Compilation
Hieracium gracile

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Name

Identification
Hieracium gracile Hook. [family COMPOSITAE ] (stored under name); Hieracium gracile Hook. [family COMPOSITAE ] Verified by Deardorff, D.C.,
Related name
  • Hieracium gracile
  • Hieracium prenanthoides
  • Hieracium triste

Flora

Entry for Hieracium triste Willdenow ex Sprengel [family COMPOSITAE]
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 triste Willdenow ex Sprengel [family COMPOSITAE], Syst. Veg., 3: 640. 1826
Chlorocrepis tristis (Willdenow ex Sprengel) Á. Löve & D. Löve [family ]
Hieracium gracile Hooker [family COMPOSITAE]
Hieracium gracile var. alaskanum Zahn [family COMPOSITAE]
Hieracium gracile var. densifloccosum (Zahn) Cronquist [family COMPOSITAE]
Hieracium gracile var. detonsum (A. Gray) A. Gray [family COMPOSITAE]
Hieracium gracile var. yukonense A. E. Porsild [family COMPOSITAE]
Hieracium triste var. fulvum Hultén [family COMPOSITAE]
Hieracium triste subsp. gracile (Hooker) Calder & Roy L. Taylor [family COMPOSITAE]
Hieracium triste var. gracile (Hooker) A. Gray [family COMPOSITAE]
Hieracium triste var. tristiforme Zahn [family COMPOSITAE]
Treatment Author(s)
John L. Strother
Information
Plants (3–)10–20(–40+) cm. Stems proximally glabrous or stellate-pubescent, distally usually piloso-hirsute (hairs 1–8+ mm) and/or stellate-pubescent and/or stipitate-glandular, sometimes glabrous. Leaves: basal (3–)5–12+, cauline 0–2(–3+); blades obovate to spatulate or oblanceolate, (15–)25–40(–60+) × 5–10(–25+) mm, lengths 2–3+ times widths, bases cuneate, margins usually entire, rarely denticulate, apices rounded to obtuse (often apiculate), faces usually glabrous, sometimes stipitate-glandular and/or scabrellous. Heads usually 2–8+ in corymbiform arrays, sometimes borne singly. Peduncles stellate-pubescent and stipitate-glandular. Calyculi: bractlets 5–8+. Involucres ± campanulate, (6–)7–10 mm. Phyllaries 13–21+, apices acuminate, abaxial faces piloso-hirsute (hairs 1–3+ mm), stellate-pubescent, and stipitate-glandular. Florets 20–60+; corollas yellow, 5–6 mm. Cypselae columnar, 1.5–3.5 mm; pappi of 30–40+ white or sordid bristles in ± 2 series, 4–5 mm.
Phenology
jun-aug (summer), sep (fall)
Altitude range
100–3500 m;
Distribution
USA AlaskaUSA Calif.USA Colo.USA IdahoUSA Mont.USA N.Mex.USA Oreg.USA UtahUSA Wash.USA Wyo.Canada Alta.Canada B.C.Canada N.W.T.Canada Yukon

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