Hieracium aurantiacum

Linnaeus

Sp. Pl. 2: 801. 1753.

Common names: Orange hawkweed épervière orangée
Introduced
Synonyms: Pilosella aurantiaca (Linnaeus) F. W. Schultz & Schultz-Bipontinus
Treatment appears in FNA Volume 19. Treatment on page 283. Mentioned on page 279.

Plants 15–35 (–60+) cm. Stems proximally piloso-hirsute (hairs 2–4+ mm), distally piloso-hirsute (hairs 1–4 mm) and stipitate-glandular. Leaves: basal 3–8+, cauline 0 (–1+); blades spatulate to oblanceolate, 45–70 (–160+) × 10–35 mm, lengths 3–5+ times widths, bases cuneate, margins entire, apices acute, faces piloso-hirsute (hairs 1–2+ mm) and stellate-pubescent. Heads 3–7 (–12+) in ± umbelliform arrays. Peduncles stellate-pubescent and stipitate-glandular. Calyculi: bractlets 5–8+. Involucres campanulate, 6–8 mm. Phyllaries 13–30+, apices acuminate, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular. Florets 25–120+; corollas orange (drying scarlet to purplish), 10–14+ mm. Cypselae columnar, 1.2–1.5 (–2) mm; pappi of 25–30+, white bristles in 1 series, 3.5–4 mm.


Phenology: Flowering (May–)Jun–Aug(–Sep).
Habitat: Disturbed sites (fields, lawns, roadsides), bogs, clays, sands
Elevation: 10–300(–1000+) m

Distribution

V19-389-distribution-map.gif

Introduced; St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Sask., Alaska, Ark., Calif., Colo., Conn., Fla., Ga., Idaho, Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mont., N.H., N.J., N.Y., N.C., Ohio, Oreg., Pa., R.I., S.Dak., Tenn., Vt., Va., Wash., W.Va., Wis., Wyo., Europe

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Hieracium aurantiacum"
stipitate-glandular +, stellate-pubescent +  and piloso-hirsute +
acuminate;acute +
scarious +
ovate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
Linnaeus +
cuneate +
compound +  and simple +
7 cm70 mm <br />0.07 m <br /> (16 cm160 mm <br />0.16 m <br />) +
4.5 cm45 mm <br />0.045 m <br /> (7 cm70 mm <br />0.07 m <br />) +
spatulate;oblanceolate +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
tuberculate +, rugose +, muricate +  and smooth +
deltate;lanceolate or linear +
filiform +
Orange hawkweed +  and épervière orangée +
zygomorphic +, actinomorphic +  and (3-)5-merous +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
black +  and redbrown +
St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Alaska +, Ark. +, Calif. +, Colo. +, Conn. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.Dak. +, Tenn. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +  and Europe +
10–300(–1000+) m +
stellate-pubescent +  and piloso-hirsute +
winged +  and beaked +
dispersed +
Disturbed sites (fields, lawns, roadsides), bogs, clays, sands +
in corymbiform , paniculiform , thyrsiform , umbelliform or nearly racemiform , arrays +  and singly +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
dentate +, denticulate +  and entire +
2-carpellate +
persistent +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
stipitate-glandular +  and stellate-pubescent +
not inflated +
Flowering (May–)Jun–Aug(–Sep). +
connate +  and distinct +
13 +  and 30 +
subequal +  and unequal +
flat;convex +
exalbuminous +
Introduced +
stipitate-glandular +  and piloso-hirsute +
scapiform +
appendaged +  and truncate +
papillate +
Pilosella aurantiaca +
Hieracium aurantiacum +
Hieracium +
species +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
20 cm200 mm <br />0.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
35 cm350 mm <br />0.35 m <br /> (60 cm600 mm <br />0.6 m <br />) +