Difference between revisions of "Erigeron davisii"
Sida 21: 22. 2004.
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|name=Erigeron engelmannii subsp. davisii | |name=Erigeron engelmannii subsp. davisii | ||
|authority=Cronquist | |authority=Cronquist | ||
| + | |rank=subspecies | ||
|publication_title=Leafl. W. Bot. | |publication_title=Leafl. W. Bot. | ||
|publication_place=3: 167. 1942 (as engelmanni) | |publication_place=3: 167. 1942 (as engelmanni) | ||
| Line 17: | Line 18: | ||
|name=Erigeron engelmannii var. davisii | |name=Erigeron engelmannii var. davisii | ||
|authority=(Cronquist) Cronquist | |authority=(Cronquist) Cronquist | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron davisii | |hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron davisii | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Erigeron davisii | name=Erigeron davisii | ||
| − | |||
|authority=(Cronquist) G. L. Nesom | |authority=(Cronquist) G. L. Nesom | ||
|rank=species | |rank=species | ||
| Line 56: | Line 57: | ||
|publication year=2004 | |publication year=2004 | ||
|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/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_593.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron | ||
Revision as of 19:29, 16 December 2019
Perennials, 10–30 cm; taprooted, caudices simple or with relatively short, thick branches. Stems erect, hirsuto-villous to loosely strigose (hairs relatively translucent and vitreous, unequal in lengths, 0.1–1 mm), sometimes sparsely minutely glandular. Leaves mostly basal (persistent; petioles prominently ciliate, hairs spreading, thick-based), eglandular; blades linear to narrowly oblanceolate, 20–100 × 1–3.5 mm, abruptly reduced distally, margins entire, faces strigose to strigoso-hirsute, eglandular. Heads 1. Involucres 5–8 × 10–15 mm. Phyllaries in 2–3 series, loosely hirsute to hirsuto-villous, sometimes sparsely minutely glandular. Ray florets 50–80; corollas usually white, 8–14 mm, laminae (1.2–1.8 mm wide) coiling. Disc corollas 3.1–4 mm (glabrate, throats not indurate or inflated). Cypselae (obovoid) 2.1–2.5 mm, 2-nerved, faces sparsely to moderately strigoso-villous; pappi: outer of setae, inner of 14–20 bristles.
Phenology: Flowering (Apr–)May–Jul.
Habitat: Bare, rocky ridges and slopes, basalt outcrops, sparsely vegetated woodland openings or edges, commonly with grasses
Elevation: 1200–1800 m
Discussion
Of conservation concern.
Selected References
None.