Crepis rubra

Linnaeus

Sp. Pl. 2: 806. 1753.

Common names: Red hawksbeard
Introduced
Treatment appears in FNA Volume 19. Treatment on page 234. Mentioned on page 223.

Annuals, 4–40 cm (taproots shallow). Stems 1–8, decumbent to ascending, scapiform, branched proximally, glabrate to tomentulose. Leaves basal and cauline; petiolate; blades (at least basal) oblanceolate or runcinate, 2–15 × 0.5–3 cm, (bases attenuate) margins pinnately lobed to dentate, apices acute, faces hirsute. Heads 1 (–2), usually borne singly (peduncles scapiform). Calyculi of 8–10, ovatelanceolate, glabrous bractlets 4–8 mm. Involucres cylindro-campanulate, 11–15 × 4–7 mm. Phyllaries 8–14, (dark medially), lanceolate, 10–12 mm, (margins yellowish) apices acute, abaxial faces sparsely to densely stipitate-glandular, adaxial with fine, appressed hairs. Florets 40–100; corollas pink or white, 16–17 mm. Cypselae dimorphic, dark-brown, fusiform: outer curved, 8–9 mm, coarsely beaked, inner straight, 12–21 mm, finely beaked, ribs 10 (sharply spiculate); pappi yellowish white to dusky white (fine), 5–8 mm. 2n = 10.


Phenology: Flowering Apr–Jun.
Habitat: Rocky fields, waste places
Elevation: 200–300 m

Distribution

V19-304-distribution-map.gif

Introduced; Calif., Eurasia, also widely

Discussion

Native to the Mediterranean region and Asia Minor, Crepis rubra is widely cultivated throughout the world and occasionally escapes. It can be easily recognized by its annual habit, scapiform stems, relatively large, often single heads, and pink or white corollas. Wild plants are shorter than cultivated ones.

Selected References

None.

Lower Taxa

None.

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

... more about "Crepis rubra"
stipitate-glandular +
with appressed hairs +  and glabrous +
scarious +
ovate +  and lanceolate +
paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
David J. Bogler +
Linnaeus +
runcinate +, lyrate +, lanceolate +  and linear or spatulate +
decurrent +
compound +  and simple +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
runcinate;oblanceolate +
0.5cm;3cm +
tuberculate +, rugose +, muricate +  and smooth +
ovatelanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
filiform +
lobing +, entire +  and lobed +
Red hawksbeard +
zygomorphic +, actinomorphic +  and (3-)5-merous +
white +  and pink +
1.6 cm16 mm <br />0.016 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Calif. +, Eurasia +  and also widely +
200–300 m +
winged +  and beaked +
dispersed +
Rocky fields, waste places +
indeterminate +
each +  and sessile +
1.2 cm12 mm <br />0.012 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
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 /> (1.5 cm15 mm <br />0.015 m <br />) +
cylindro-campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
cauline +  and basal +
toothed +
dentate +  and entire +
green +  and yellowish +
pinnately lobed +  and dentate +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
2-carpellate +
yellowish white +  and dusky white +
persistent +
connate +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering Apr–Jun. +
connate +  and distinct +
8 +  and 14 +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hairy +  and glabrous +
convex;flat +
spiculate-roughened +
exalbuminous +
Introduced +
decumbent +  and ascending +
1 +  and 8 +
scapiform +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Crepis rubra +
species +
taprooted +  and rhizomatous +
4 cm40 mm <br />0.04 m <br /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +
11 +, 6 +, 5 +, 4 +  and 3 +