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Parry's hawkweed, Scouler's woollyweed

Robinson's hawkweed

Habit Plants 15–45+ cm. Plants 10–35+ cm.
Stems

proximally piloso-hirsute (hairs 1–3+ mm) and stipitate-glandular, distally piloso-hirsute (hairs 1–2+ mm) and stipitate-glandular.

proximally piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent, distally piloso-hirsute (hairs 0.5–1+ mm) and stellate-pubescent.

Leaves

basal (0–)3–5, cauline 2–3(–8);

blades lance-elliptic to lanceolate, 30–80(–100) × (3–)10–20(–30+) mm, lengths 3–8(–10+) times widths, bases cuneate, margins usually entire, sometimes denticulate, apices obtuse to acute, faces usually piloso-hirsute (hairs 1–3+ mm), sometimes glabrate.

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.

Peduncles

densely stipitate-glandular.

piloso-hirsute and stellate-pubescent (not, or rarely, stipitate-glandular).

Involucres

campanulate, 10–12 mm.

campanulate to obconic, 10–15 mm.

Florets

30–60+;

corollas yellow, 9–11 mm.

30–50+;

corollas yellow (lengths unknown).

Phyllaries

13–21+, apices ± acuminate, abaxial faces stipitate-glandular.

25–35, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular.

Calyculi

bractlets 7–9+.

bractlets 10–16.

Heads

(1–)3–12+ in corymbiform arrays.

1–5(–10) in ± corymbiform arrays.

Cypselae

columnar, 2.5–3 mm;

pappi of 50–60+, white bristles in ± 2 series, ca. 5 mm.

columnar, 3–5 mm;

pappi of ca. 30, stramineous bristles in ± 2 series, ca. 6 mm.

Hieracium parryi

Hieracium robinsonii

Phenology Flowering Jun–Jul. Flowering Jul–Aug.
Habitat Openings in brush, grassy slopes, serpentines Stream banks and lake shores, sands and clays, rock crevices
Elevation 10–2000 m (0–6600 ft) 10–300+ m (0–1000+ ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
ME; NH; NB; NF; NS; QC
[BONAP county map]
Source FNA vol. 19, p. 290. FNA vol. 19, p. 291.
Parent taxa Asteraceae > tribe Cichorieae > Hieracium 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. pilosella, H. piloselloides, H. pringlei, H. robinsonii, H. sabaudum, H. scabrum, H. schultzii, H. scouleri, H. traillii, H. triste, H. umbellatum, H. venosum, H. vulgatum
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. piloselloides, H. pringlei, H. sabaudum, H. scabrum, H. schultzii, H. scouleri, H. traillii, H. triste, H. umbellatum, H. venosum, H. vulgatum
Synonyms H. smolandicum subsp. robinsonii
Name authority Zahn: in H. G. A. Engler, Pflanzenr. 79[IV,280]: 1128. (1922) (Zahn) Fernald: Rhodora 45: 317. (1943)
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