Cirsium fontinale var. obispoense

J. T. Howell

Leafl. W. Bot. 2: 71. 1938.

Common names: Chorro Creek bog thistle
EndemicConservation concern
Treatment appears in FNA Volume 19. Treatment on page 162. Mentioned on page 161.

Basal leaves: longer spines 5–9 mm; distal faces more densely glandular than tomentose. Cauline leaves: longer spines 4–7 mm. Distalmost stem bracts tightly subtending heads or separated from them. Phyllaries 70–120, 28–38 of them reflexed; apical spines 2–3 mm; marginal spines usually absent. Cypselae 3.8–4 mm. 2n = 34.


Phenology: Flowering winter–summer (Jan–Sep).
Habitat: Serpentine seeps, coastal live oak woodlands, grasslands, riparian areas
Elevation: 40–300 m

Discussion

Of conservation concern.

Variety obispoense is known only from the southern Santa Lucia and San Luis ranges of San Luis Obispo County.

Selected References

None.

Lower Taxa

None.

"fine" is not a number."less" is not a number.

short-tailed +
spineless +  and twisted +
dentate +, entire +  and spine-tipped +
spreading +  and recurved or reflexed +
innermost +
puberulent +
scarious +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
David J. Keil +
J. T. Howell +
auriculate-decurrent +
Cnicus fontinalis +
compound +  and simple +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
strongly undulate;shallowly deeply pinnatifid +
5cm;16cm +
entire;erose +
10-nerved or 20-nerved +  and rugose +
reduced +
several;many +
tawny +  and white +
? (?) +  and ? (?) +
Chorro Creek bog thistle +
actinomorphic +
white +  and pinkish or lavender +
1.45 cm14.5 mm <br />0.0145 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
compressed +  and ovoid +
fertile +  and bisexual +
more densely glandular than tomentose +
40–300 m +
gray-canescent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Serpentine seeps, coastal live oak woodlands, grasslands, riparian areas +
indeterminate +
each +  and sessile +
reflexed +  and erect +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
puberulent +  and glabrous +
campanulate;hemispheric +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
bristle-tipped +
with triangular secondary lobes +  and toothed +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 0.7 cm7 mm <br />0.007 m <br /> (?) +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
entire +  and dentate +
usually lobed +  and dissected +
2-carpellate +
persistent +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0 cm0 mm <br />0 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering winter–summer (Jan–Sep). +
middle +  and outer +
28 +  and 38 +
weakly to strongly +
papillate +  and smooth +
Leafl. W. Bot. +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
glutinous +
tawny;white +
setiform +  and plumose +
exalbuminous +
subequal +
Endemic +  and Conservation concern +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spiny-winged +, simple +  and branched +
1 +  and several +
appendaged +  and truncate +
dilated +  and swollen +
enlarged +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Compositae +
Cirsium fontinale var. obispoense +
Cirsium fontinale +
variety +
cylindric +
expanded +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
bristly-dentate to coarsely +
non-septate +  and multicellular +
slender +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
50 cm500 mm <br />0.5 m <br /> (220 cm2,200 mm <br />2.2 m <br />) +
tree +, vine +, shrub +  and subshrub +
spiny-margined +