Ionactis alpina |
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crag-aster, lava ankle-aster, lava-aster |
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Habit | Plants 5–12(–20) cm (sometimes weakly cespitose, caudices multicipital or with relatively short branches; rhizomes fibrous-rooted, thickened, becoming woody). |
Stems | proximally herbaceous or slightly woody, eglandular. |
Leaves | proximal separated by evident internodes, spatulate, reduced in size distally; mid and distal ovate to oblong or linear, 4–15 mm, margins narrowly whitish hyaline, faces densely scabrous-hispidulous. |
Involucres | 7–10 mm. |
Disc florets | bisexual, fertile; corollas 5.5–7.5 mm. |
Heads | borne singly. |
Cypselae | 5–6 mm, faces eglandular. |
2n | = 18, 36. |
Ionactis alpina |
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Phenology | Flowering May–Jul. |
Habitat | Dry ridges, slopes, and flats, commonly with sagebrush |
Elevation | 1300–2000(–3300) m (4300–6600(–10800) ft) |
Distribution |
CA; ID; MT; NV; OR; UT; WY
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Source | FNA vol. 20, p. 83. |
Parent taxa | Asteraceae > tribe Astereae > Ionactis |
Sibling taxa | |
Synonyms | Chrysopsis alpina, Aster scopulorum |
Name authority | (Nuttall) Greene: Pittonia 3: 245. (1897) |
Web links |