Difference between revisions of "Chaenactis evermannii"
Leafl. Bot. Observ. Crit. 2: 224. 1912.
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|elevation=1200–3000 m | |elevation=1200–3000 m | ||
|distribution=Idaho. | |distribution=Idaho. | ||
| − | |discussion=<p>Chaenactis evermannii is known from mountains of central Idaho. Reports of it from Washington and California/Nevada (P. Stockwell 1940, some as C. nevadensis var. mainsiana) were based on specimens of C. thompsonii and C. alpigena, respectively; all three species are closely related.</p> | + | |discussion=<p><i>Chaenactis evermannii</i> is known from mountains of central Idaho. Reports of it from Washington and California/<i>Nevada</i> (P. Stockwell 1940, some as <i>C. nevadensis</i> var. mainsiana) were based on specimens of <i>C. thompsonii</i> and <i>C. alpigena</i>, respectively; all three species are closely related.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1912 | |publication year=1912 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_1024.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Revision as of 15:29, 18 September 2019
Perennials, mostly 6–12 cm (cespitose or ± matted); proximal indument thinning with age, grayish, mostly arachnoid-sericeous to thinly lanuginose. Stems mostly 5–20+, ascending to erect. Leaves basal, 1–5 cm; largest blades broadly ± elliptic, ± plane, 1-pinnately lobed; lobes 2–5 pairs, remote, ± plane. Heads 1(–3) per stem. Peduncles mostly ascending to erect, 5–10 cm. Involucres ± obconic. Phyllaries: longest 8–12 mm; outer predominantly closely lanuginose, sparsely, if at all, stipitate-glandular, apices erect, ± rigid. Corollas 5–6.5 mm. Cypselae 5–6.5 mm (eglandular); pappi: longest scales 2.5–4.5 mm (lengths 0.4–0.8 times corollas). 2n = 12.
Phenology: Flowering Jun–Aug.
Habitat: Subalpine, usually decomposing granitic sand or gravel slopes, ridges, scree, talus, openings in or above conifer forests
Elevation: 1200–3000 m
Discussion
Chaenactis evermannii is known from mountains of central Idaho. Reports of it from Washington and California/Nevada (P. Stockwell 1940, some as C. nevadensis var. mainsiana) were based on specimens of C. thompsonii and C. alpigena, respectively; all three species are closely related.
Selected References
None.