Rough-leaved hawkweed

Hieracium prenanthoides, the rough-leaved or northern hawkweed, is a perennial herb of the family Asteraceae found in cool-temperate to subarctic regions of Europe, Asia, and North America. From a short, fibrous-rooted rootstock it sends up a single erect, leafy stem 30-100 cm tall, usually clothed in short, stiff hairs. The numerous alternate leaves are lanceolate to oblong, sessile and clasping the stem with a slightly auriculate base, glabrous to bristly above and often glaucous beneath, with sparsely toothed margins. The branched terminal inflorescence carries several to many flower heads, each with bright yellow ligulate florets and an involucre of dark green, glandular-hairy phyllaries. It grows in damp upland meadows, stream-sides, ledges, and open woodland, particularly on base-rich substrates in mountainous areas.