Difference between revisions of "Laënnecia sophiifolia"
Phytologia 68: 225. 1990.
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|accepted_name=Laënnecia sophiifolia | |accepted_name=Laënnecia sophiifolia | ||
| − | |accepted_authority= | + | |accepted_authority=(Kunth) G. L. Nesom |
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name=Laënnecia sophiifolia | name=Laënnecia sophiifolia | ||
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|rank=species | |rank=species | ||
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|publication year=1990 | |publication year=1990 | ||
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|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Laënnecia | |genus=Laënnecia | ||
Latest revision as of 19:15, 6 December 2021
Annuals, 10–50(–150+) cm (sometimes branched from bases). Leaf blades: bases obscurely, if at all, clasping, faces sparsely hirtellous to villous (at least on margins, hairs multicellular) and stipitate- to sessile-glandular; proximal ovate to spatulate, 20–50+ × 10–20+ mm, mostly 1–2-pinnately lobed (lobes oblong-linear to filiform); distal similar, pinnately lobed or entire (then linear to filiform). Heads in racemiform or paniculiform arrays (on main and lateral stems). Involucres 2.5–3.5 mm. Receptacles 1.5–2 mm diam. Pistillate florets 20–40+; corollas: lengths ± 1/2 styles, laminae 0. Disc florets 2–6. Cypselae pale pinkish tan, 0.6–0.8 mm, glabrous or sparsely strigillose (hairs 0.05–0.1 mm), sometimes glandular near apices; pappi fragile or readily falling, of 9–12(–20) white to tawny bristles in 1 series, 2–3 mm. 2n = 18.
Phenology: Flowering late summer–early fall.
Habitat: Disturbed sites, among igneous rocks
Elevation: 1300–2100 m
Distribution
Ariz., N.Mex., Tex., Mexico.
Discussion
Selected References
None.