Senecio macowanii Hilliard

Perennial or biennial herb up to c. 1 m tall, roots cylindric, pilose, stems, leaves and involucral bracts all glandular-pilose, very viscid, flowering stems one or several from the crown, lateral to the radical rosette, simple below the inflorescence branches, densely leafy in lower part, distantly so above. Radical leaves erect, rosetted, up to 15 x 4 cm, elliptic-lanceolate or oblanceolate, apex obtuse, tapering into a broad, flat, petiole-like base, membranous, margins sometimes shallowly lobed, always callose dentate or serrate, the sinuses sometimes denticulate; cauline leaves similar but soon sessile, becoming smaller, oblong-lanceolate and acute to acuminate upwards, base half-clasping, sometimes auricled. Heads discoid, c. 4-15 corymbose-paniculately arranged on long sparsely bracteate peduncles, sometimes further compounded. Involucre campanulate, bracts c. 14, 10-15 mm long, about equalling the disc, calyculus bracts few, small. Flowers c. 45, corolla 8-10 mm long, cylindric below, abruptly campanulate above, yellow. Achenes 4.5 mm long, narrowly cylindric, closely ribbed, white hispid between the ribs. Pappus copious, of fine white scabrid hairs.