Hieracium murorum L.
Stolons 0. Stem erect, ± stout, 20-50 cm tall, with sparse to numerous simple eglandular hairs below, giving way to sparse to numerous stellate and sparse glandular hairs above. Lvs mostly basal, dull dark green, oblong to ovate or lanceolate, acute, truncate at base, coarsely toothed especially at base; teeth apiculate, the basal pair spreading to reflexed; hairs rough, simple, eglandular, sparse beneath, numerous above, dense and shaggy on petiole. Rosette lvs petiolate; lamina 4-12 × 2-5 cm, green or purplish beneath; stem lvs 1-(2), similar to basal, but shorter and more coarsely toothed, shortly petiolate. Capitula 5-15. Peduncles curved, with dense stellate and numerous glandular hairs. Involucre 10-12 mm long; bracts narrowly triangular to acuminate, with numerous dark glandular hairs and sparse to numerous stellate hairs especially on margins. Florets bright yellow, not striped on outer face, c. 2× length of involucre. Achenes black, c. 3 × 0.5 mm. Pappus sordid, c. 6 mm long.
N.: southern Ruahine Range (Mt Takapari); S.: Canterbury (Hanmer Forest Park), Otago (Dunedin).
Europe 1940
Exotic forest, streamside cliffs, roadsides.
H. murorum is similar to H. lepidulum and H. pollichiae, but can be distinguished by the spreading to recurved basal lf teeth, the solitary stem lf, the absence of stellate hairs on the lvs, the curved peduncles in subdichotomous cymose infls and the absence of simple eglandular hairs on peduncles and involucral bracts. It can be distinguished from H. argillaceum group, which also has densely glandular involucral bracts, by its truncate lf bases, solitary stem lf, and absence of stellate lf hairs.
