Hieracium scabrum

Michaux

Fl. Bor.-Amer. 2: 86. 1803.

IllustratedEndemic
Synonyms: Hieracium scabrum var. intonsum Fernald & H. St. John Hieracium scabrum var. leucocaule Fernald & H. St. John Hieracium scabrum var. tonsum Fernald & H. St. John
Treatment appears in FNA Volume 19. Treatment on page 288. Mentioned on page 281, 293.

Plants (15–)30–60+ cm. Stems proximally piloso-hirsute (hairs 1.5–5+ mm), sometimes stellate-pubescent as well, distally stellate-pubescent, sometimes stipitate-glandular, rarely piloso-hirsute (hairs 1–2+ mm). Leaves: basal 0(–3), cauline 6–24+; blades elliptic or oblanceolate to spatulate or lanceolate, (20–)35–80(–120+) × (10–)20–35(–50+) mm, lengths 2–6+ times widths, bases cuneate to rounded-truncate, margins usually entire, sometimes denticulate, apices rounded to obtuse, faces hirtellous to piloso-hirsute (hairs 0.5–1+ mm). Heads (5–)10–25(–50+) in corymbiform to paniculiform arrays. Peduncles stellate-pubescent and stipitate-glandular (hairs 0.3–0.6+ mm). Calyculi: bractlets 12–15+. Involucres campanulate, 7–9 mm. Phyllaries 13–21+, apices ± acuminate, abaxial faces stellate-pubescent and stipitate-glandular, rarely, if ever, piloso-hirsute. Florets (30–)40–60+; corollas yellow, 9–11 mm. Cypselae columnar, 2.5–3 mm; pappi of 30–40+, stramineous bristles in ± 2 series, 6–7 mm.


Phenology: Flowering Jul–Sep.
Habitat: Sandy soils, open, disturbed sites (fields, stream sides), wooded sites
Elevation: 10–300+ m

Distribution

V19-405-distribution-map.gif

N.B., N.S., Ont., P.E.I., Que., Ark., Conn., Del., D.C., Ga., Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Hieracium scabrum"
John L. Strother +
Michaux +
N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Ark. +, Conn. +, Del. +, D.C. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
10–300+ m +
Sandy soils, open, disturbed sites (fields, stream sides), wooded sites +
Flowering Jul–Sep. +
Fl. Bor.-Amer. +
Illustrated +  and Endemic +
Hieracium scabrum var. intonsum +, Hieracium scabrum var. leucocaule +  and Hieracium scabrum var. tonsum +
Hieracium scabrum +
Hieracium +
species +