Echinops ritro subsp. ruthenicus

(M. Bieberstein) Nyman

Consp. Fl. Eur. 2: 399. 1879.

Common names: Southern globe-thistle
Introduced
Basionym: Echinops ruthenicus M. Bieberstein Fl. Taur.-Caucas. 3: 597. 1819
Treatment appears in FNA Volume 19. Treatment on page 87.

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

V19-33-distribution-map.gif

Introduced; N.Y., Wash., Europe, Asia

Discussion

Subspecies ruthenicus sometimes escapes from cultivation.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

white-tomentose +
expanded +
scarious +
acute +  and triangular +
racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
David J. Keil +
(M. Bieberstein) Nyman +
decurrent +
Echinops ruthenicus +
compound +  and simple +
divided +, dentate +  and pinnately 1-3-pinnately lobed +
elliptic;obovate +
10-nerved or 20-nerved +  and rugose +
laciniate-pinnatifid +
Southern globe-thistle +
actinomorphic +
blue +  and purple +
4-angled +  and cylindric +
fertile +  and bisexual +
N.Y. +, Wash. +, Europe +  and Asia +
0–500 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed sites +
multicellular +
ascending +  and appressed +
in corymbiform , paniculiform or racemiform , arrays +  and singly +
indeterminate +
each +  and sessile +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
spine-tipped +  and spiny-serrate +
linear +  and oblong +
entire +  and dentate +
2-carpellate +
persistent +
Flowering summer (Jun–Aug). +
papillate +  and smooth +
distinct +  and fused +
Consp. Fl. Eur. +
bearing subulate enations +, hairy +  and bristly +
subulate +  and elongate +
1 cm10 mm <br />0.01 m <br /> (?) +
3.5 cm35 mm <br />0.035 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
exalbuminous +
Introduced +
branched +  and simple +
appendaged +  and truncate +
dilated +  and swollen +
enlarged +
Compositae +
Echinops ritro subsp. ruthenicus +
Echinops ritro +
subspecies +
elongate +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
16 +, 15 +, 14 +  and 13 +