Difference between revisions of "Echinops ritro subsp. ruthenicus"
Consp. Fl. Eur. 2: 399. 1879.
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Revision as of 18:36, 24 September 2019
Plants 100–150 cm. Stems simple or distally ± branched, ± white-tomentose, proximally sometimes ± glabrate. Leaves: basal and proximal cauline winged-petiolate, mid cauline ± clasping; blades elliptic to obovate, margins 2-pinnately divided nearly to midvein, lobes linear to oblong, spiny-serrate, spine-tipped, abaxial faces white-tomentose, adaxial faces green, sparsely viscid-glandular; distal smaller, less divided. Secondary heads 3.5–4.5 cm diam. Involucres 15–20 mm. Inner phyllaries lavender, apices attenuate, serrulate, scabrous, not glandular. Corollas blue to purple (white). Cypselae ca. 6 mm; pappi of ± connate, minutely barbed scales ca. 1 mm. 2n = 32 (Greece).
Phenology: Flowering summer (Jun–Aug).
Habitat: Disturbed sites
Elevation: 0–500 m
Distribution
N.Y., Wash., Europe, Asia.
Discussion
Subspecies ruthenicus sometimes escapes from cultivation.
Selected References
None.