Edit History
Hieracium lactucella Wallroth [family COMPOSITAE]
Date Updated: 23 July 2012
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Hieracium lactucella Wallroth [family COMPOSITAE], Sched. Crit., 408. 1822
Treatment Author(s)
John L. Strother
Information
Plants 9–20(–35+) cm. Stems proximally piloso-hirsute (hairs 1–2+ mm), sometimes stipitate-glandular as well, distally stellate-pubescent and stipitate-glandular (not piloso-hirsute). Leaves: basal 5–8+, cauline 0(–2+); blades spatulate to oblanceolate, 15–40 × 5–12 mm, lengths 3–6+ times widths, bases cuneate, margins entire, apices rounded to acute, abaxial faces glabrous or piloso-hirsute (hairs 1–3+ mm), adaxial glabrous or piloso-hispid (hairs 1–3+ mm), sometimes stellate-pubescent as well. Heads usually 2–5+ in ± umbelliform arrays, sometimes borne singly. Peduncles stellate-pubescent and stipitate-glandular (not piloso-hirsute). Calyculi: bractlets 9–13+. Involucres hemispheric, 6–8 mm. Phyllaries 16–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute (hairs 0.8–1.5+) as well. Florets 40–60+; corollas yellow, 8+ mm. Cypselae columnar, 1–2.5 mm; pappi of 25–40, white bristles in 1 series, 4–5 mm.
Phenology
may (spring), jun-jul (summer)
Altitude range
10+ m;
Distribution
Europe.USA N.Y.Canada N.S.
Discussion
According to A. E. Roland and M. Zinck (1998), Hieracium auricula Linnaeus and Pilosella auricula (Linnaeus) Schultz-Bipontinus have been misapplied to plants here called H. lactucella (see also discussion at 5. H. caespitosum).
Native/Introduced
introduced;
Date Updated: 23 July 2012
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Hieracium lactucella Wallroth [family COMPOSITAE], Sched. Crit., 408. 1822
Treatment Author(s)
John L. Strother
Information
Plants 9–20(–35+) cm. Stems proximally piloso-hirsute (hairs 1–2+ mm), sometimes stipitate-glandular as well, distally stellate-pubescent and stipitate-glandular (not piloso-hirsute). Leaves: basal 5–8+, cauline 0(–2+); blades spatulate to oblanceolate, 15–40 × 5–12 mm, lengths 3–6+ times widths, bases cuneate, margins entire, apices rounded to acute, abaxial faces glabrous or piloso-hirsute (hairs 1–3+ mm), adaxial glabrous or piloso-hispid (hairs 1–3+ mm), sometimes stellate-pubescent as well. Heads usually 2–5+ in ± umbelliform arrays, sometimes borne singly. Peduncles stellate-pubescent and stipitate-glandular (not piloso-hirsute). Calyculi: bractlets 9–13+. Involucres hemispheric, 6–8 mm. Phyllaries 16–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute (hairs 0.8–1.5+) as well. Florets 40–60+; corollas yellow, 8+ mm. Cypselae columnar, 1–2.5 mm; pappi of 25–40, white bristles in 1 series, 4–5 mm.
Phenology
may (spring), jun-jul (summer)
Altitude range
10+ m;
Distribution
Europe.USA N.Y.Canada N.S.
Discussion
According to A. E. Roland and M. Zinck (1998), Hieracium auricula Linnaeus and Pilosella auricula (Linnaeus) Schultz-Bipontinus have been misapplied to plants here called H. lactucella (see also discussion at 5. H. caespitosum).
Native/Introduced
introduced;
Date Updated: 23 July 2012
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Hieracium lactucella Wallroth [family COMPOSITAE], Sched. Crit., 408. 1822
Treatment Author(s)
John L. Strother
Information
Plants 9–20(–35+) cm. Stems proximally piloso-hirsute (hairs 1–2+ mm), sometimes stipitate-glandular as well, distally stellate-pubescent and stipitate-glandular (not piloso-hirsute). Leaves: basal 5–8+, cauline 0(–2+); blades spatulate to oblanceolate, 15–40 × 5–12 mm, lengths 3–6+ times widths, bases cuneate, margins entire, apices rounded to acute, abaxial faces glabrous or piloso-hirsute (hairs 1–3+ mm), adaxial glabrous or piloso-hispid (hairs 1–3+ mm), sometimes stellate-pubescent as well. Heads usually 2–5+ in ± umbelliform arrays, sometimes borne singly. Peduncles stellate-pubescent and stipitate-glandular (not piloso-hirsute). Calyculi: bractlets 9–13+. Involucres hemispheric, 6–8 mm. Phyllaries 16–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute (hairs 0.8–1.5+) as well. Florets 40–60+; corollas yellow, 8+ mm. Cypselae columnar, 1–2.5 mm; pappi of 25–40, white bristles in 1 series, 4–5 mm.
Phenology
may (spring), jun-jul (summer)
Altitude range
10+ m;
Distribution
Europe.USA N.Y.Canada N.S.
Discussion
According to A. E. Roland and M. Zinck (1998), Hieracium auricula Linnaeus and Pilosella auricula (Linnaeus) Schultz-Bipontinus have been misapplied to plants here called H. lactucella (see also discussion at 5. H. caespitosum).
Native/Introduced
introduced;
![Hieracium lactucella Wallroth [family COMPOSITAE]](/fsi/img/misc/plants/static_thumbs/flora_north_america_icon96.jpg)
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