Sphaeromorphaea

Annual or perennial herbs; stems terete, not winged, with eglandular hairs and sessile or shortly stalked resin globules. Leaves cauline, alternate, sessile or pseudopetiolate. Capitula hemispherical to globose, solitary or in pairs, in leaf axils or opposite leaves, disciform, sessile or shortly pedunculate; involucral bracts 3–4 seriate, subequal, cartilaginous, incurved; receptacle flat, naked, pitted. Outer florets female, conical, lageniform or filiform with an expanded base, 3-lobed; inner florets bisexual, fertile or functionally male, cylindric to narrowly campanulate, 4- or 5-lobed; anthers tailed at base, with ovate apical appendages; style branches hairy, extending down shaft. Cypselas cylindric, longitudinally ribbed, sparsely hairy or glabrous, glandular or not; pappus a minute rim sometimes extending into 1–6 barbellate bristles.