Cirsium fontinale var. campylon

(H. Sharsmith) Pilz ex D. J. Keil & C. E. Turner

Phytologia 73: 313. 1992.

Common names: Mt. Hamilton thistle
EndemicConservation concern
Basionym: Cirsium campylon H. Sharsmith Madroño 5: 85, fig. 1. 1939
Treatment appears in FNA Volume 19. Treatment on page 162. Mentioned on page 161.

Basal leaves: longer spines 4–15 mm, distal faces equally glandular and tomentose. Cauline leaves: longer spines 10–18 mm. Distalmost stem bracts typically separated from heads. Phyllaries 65–85, 25–35 of them reflexed; apical spines 3–6 mm; marginal spines usually absent. Cypselae 3.4–4.1 mm. 2n = 34.


Phenology: Flowering spring–summer (Apr–Aug).
Habitat: Serpentine seeps in areas of chaparral, valley grasslands, foothill woodlands
Elevation: 300–800 m

Discussion

Of conservation concern.

Variety campylon is endemic to the Mt. Hamilton Range in Alameda, Santa Clara, and Stanislaus counties.

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 +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
David J. Keil +
(H. Sharsmith) Pilz ex D. J. Keil & C. E. Turner +
auriculate-decurrent +
Cirsium campylon +
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 ? (?) +
Mt. Hamilton 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 +
300–800 m +
gray-canescent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Serpentine seeps in areas of chaparral, valley grasslands, foothill woodlands +
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 +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.8 cm18 mm <br />0.018 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 spring–summer (Apr–Aug). +
middle +  and outer +
25 +  and 35 +
weakly to strongly +
papillate +  and smooth +
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. campylon +
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 +