Difference between revisions of "Laënnecia schiedeana"
Phytologia 68: 224. 1990.
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|name=Erigeron schiedeanus | |name=Erigeron schiedeanus | ||
|authority=Lessing | |authority=Lessing | ||
+ | |rank=species | ||
|publication_title=Linnaea | |publication_title=Linnaea | ||
|publication_place=5: 145. 1830 (as schiedanum) | |publication_place=5: 145. 1830 (as schiedanum) | ||
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|name=Conyza schiedeana | |name=Conyza schiedeana | ||
|authority=(Lessing) Cronquist | |authority=(Lessing) Cronquist | ||
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Laënnecia;Laënnecia schiedeana | |hierarchy=Asteraceae;Asteraceae tribe Astereae;Laënnecia;Laënnecia schiedeana | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Laënnecia schiedeana | name=Laënnecia schiedeana | ||
− | |||
|authority=schiedeana (Lessing) G. L. Nesom | |authority=schiedeana (Lessing) G. L. Nesom | ||
|rank=species | |rank=species | ||
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|publication year=1990 | |publication year=1990 | ||
|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_41.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Laënnecia | |genus=Laënnecia |
Revision as of 20:28, 16 December 2019
Annuals, 10–50(–100) cm. Leaf blades: bases ± clasping, faces usually sparsely and finely tomentose (hairs coarse, erect, multicellular) and stipitate- or sessile-glandular; proximal spatulate to oblong, 20–50+ × 5–15 mm, usually entire, sometimes 2–6-lobed or -toothed distally; distal narrowly oblong to linear, 10–20 × 1–5 mm, mostly entire. Heads borne in (narrowly cylindric) racemiform-paniculiform arrays (proximal in axils of distal leaves). Involucres 4–6 mm. Receptacles 3–4 mm diam. Pistillate florets 60–100+; corollas: ± equaling or surpassing styles, laminae 0.5–1+ mm. Disc florets 5–8+. Cypselae reddish brown, 1–1.5 mm, glabrous or sparsely strigillose (hairs 0.05–0.1 mm), sometimes glandular near apices; pappi ± persistent, of 12–20 white to tawny bristles in 1 series, 3.5–4 mm. 2n = 18.
Phenology: Flowering late summer–early fall.
Habitat: Sandy roadsides, stream banks, openings in pine forests
Elevation: 2000–2900 m
Distribution
Ariz., Colo., N.Mex., Mexico.
Discussion
Selected References
None.