A moderately branched, up to c. 0.5 m high shrub. Stems ascending-erect, glabrous or sparsely tomentose, leafy, becoming glabrous and nude and marked with leaf-scars. Leaves alternate, spreading, somewhat canaliculate, thick, mid-ribbed, linear or narrowly obovate-oblong, 7-12 mm long, 1-3 mm wide, glabrous, indistinctly glandular-punctate, very glutinous, obtuse. Capitula 3-12 together in terminal cymes. Peduncles 2-6 mm during flowering. Involucre cyathiform, 2-5 mm wide. Involucral bracts 25-35, outer ovate, inner gradually narrower and oblong, innermost narrowly oblong-narrowly obovate with a spreading apical limb, up to 6 mm long, up to 2 mm wide, obtuse-rounded. Receptacle flat-convex, paleate. Paleae canaliculate, linear or narrowly spatulate, 4-6 mm long, apically 0.3-0.8 mm wide, dorsally gland-dotted, acute. Ray-florets 8-14. Tube cylindrical, 2-3 mm long, glandular. Lamina elliptic, 2-3.5 mm long, 1-1.5 mm wide, 4-veined. Style 2.7-4.2 mm long; style-branches 1.2-1.8 mm long. Achenes somewhat triquetrous, oblong, 1.5-2.3 mm long, 0.4-0.6 mm wide, ± densely pilose; pappus as in disc-florets. Disc-florets 20-35, perfect. Corolla 3.5-5 mm long, 0.6-0.9 mm wide. Tube cylindrical, ± glandular. Limb narrowly cyathiform; corolla lobes 0.4-0.7 mm long. Style 3.5-4.5 mm long; style-branches 0.6-1 mm long, apically penicillate and truncate; stylopodium distinct. Anthers 1.6-2.2 mm long; tails c. 1/5 of the length of the anther. Achenes almost terete, narrowly oblong, 1.5-1.9 mm long, 0.3-0.5 mm wide, glabrous; pappus crownlike, of ± connate scales, up to 0.8 mm long.
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Like O. genistifolia but leaves thick, somewhat channelled and glutinous.