Cirsium douglasii var. douglasii

Endemic
Treatment appears in FNA Volume 19. Treatment on page 133.
Revision as of 18:56, 29 July 2020 by imported>Volume Importer
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Plants to 150 cm. Cauline leaves usually deeply lobed, spines usually 7–20 mm. Heads mostly 2.5–3.5 cm. 2n = 34.


Phenology: Flowering summer (Jun–Aug).
Habitat: Springs, seeps, streamsides, coastal bluffs, coniferous and hardwood forests, often on serpentine
Elevation: 10–1200 m

Discussion

Variety douglasii grows in the Coast Ranges from Humboldt to Monterey and San Benito counties.

Selected References

None.

Lower Taxa

None.

"fine" is not a number."[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

short-tailed +
spineless +  and twisted +
dentate +, entire +  and spine-tipped +
erect +  and spreading +
innermost +
rounded;acute +
scarious +
not differentiated +
paniculiform +
indeterminate +  and determinate +
David J. Keil +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
auriculate-clasping +
decurrent +
Asteraceae tribe Cynareae +
compound +  and simple +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +
unlobed or;shallowly deeply pinnatifid +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
10-nerved or 20-nerved +  and rugose +
ascending;spreading +
tawny +  and white +
actinomorphic +
1.8 cm18 mm <br />0.018 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
dark-brown +  and black +
compressed +  and ovoid +
fertile +  and bisexual +
10–1200 m +
glabrate +  and gray-tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Springs, seeps, streamsides, coastal bluffs, coniferous and hardwood forests, often on serpentine +
indeterminate +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
each +  and sessile +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
glabrate +  and arachnoid +
ovoid;hemispheric +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
bristle-tipped +
ascending;spreading +
lobed +, dentate +, lanceolate +  and ovate-triangular +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (3 cm30 mm <br />0.03 m <br />) +
entire +  and dentate +
usually lobed +  and dissected +
2-carpellate +
persistent +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
dark purple +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0 cm0 mm <br />0 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering summer (Jun–Aug). +
middle +  and outer +
weakly to strongly +
papillate +  and smooth +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
linear to elliptic +
glutinous +
tawny;white +
setiform +  and plumose +
exalbuminous +
subequal +
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
spiny-winged +, simple +  and branched +
ascending +  and erect +
gray-tomentose +
1 +  and several +
appendaged +  and truncate +
dilated +  and swollen +
enlarged +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Compositae +
Cirsium douglasii var. douglasii +
Cirsium douglasii +
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 /> (0.9 cm9 mm <br />0.009 m <br />) +
perennial +, short-lived +  and biennial +
60 cm600 mm <br />0.6 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +