Cirsium cymosum var. cymosum

Common names: Peregrine thistle
Treatment appears in FNA Volume 19. Treatment on page 136.

Larger heads 20–35 mm diam. Outer phyllaries elongate, often nearly as long as inner; glutinous ridge narrow, weakly developed. 2n = 30, 34.


Phenology: Flowering spring–summer (Apr–Aug).
Habitat: Grassy areas, sagebrush steppe, California woodlands, open coniferous or conifer-hardwood forests, roadsides
Elevation: 200–2000 m

Discussion

Variety cymosum ranges from the Siskiyou Range south through the California North Coast Range to Mount Diablo in the northern South Coast Range, and east into the southern Cascades and the northwestern Great Basin.

Selected References

None.

Lower Taxa

None.

"common" is not a number."fine" is not a number."fine" is not a number.

short-tailed +
spineless +  and twisted +
dentate +, entire +  and spine-tipped +
subappressed +  and ascending or spreading +
innermost +
scarious +
not differentiated +
racemiform +  and corymbiform +
indeterminate +  and determinate +
David J. Keil +
(Greene) J. T. Howell +
winged-petiolate +  and sessile +
auriculate +  and narrowed +
Carduus cymosus +
compound +  and simple +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
pinnatifid;linear-oblong;oblanceolate or elliptic +
2 cm20 mm <br />0.02 m <br /> (?) +
3cm;7cm +
10-nerved or 20-nerved +  and rugose +
ascending;arising +
tawny +  and white +
? (?) +  and ? (?) +
Peregrine thistle +
actinomorphic +
creamy white +  and purplish +
2 cm20 mm <br />0.02 m <br /> (3.1 cm31 mm <br />0.031 m <br />) +
tan +  and dark-brown +
compressed +  and ovoid +
fertile +  and bisexual +
less deeply divided and sometimes spinier +, short-decurrent +, auriculate-clasping +  and sessile +
divided +, unlobed +  and bractlike +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Calif. +, Nev. +  and Oreg. +
200–2000 m +
green;gray +
deciduous +
villous +  and arachnoid-tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grassy areas, sagebrush steppe, California woodlands, open coniferous or conifer-hardwood forests, roadsides +
indeterminate +
each +  and sessile +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
glabrate +  and arachnoid-floccose +
ovoid;hemispheric or campanulate +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
sessile +  and petiolate +
well-developed +
cauline +  and basal +
bristle-tipped +
linear +  and triangular-ovate dentate +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
entire +  and dentate +
usually lobed +  and dissected +
2-carpellate +
persistent +
1.6 cm16 mm <br />0.016 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering spring–summer (Apr–Aug). +
middle +  and outer +
papillate +  and smooth +
sessile +  and winged-petiolate +
Amer. Midl. Naturalist +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
glutinous +
inconspicuous;prominent +
tawny;white +
setiform +  and plumose +
exalbuminous +
subequal +
ascending +  and spreading +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spiny-winged +, simple +  and branched +
appendaged +  and truncate +
dilated +  and swollen +
enlarged +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Cirsium botrys +  and Cirsium triacanthum +
Cirsium cymosum var. cymosum +
Cirsium cymosum +
variety +
cylindric +
expanded +
0.55 cm5.5 mm <br />0.0055 m <br /> (1 cm10 mm <br />0.01 m <br />) +
bristly-dentate to coarsely +
septate +  and non-septate +
arachnoid +  and fine +
perennial +, deciduous +  and biennial +
25 cm250 mm <br />0.25 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
slender +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
perennial +, biennial +  and annual +
5 cm50 mm <br />0.05 m <br /> (400 cm4,000 mm <br />4 m <br />) +
tree +, vine +, shrub +  and subshrub +