Psilostrophe bakeri

Greene

Pl. Baker. 3: 29. 1901.

Endemic
Treatment appears in FNA Volume 21. Treatment on page 455. Mentioned on page 454.

Biennials or perennials (rarely flowering first-year), 5–12 (–20+) cm. Stems arachno-villous (gray to gray-green). Heads in ± loose, corymbiform arrays. Peduncles 15–35 (–50) mm. Involucres 7–9 (–12) mm. Rays 4–5 (–8); laminae 8–15+ mm, spreading in fruit. Disc-florets (10–) 12–15 (–20). Cypselae usually glabrous, sometimes glanddotted; pappi of 4–5 ± oblong scales 1.5–2 mm. 2n = 32.


Phenology: Flowering May–Jun.
Habitat: Rocky, often alkaline, slopes, knolls
Elevation: 1300–2000 m

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Psilostrophe bakeri"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
Greene +
decurrent +
compound +  and simple +
spatulate;oblanceolate or linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
yellow +  and orange +
obcompressed +, cylindric +  and clavate or obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Colo. +  and Idaho. +
1300–2000 m +
strigillose +  and arachno-villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky, often alkaline, slopes, knolls +
glomerulate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
cylindric;campanulate or obconic +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
sessile +  and petiolate +
cauline +, all +  and basal +
deltate +
connate +  and distinct +
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
unequal +  and subequal +
2-carpellate +
persistent +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Flowering May–Jun. +
5 +  and 12 +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;flat +
4 +  and 5 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
exalbuminous +
erect +  and spreading +
arachno-villous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Psilostrophe bakeri +
Psilostrophe +
species +
cylindric +
dilated +
toothed +  and entire +
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +
perennial +  and biennial +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
shrub +  and subshrub +