Difference between revisions of "Hieracium robinsonii"
Rhodora 45: 317. 1943.
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|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Hieracium | |genus=Hieracium | ||
Revision as of 21:17, 16 December 2019
Plants 10–35+ cm. Stems proximally piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent, distally piloso-hirsute (hairs 0.5–1+ mm) and stellate-pubescent. Leaves: basal 2–4, cauline (2–)4–10; blades (often purple-mottled) oblong to lanceolate, 20–80 × 7–20+ mm, lengths 3–4 times widths, bases cuneate, margins usually dentate, sometimes entire, apices acute to acuminate, abaxial faces glabrous or piloso-hirsute (especially midribs), adaxial glabrous or stellate-pubescent. Heads 1–5(–10) in ± corymbiform arrays. Peduncles piloso-hirsute and stellate-pubescent (not, or rarely, stipitate-glandular). Calyculi: bractlets 10–16. Involucres campanulate to obconic, 10–15 mm. Phyllaries 25–35, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular. Florets 30–50+; corollas yellow (lengths unknown). Cypselae columnar, 3–5 mm; pappi of ca. 30, stramineous bristles in ± 2 series, ca. 6 mm.
Phenology: Flowering Jul–Aug.
Habitat: Stream banks and lake shores, sands and clays, rock crevices
Elevation: 10–300+ m
Distribution
N.B., Nfld. and Labr. (Nfld.), N.S., Que., Maine, N.H.
Discussion
Selected References
None.