Crepis intermedia

A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1(2): 432. 1884.

Common names: Limestone or small-flower hawksbeard
Endemic
Synonyms: Crepis acuminata var. intermedia (A. Gray) Jepson
Treatment appears in FNA Volume 19. Treatment on page 229. Mentioned on page 224, 225, 233, 234.

Perennials, 25–60 cm (taproots stout or slender, caudices swollen, simple or branched, covered with brown leaf-bases). Stems 1–2, erect, branched (proximal branches elongate, branched distally), ± tomentose-canescent. Leaves basal and cauline; petiolate (petiole bases clasping); blades elliptic-lanceolate, 10–40 × 2–9 cm, margins pinnately lobed (lobes remote or close, entire or dentate), apices acute or acuminate, faces densely or sparsely gray-tomentose. Heads (10–) 20–60, in ± flat-topped, compound, corymbiform or paniculiform arrays. Calyculi of 6–8, narrowly triangular, tomentulose bractlets 2–4 mm. Involucres narrowly cylindric, 10–16 × 3–5 mm. Phyllaries 7–10, (medially green) lanceolate, 10–13 mm (margins scarious), apices acute, abaxial faces ± tomentulose, sometimes with greenish eglandular setae, adaxial with fine hairs. Florets 7–12; corollas yellow, 14–30 mm. Cypselae yellow or golden brown, subcylindric, 6–9 mm, tapered distally, ribs 10–12 (smooth); pappi dusky white, 7–10 mm. 2n = 33, 44, 55, 88.


Phenology: Flowering May–Jul.
Habitat: Open rocky ridges, dry slopes, open forests
Elevation: 800–3900 m

Distribution

V19-287-distribution-map.gif

Alta., B.C., Sask., Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.

Discussion

Crepis intermedia is a somewhat unnatural group of polyploid apomicts that combines the features of multiple species, including C. acuminata, C. pleurocarpa, C. modocensis, and C. atribarba (E. B. Babcock 1947). The plants are usually over 25 cm, with leaves deeply pinnately lobed (gray-tomentose, cleft about halfway to midribs), with acuminate apices, and more or less flat-topped arrays of heads. The leaves vary greatly in size and lobing and are always gray-tomentose. The number of heads per plant is usually more than 20.

Selected References

None.

Lower Taxa

None.

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

... more about "Crepis intermedia"
88 +, 55 +, 44 +  and 33 +
with appressed hairs +  and glabrous +
scarious +
ovate +  and lanceolate +
paniculiform +, corymbiform +  and compound +
indeterminate +  and determinate +
flat-topped +
David J. Bogler +
A. Gray in A. Gray et al. +
runcinate +, lyrate +, lanceolate +  and linear or spatulate +
decurrent +
compound +  and simple +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
elliptic-lanceolate +
2cm;9cm +
tuberculate +, rugose +, muricate +  and smooth +
triangular +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
filiform +
lobing +, entire +  and lobed +
Limestone or small-flower hawksbeard +
zygomorphic +, actinomorphic +  and (3-)5-merous +
1.4 cm14 mm <br />0.014 m <br /> (3 cm30 mm <br />0.03 m <br />) +
golden brown +  and yellow +
tapered +  and subcylindric +
Alta. +, B.C. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
800–3900 m +
gray-tomentose +
winged +  and beaked +
dispersed +
Open rocky ridges, dry slopes, open forests +
indeterminate +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cauline +  and basal +
toothed +
dentate +  and entire +
green +  and yellowish +
2-carpellate +
dusky white +
persistent +
connate +  and distinct +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering May–Jul. +
connate +  and distinct +
7 +  and 10 +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
in A. Gray et al., Syn. Fl. N. Amer. +
hairy +  and glabrous +
convex;flat +
10 +  and 12 +
spiculate-roughened +
exalbuminous +
1 +  and 2 +
appendaged +  and truncate +
papillate +
Crepis acuminata var. intermedia +
Crepis intermedia +
species +
taprooted +  and rhizomatous +
25 cm250 mm <br />0.25 m <br /> (60 cm600 mm <br />0.6 m <br />) +
shrub +  and subshrub +
11 +, 6 +, 5 +, 4 +  and 3 +