Cirsium eatonii var. eatonii

Endemic
Synonyms: Cirsium eatonii var. harrisonii
Treatment appears in FNA Volume 19. Treatment on page 151. Mentioned on page 127.

Stems ascending to erect, slender, 10–50 cm. Leaf faces glabrous or nearly so. Heads usually short-pedunculate, in erect, short, racemiform or spiciform arrays, rarely openly branched. Involucres 2–2.5 cm, thinly arachnoid-tomentose or glabrate, individual phyllaries evident. Phyllaries sometimes suffused with dark purple; outer with few–many lateral spines; apical spines slender to stout. Corollas purple, 17–26 mm, tubes 5–10 mm, throats 4.5–10.5 mm, lobes 5.5–7.5 mm. Pappi 15–19 mm.


Phenology: Flowering summer (Jul–Sep).
Habitat: Rocky slopes, canyons, pinyon-juniper woodlands to alpine, montane coniferous forests, subalpine forests, alpine slopes
Elevation: 2100–3500 m

Discussion

Variety eatonii is distributed on various of the sky islands in the Basin and Range province of Nevada and Utah. Habitats vary from shaded forest understory sites to forest openings or open exposed sites.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

villous +  and glabrous +
villous +, glabrous +  and arachnoid-tomentose +
short-tailed +
spineless +  and twisted +
dentate +, entire +  and spine-tipped +
usually stiffly ascending +  and spreading +
innermost +
scarious +
not differentiated +
slender;stout +
spiciform +  and racemiform +
indeterminate +  and determinate +
David J. Keil +
(A. Gray) B. L. Robinson +
sessile +, winged-petiolate +  and spiny +
decurrent +
Cnicus eatonii +
compound +  and simple +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
1cm;5cm +
10-nerved or 20-nerved +  and rugose +
spiny-fringed +
tawny +  and white +
? (?) +  and ? (?) +
actinomorphic +
yellow +  and lavender pink or purple +
1.7 cm17 mm <br />0.017 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
compressed +  and ovoid +
fertile +  and bisexual +
Nev. +  and Utah. +
2100–3500 m +
gray-canescent +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky slopes, canyons, pinyon-juniper woodlands to alpine, montane coniferous forests, subalpine forests, alpine slopes +
branched +  and short-pedunculate +
indeterminate +
nodding +  and erect +
each +  and sessile +
suffused with dark purple +  and green +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
glabrate +  and arachnoid-tomentose +
broadly ovoid;campanulate +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
sessile +  and petiolate +
nearly +  and glabrous +
cauline +  and basal +
bristle-tipped +
deltate +, usually narrowly triangular +  and more or less linear +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
3-lobed +, lance-oblong +  and broadly triangular +
2-carpellate +
persistent +
1.5 cm15 mm <br />0.015 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
0 cm0 mm <br />0 m <br /> (14 cm140 mm <br />0.14 m <br />) +
Flowering summer (Jul–Sep). +
spine-tipped +  and plane +
middle +  and outer +
papillate +  and smooth +
sessile +  and winged-petiolate +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
glutinous +
tawny;white +
setiform +  and plumose +
exalbuminous +
subequal +
0.7 cm7 mm <br />0.007 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
branched +, simple +  and sparingly branched +
ascending +  and erect +
1 +  and several +
slender +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
appendaged +  and truncate +
dilated +  and swollen +
enlarged +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Cirsium eatonii var. harrisonii +
Cirsium eatonii var. eatonii +
Cirsium eatonii +
variety +
cylindric +
expanded +
0.45 cm4.5 mm <br />0.0045 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
bristly-dentate to coarsely +
non-septate +  and septate +
arachnoid-tomentose +
slender +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
10 cm100 mm <br />0.1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
tree +, vine +, shrub +  and subshrub +