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Hieracium pilosella
Hieracium pilosella
L.
Family:
Asteraceae
Flora of North America
Resources
John L. Strother in Flora of North America (vol. 19, 20 and 21)
Plants
10-25(-40+) cm.
Stems
proximally piloso-hirsute (hairs 1-3+ mm) and stellate-pubescent, distally piloso-hirsute (hairs 1-2 mm), stellate-pubescent, and stipitate-glandular.
Leaves:
basal (2-)5-10+, cauline 0(-3); blades elliptic to ± oblanceolate, 10-45(-75+) × 5-12(-18+) mm, lengths 2-4(-6+) times widths, bases cuneate, margins entire, apices acute, faces piloso-hirsute (hairs 2-7+ mm) and stellate-pubescent.
Heads
usually borne singly, rarely 2(-3).
Peduncles
piloso-hirsute and stellate-pubescent.
Calyculi:
bractlets 8-15+.
Involucres
hemispheric to obconic, 7.5-9 mm.
Phyllaries
20-34+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well.
Florets
60-120+; corollas yellow (often each with abaxial red stripe), 8-13+ mm.
Cypselae
columnar, 1.5-2 mm;
pappi
of 30+, white bristles in 1 series, 4-5 mm. Flowering May-Aug. Disturbed sites (sandy or gravelly soils, fields, lawns, roadsides); introduced; 10-100+ m; St. Pierre and Miquelon; B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., Que.; Conn., Del., Ga., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Oreg., Pa., R.I., Tenn., Vt., Va., Wash., W.Va.; Europe.
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