Crepis bakeri subsp. idahoensis

Babcock & Stebbins

Publ. Carnegie Inst. Wash. 504: 141, fig. 22o–q. 1938.

Common names: Idaho hawksbeard
EndemicConservation concern
Treatment appears in FNA Volume 19. Treatment on page 226.

Plants 25–30 cm. Leaves 15–18 × 5–5.5 cm, shallowly lobed, lobes deltate, sharply dentate, faces glabrate. Heads 7–22. Calyculi: bractlets deltate (longest much shorter than phyllaries). Involucres narrowly cylindric or turbinate, 18–21 mm in fruit. Cypselae reddish-brown, 8 mm, apices narrow, not strongly tapered; pappi 12–13 mm. 2n = 55.


Phenology: Flowering May–Jul.
Habitat: Dry open places
Elevation: 400–2200 m

Discussion

Of conservation concern.

Plants of subsp. idahoensis are generally larger and more robust than the other subspecies, with more heads per stem. They are possibly allopolyploids, with Crepis occidentalis or C. monticola in their lineage (E. B. Babcock 1947).

Selected References

None.

Lower Taxa

None.

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

stipitate-glandular +, setose +, tomentose +  and glabrous +
with fine hairs +  and glabrous +
tapered +
scarious +
ovate +  and lanceolate +
indeterminate +  and determinate +
David J. Bogler +
Babcock & Stebbins +
runcinate +, lyrate +, lanceolate +  and linear or spatulate +
decurrent +
compound +  and simple +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
runcinate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
tuberculate +, rugose +, muricate +  and smooth +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
filiform +
lobing +, entire +  and lobed +
Idaho hawksbeard +
zygomorphic +, actinomorphic +  and (3-)5-merous +
1.6 cm16 mm <br />0.016 m <br /> (2 cm20 mm <br />0.02 m <br />) +
reddish-brown +
Calif. +  and Idaho. +
400–2200 m +
winged +  and beaked +
dispersed +
Dry open places +
indeterminate +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
turbinate;cylindric +
1.8 cm18 mm <br />0.018 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
cauline +  and basal +
5 cm50 mm <br />0.05 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
deltate +
dentate +  and entire +
green +  and yellowish +
2-carpellate +
persistent +
connate +  and distinct +
1.2 cm12 mm <br />0.012 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering May–Jul. +
connate +  and distinct +
10 +  and 14 +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Publ. Carnegie Inst. Wash. +
hairy +  and glabrous +
convex;flat +
10 +  and 13 +
spiculate-roughened +
exalbuminous +
Endemic +  and Conservation concern +
stipitate-glandular +  and tomentose +
1 +  and 3 +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Crepis bakeri subsp. idahoensis +
Crepis bakeri +
subspecies +
taprooted +  and rhizomatous +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
11 +, 6 +, 5 +, 4 +  and 3 +