Difference between revisions of "Hieracium argutum"
Trans. Amer. Philos. Soc., n. s. 7: 447. 1841.
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|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Hieracium | |genus=Hieracium | ||
Latest revision as of 19:51, 5 November 2020
Plants 30–60 cm. Stems proximally usually glabrous, sometimes piloso-hirsute (hairs 1–5+ mm) and stellate-pubescent, distally glabrous or stellate-pubescent. Leaves: basal 0–7(–12+), cauline (1–)3–8+; blades oblanceolate or spatulate to lance-linear, 60–120(–200) × 8–15(–45+) mm, lengths 5–10(–15+) times widths, bases cuneate, margins of some or all sinuately toothed, apices acute, faces piloso-hirsute (hairs 1–5+ mm) and stellate-pubescent. Heads 12–25(–40+) in paniculiform arrays. Peduncles usually stellate-pubescent, sometimes stipitate-glandular as well. Calyculi: bractlets 8–12+. Involucres ± campanulate to obconic, 7–9+ (× 5–6) mm. Phyllaries 13–21+, apices acute, abaxial faces usually stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well (hairs 0.5–1+ mm), rarely glabrous. Florets 15–30+; corollas yellow, 8–10 mm. Cypselae (black) columnar, 2.5–3 mm; pappi of 40–60+, white bristles in ± 2 series, 3.5–5 mm.
Phenology: Flowering Jun–Aug(–Oct).
Habitat: Pine and pine-oak forests
Elevation: 300–1000(–3000) m
Discussion
Selected References
None.