Dittrichia viscosa (L.) Greuter

Spreading, virgate, viscid, aromatic, perennial herb to 1.5 m high, glandular-puberulous, villous. Leaves oblong-elliptic, 5–8 cm long, semi-amplexicaul, dentate, acute. Capitula in narrow terminal pyramidal racemes; involucre turbinate, 7–10 mm long; outer bracts lanceolate, green, glandular; intermediate bracts narrowly oblong, apiculate, with green glandular linear stereome and scarious margins. Ray florets c. 13, biseriate; ligule narrowly oblong, 10–13 mm long, considerably exceeding bracts, yellow. Disc florets c. 42; corolla narrowly cylindrical, shortly 5-lobed, yellow; style branches spreading, linear, obtuse. Achene cylindrical, c. 2 mm long, constricted below pappus.

Principally near the coast, colonising disturbed, often wet, areas.

The leaves are used for preserving raisins and potatoes.

Can be grown by seedlings.