Difference between revisions of "Arnica dealbata"
Novon 9: 460. 1999.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Revision as of 20:41, 16 December 2019
Plants 15–35 cm. Stems mostly simple. Leaves 3–8 pairs, mostly crowded toward bases; petiolate (at least proximal); blades elliptic to oblanceolate or obovate, 5–10 × 0.5–3.5 cm, margins entire, apices acute, faces densely hairy (hairs relatively short, curly) and sessile-glandular (distal leaves sessile, much reduced). Heads 1–6. Involucres campanulate to hemispheric. Phyllaries 5–12 (in 1 series), oblong or elliptic. Ray florets 5–12; corollas yellow. Disc florets (functionally staminate): corollas yellow; anthers yellow (styles rarely exserted). Cypselae brown to black, 4–10 mm, sparsely to densely hirsute (hairs usually simple, rarely duplex) and sparsely stipitate-glandular; pappi 0. 2n = 38, 76.
Phenology: Flowering Jun–Aug.
Habitat: Open forests, meadows, slopes
Elevation: 1200–2400 m
Discussion
Although Arnica dealbata lacks pappi, morphologic, cytologic, and molecular data (B. G. Baldwin and B. L. Wessa 2000; Baldwin et al. 2002) clearly support its inclusion in Arnica.
Selected References
None.