
usually simple, rarely branched.
Leaves
1-5 pairs, mostly cauline; petio-late (petioles broadly to narrowly winged, shorter than blades); blades broadly lanceolate to linear, 2-20 × 0.3-4 cm, margins entire or irregularly denticulate or dentate, apices acute or acuminate, faces glabrous or densely woolly-villous and stipitate-glandular.
Heads
1-3(-5; erect).
Involucres
hemispheric.
Phyllaries
9-22, usually narrowly to broadly lanceolate, sometimes oblanceolate.
Ray florets
6-16; corollas yellow.
Disc florets:
corollas yellow; anthers yellow.
Cypselae
brown, 3-8 mm, densely hirsute, rarely glandular;
pappi
white, bristles barbellate.
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