Difference between revisions of "Cirsium scariosum var. toiyabense"
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name=Cirsium scariosum var. toiyabense | name=Cirsium scariosum var. toiyabense | ||
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|authority=D. J. Keil | |authority=D. J. Keil | ||
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|tribe=Asteraceae tribe Cardueae | |tribe=Asteraceae tribe Cardueae | ||
|genus=Cirsium | |genus=Cirsium | ||
Latest revision as of 20:48, 5 November 2020
Plants erect, subacaulescent to caulescent, 5–55 cm. Stems usually simple, leafy, glabrous to villous or tomentose with septate trichomes, sometimes thinly arachnoid tomentose. Leaves: blades oblong to oblanceolate or elliptic, pinnately lobed or often unlobed, longer spines less than 1 cm, abaxial faces green and ± glabrous to white-tomentose, adaxial faces green, glabrous or villous with septate trichomes. Heads 1–10+, sessile or short-pedunculate, crowded at stem tips, usually subtended and ± overtopped by distal leaves. Involucres 2–3 cm. Phyllaries: outer and mid lanceolate to ovate, spines slender, 2–4 mm; apices of inner acuminate and entire or abruptly expanded into scarious, erose-toothed appendages. Corollas rose-purple, 23–31 mm, tubes 11–16 mm, throats 4.5–8.5 mm, lobes 5.5–8.5 mm; style tips 3.5–4.5 mm. Cypselae 4–6 mm; pappi 22–25 mm.
Phenology: Flowering spring–summer (May–Aug).
Habitat: Meadows, pastures, springs
Elevation: 1250–2300 m
Distribution
Idaho, Nev., Oreg.
Discussion
Variety toiyabense occurs in the western Basin and Range province from northern Nevada to southeastern Oregon and southwestern Idaho.
Selected References
None.