Crepis elegans

Hooker

Fl. Bor.-Amer. 1: 297. 1833.

Common names: Elegant hawksbeard
Endemic
Treatment appears in FNA Volume 19. Treatment on page 228. Mentioned on page 224, 231.

Perennials, 6–30 cm (taproots deep, caudices stout). Stems 5–20, erect or ascending (often reddish-brown, in loose clumps), ± dichotomously branched distally, glabrous. Leaves basal and cauline; petiolate (petiole bases clasping); blades spatulate or elliptic to ovate, 1–4 × 0.5–1.5 cm, margins coarsely dentate or entire, apices acute, faces glabrous. Heads 10–100+, in dense paniculiform arrays. Calyculi of 7–8 (blackish green), ovate, glabrous bractlets 1–2 mm. Involucres cylindric, 8–10 × 2–3 mm. Phyllaries 8–10, (blackish green) oblong, 8–10 mm, (margins scarious) apices acute or obtuse, faces glabrous. Florets 6–10; corollas yellow, 6–8 mm. Cypselae golden brown, fusiform (subterete or flattened), 4–5 mm, beaked (beaks delicate), ribs 10 (narrow, spiculate-roughened); pappi white, 4–5 mm. 2n = 14.


Phenology: Flowering Jun–Sep.
Habitat: Stream banks, gravelly flats, sandbars, roadsides
Elevation: 1300–2000 m

Distribution

V19-285-distribution-map.gif

Alta., B.C., N.W.T., Ont., Yukon, Alaska, Mont., Wyo.

Discussion

Crepis elegans is recognized by its loose, cespitose habit, relatively small spatulate leaves, blackish green, glabrous phyllaries, and beaked cypselae. It is thought to be closely related to C. nana, and, possibly, derived from it (E. B. Babcock 1947).

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Crepis elegans"
stipitate-glandular +, setose +, tomentose +  and glabrous +
with appressed hairs +  and glabrous +
scarious +
ovate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
David J. Bogler +
Hooker +
runcinate +, lyrate +, lanceolate +  and linear or spatulate +
decurrent +
compound +  and simple +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
elliptic;ovate +
0.5cm;1.5cm +
tuberculate +, rugose +, muricate +  and smooth +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
filiform +
lobing +, entire +  and lobed +
Elegant hawksbeard +
zygomorphic +, actinomorphic +  and (3-)5-merous +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
golden brown +
Alta. +, B.C. +, N.W.T. +, Ont. +, Yukon +, Alaska +, Mont. +  and Wyo. +
1300–2000 m +
winged +  and beaked +
dispersed +
Stream banks, gravelly flats, sandbars, roadsides +
indeterminate +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
cauline +  and basal +
toothed +
entire +  and dentate +
green +  and yellowish +
lobed +, toothed +  and serrate +
2-carpellate +
persistent +
connate +  and distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Jun–Sep. +
connate +  and distinct +
8 +  and 10 +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fl. Bor.-Amer. +
hairy +  and glabrous +
convex;flat +
spiculate-roughened +
exalbuminous +
ascending +  and erect +
5 +  and 20 +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Crepis elegans +
species +
taprooted +  and rhizomatous +
6 cm60 mm <br />0.06 m <br /> (30 cm300 mm <br />0.3 m <br />) +
shrub +  and subshrub +
11 +, 6 +, 5 +, 4 +  and 3 +