Hieracium parryi |
Hieracium robinsonii |
|
---|---|---|
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 |
CA; OR
|
ME; NH; NB; NF; NS; QC |
Source | FNA vol. 19, p. 290. | FNA vol. 19, p. 291. |
Parent taxa | Asteraceae > tribe Cichorieae > Hieracium | Asteraceae > tribe Cichorieae > Hieracium |
Sibling taxa | ||
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) |
Web links |