Difference between revisions of "Silphium mohrii"
Bull. Torrey Bot. Club 24: 493, plate 315. 1897.
Common names: Shaggy rosinweed
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name=Silphium mohrii | name=Silphium mohrii | ||
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|publication year=1897 | |publication year=1897 | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Revision as of 20:35, 16 December 2019
Plants caulescent, 40–160 cm; fibrous rooted. Stems terete, shaggy-hispid. Leaves: basal persistent, petiolate; cauline usually alternate, sometimes opposite, petiolate or sessile; blades lanceolate to narrowly ovate, 1.5–26 × 0.5–14 cm, bases attenuate to acute, margins coarsely toothed or entire, apices acuminate, faces shaggy-hispid. Phyllaries 14–19 in 2–3 series, outer appressed, apices acuminate to acute, abaxial faces shaggy-hispid. Ray florets 10–20; corollas pale yellow. Disc florets 40–85; corollas pale yellow. Cypselae 6–10 × 4–7 mm; pappi 1–2 mm.
Phenology: Flowering late summer–early fall.
Habitat: Prairies, clearings, fence rows, sandy soils
Elevation: 100–400 m
Distribution
Ala., Ga., Tenn.
Discussion
Selected References
None.
Lower Taxa
None.