Flora of North America species comparison

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Hieracium piloselloides

glaucous hawkweed, glaucous King-devil, King devil, tall hawkweed, épervière des florentins
Habit Plants 15–40(–70+) cm.
Stems

proximally usually piloso-hirsute (hairs 2–4+ mm), rarely glabrous, distally usually glabrous, sometimes piloso-hirsute (hairs 1–3+ mm), stellate-pubescent, and/or stipitate-glandular.
Leaves

basal 3–8(–20+), cauline 0–2(–4+);

blades oblanceolate to lanceolate, 30–100(–150+) × 8–20+ mm, lengths 2.5–8+ times widths, bases cuneate, margins entire or denticulate, apices rounded to acute, faces glabrous or piloso-hirsute (on midribs and at margins, hairs 1–4+ mm).
Peduncles

piloso-hirsute (hairs 1–2+ mm), stellate-pubescent, and stipitate-glandular.
Involucres

campanulate, 5–7 mm.
Florets

(40–)60–80+;

corollas yellow, 6–9 mm.
Phyllaries

12–18+, apices acute to acuminate, abaxial faces piloso-hirsute (hairs 0.5–1.5+), stellate-pubescent, and stipitate-glandular.
Calyculi

bractlets 3–12+.
Heads

(3–)10–30+ in subumbelliform or corymbiform arrays.
Cypselae

columnar, 1.5–2 mm;

pappi of 25–40+,white bristles in 1 series, 3–4 mm.

Hieracium piloselloides
Phenology Flowering (May–)Jun–Aug(–Sep).
Habitat Disturbed sites
Elevation 10–300(–1500) m (0–1000(–4900) ft)
Distribution
from FNA
CT; DE; GA; IA; IL; IN; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OH; PA; RI; SC; VA; VT; WA; WI; WV; BC; NB; NF; NS; ON; PE; QC; Europe [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
Discussion

Plants called Hieracium praealtum Villars ex Gochnat (at least those called H. praealtum var. decipiens W. D. J. Koch) reputedly differ from members of H. piloselloides in having blades of their proximal leaves stellate-pubescent abaxially (M. L. Fernald 1950); such plants may be found in the flora and may merit taxonomic recognition.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 285.
Parent taxa Asteraceae > tribe Cichorieae > Hieracium
Sibling taxa
H. abscissum, H. albiflorum, H. alpinum, H. argutum, H. aurantiacum, H. bolanderi, H. brevipilum, H. caespitosum, H. carneum, H. crepidispermum, H. fendleri, H. flagellare, H. greenei, H. gronovii, H. horridum, H. lactucella, H. longiberbe, H. longipilum, H. megacephalon, H. murorum, H. nudicaule, H. paniculatum, H. parryi, H. pilosella, H. pringlei, H. robinsonii, H. sabaudum, H. scabrum, H. schultzii, H. scouleri, H. traillii, H. triste, H. umbellatum, H. venosum, H. vulgatum
Synonyms H. florentinum, Pilosella piloselloides
Name authority Villars: Prosp. Hist. Pl. Dauphiné, 34. (1779)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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