Oncosiphon intermedius (Hutch.) Källersjö

Erect, aromatic annual herb, to 0.3 m tall; stems sparsely pilose to pilose sometimes glabrous. Leaves bipinnatisect, lanceolate to oblanceolate, 10-40 (70) x 5-20 (30) mm, pilose; lobes oblong to lanceolate, 1-5 x ±1 mm, mucronulate. Capitula discoid, homogamous, 5-18 mm diam., in simple, lax corymbs sometimes solitary; peduncles thickened toward the base of capitula, 10-80 (110) mm long, pilose, becoming densely pilose below capitula. Involucre broadly hemispherical, 5-15 mm diam., base cordate in mature heads; involucre bracts 3-seriate, slightly deflexed at anthesis, never decurrent on the peduncle, apices ± level with receptacle apex, midvein prominent, black-brown sometimes green, tomentose, margins and apices narrowly scarious; outer bracts narrowly oblong, ±4 mm long, middle bract lanceolate to narrowly oblong, 4-5 mm long, inner bracts narrowly lanceolate ±5 mm long. Receptacle flat-convex, slightly obscured by involucral bracts. Disc florets bisexual, corolla 3-4.5 mm long, orange; tube conspicuously swollen from apex to the base, ±1.5 mm long; limb campanulate, ±1.5 mm long; lobes narrowly lanceolate, ±0.7-1 mm long. Pappus inconspicuous or small, irregularly lobed ±0.3 mm long. Flowering is in spring (September to October).