Hieracium scouleri |
Hieracium greenei |
|
---|---|---|
Scouler's hawkweed, woolly weed |
Greene's hawkweed |
|
Habit | Plants 30–100 cm; taprooted. | Plants 10–60 cm; taprooted. |
Stems | simple or branched; surfaces glabrous to tomentulose, puberulent, or pilose-setose, sometimes glandular-setose distally. |
erect; simple or branched, tomentulose, sometimes pilose near base. |
Leaves | basal or basal and cauline, narrowly or broadly oblanceolate or elliptic, 2.5–30 cm, bases attenuate; margins entire, rarely denticulate; surfaces pilose-setose and stellate-pubescent, rarely glabrous; basal petioles often winged; cauline usually sessile. |
basal and sometimes 1 cauline, oblanceolate, 3–15 cm; margins mostly entire; some usually blunt-toothed; tips usually acute; surfaces densely pilose-hispid; petioles sometimes winged. |
Inflorescences | panicle- or raceme-like arrays, bracteate or not. |
panicle-like arrays, bracteate. |
Involucres | campanulate in flower; ovoid in fruit, 5–12 mm. |
cylindric in flower and fruit, 9–12 mm. |
Florets | 15–45+; ligules 8–20 mm, yellow. |
5–10+; ligules 8–10 mm, yellow. |
Phyllaries | linear-lanceolate; surfaces pilose-setose with black hairs; inner 12–20+; outer gradually shorter. |
linear-lanceolate; surfaces lightly to moderately tomentulose; inner 6–10; outer gradually shorter. |
Fruits | columnar, 2.5–3 mm, dark brown. |
columnar, 3–3.5 mm, dark brown. |
2n | =18. |
=18. |
Hieracium scouleri |
Hieracium greenei |
|
Distribution | ||
Discussion | Forests, shrublands, grasslands, rocky ridges and slopes, roadsides. Flowering Jun–Sep. 0–2600 m. BR, BW, Casc, Col, ECas, Owy, Sisk, WV. CA, ID, NV, WA; north to British Columbia, northeast to Alberta, east to WY. Native. Hieracium scouleri is here given a broad circumscription to include such segregate taxa as H. albertinum and H. cynoglossoides, which are sometimes also recognized at varietal rank. |
Rocky slopes and outcrops, roadcuts, forest openings. Flowering Jun–Aug. 600–2500 m. Casc, ECas, Sisk. CA. Native. Occasional specimens are suggestive of hybridization with Hieracium bolanderi. The molecular phylogenetic studies by Gaskin and Wilson (2007) placed H. greenei as the sister taxon to H. parryi. |
Source | Flora of Oregon, volume 2 draft Kenton Chambers |
Flora of Oregon, volume 2, page 289 Kenton Chambers |
Sibling taxa | ||
Synonyms | Hieracium albertinum, Hieracium chapacanum, Hieracium cusickii, Hieracium cynoglossoides, Hieracium nudicaule, Hieracium scouleri var. albertinum, Hieracium scouleri var. scouleri | |
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