Cirsium remotifolium var. rivulare

Jepson

Man. Fl. Pl. Calif., 1164. 1925.

Common names: Klamath thistle
Endemic
Synonyms: Cirsium acanthodontum S. F. Blake Cirsium oreganum Piper
Treatment appears in FNA Volume 19. Treatment on page 131. Mentioned on page 130, 147.

Phyllaries imbricate or subequal, linear, margins and/or apices regularly spinulose-serrulate, sometimes weakly expanded and scarious. Corollas usually purple (infrequently cream-colored), 20–25 mm, tubes 8–12 mm, throats 5–6 mm, lobes 6–8 mm. 2n = 32.


Phenology: Flowering late spring–summer (May–Aug).
Habitat: Sea bluffs, river valleys, meadows, grasslands, open coniferous or mixed coniferous-hardwood forests
Elevation: 10–1200 m

Discussion

Plants of var. rivulare occur in the western Klamath Mountains of southwestern Oregon and northwestern California and the adjacent coastal plain. Although these plants are usually slender and erect with well separated leaves, they assume a compact growth form in maritime habitats.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

green +  and gray +
villous +, glabrate +  and arachnoid-tomentose +
short-tailed +
spineless +  and twisted +
spinulose-serrulate +
erect +  and spreading +
innermost +
expanded +
scarious +
not +  and differentiated +
paniculiform +, racemiform +  and corymbiform +
indeterminate +  and determinate +
David J. Keil +
Jepson +
winged-petiolate +  and sessile +
lacerate-dentate +  and entire +
auriculate-clasping +
auriculate +  and narrowed +
expanded +
Carduus remotifolius +
compound +  and simple +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
dentate or;shallowly deeply pinnatifid +
1cm;15cm +
10-nerved or 20-nerved +  and rugose +
ascending;arising +
slender +
tawny +  and white +
Klamath thistle +
actinomorphic +
creamy white +  and purple +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
tan +  and dark-brown +
compressed +  and ovoid +
fertile +  and bisexual +
sometimes spinier +
less deeply divided +, unlobed +  and bractlike +
Calif. +  and Oreg. +
10–1200 m +
gray-canescent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sea bluffs, river valleys, meadows, grasslands, open coniferous or mixed coniferous-hardwood forests +
indeterminate +
each +  and sessile +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
glabrous +  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 />) +
sessile +  and petiolate +
cauline +  and basal +
bristle-tipped +
linear +  and triangular-ovate dentate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
lacerate-dentate +, entire +  and spinulose-dentate +
usually lobed +  and dissected +
2-carpellate +
persistent +
1.3 cm13 mm <br />0.013 m <br /> (2.3 cm23 mm <br />0.023 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 late spring–summer (May–Aug). +
middle +  and outer +
papillate +  and smooth +
sessile +  and winged-petiolate +
Man. Fl. Pl. Calif., +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
glutinous +
inconspicuous +
tawny;white +
setiform +  and plumose +
exalbuminous +
subequal +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 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 acanthodontum +  and Cirsium oreganum +
Cirsium remotifolium var. rivulare +
Cirsium remotifolium +
variety +
cylindric +
expanded +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
bristly-dentate to coarsely +
slender +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
20 cm200 mm <br />0.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
tree +, vine +, shrub +  and subshrub +