Hieracium robinsonii (Zahn) Fernald

Robinson's hawkweed (en)

Species

Angiosperms > Asterales > Asteraceae > Hieracium

Characteristics

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.
More
Similar to no. 8 [Hieracium lachenalii C. C. Gmel.], but smaller, 1–3.5 dm; lf-blades to 8 × 2 cm; basal lvs persistent or deciduous; spreading hairs of the peduncles glandless, often few; heads solitary or few (to 10); invol bracts stellate and shortly hispid with blackish, glandless or gland-tipped hairs, gradually tapering to a very sharply pointed tip; achenes 3–5 mm. Ledges and rock-crevices along streams; n. N.H. to Nf. and Que. June–Sept.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.35
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 1-5
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 21 - 30
Germination temperacture (C°) 10 - 15
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Hieracium robinsonii world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:122425-2
WFO ID wfo-0000044094
COL ID 6LW2R
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Hieracium robinsonii Hieracium smolandicum subsp. robinsonii