branchlets glabrous or glandular-puberulous; leaves 3-nate, adpressed-imbricate, 2/3–1 lin. long, linear-oblong, obtuse, with 4–6 sessile glands on each margin, otherwise glabrous, but apparently somewhat viscid; heads globose, terminal, 1/4– 1/3 in. in diam., 4–6-flowered; pedicels 1/2– 3/4 lin. long, bracteate at or below the middle; bracts erect, with their tips applied to the calyx, 2/3– 3/4 lin. long, subequal and linear-oblong or lanceolate or the middle one broader and ovate, thickened and leafy at the tips, glabrous, ciliate with long simple or slightly hispid hairs; calyx 4-partite; segments 3/4 lin. long, 1/3 lin. broad, lanceolate, acute, ciliate with simple or slightly hispid hairs 3/4 lin. long, and with a few similar hairs on the back at the base; corolla-tube 1 1/4 lin. long, constricted near the top, ovoid and sharply 4-angled below the constriction, pubescent below the constriction outside and at the constriction within; lobes 1/2 lin. long, ovate, obtuse, concave, erect, glabrous; anthers 1/3 lin. long, cuneate-subquadrate, scabrous, spurless; ovary subtruncate or subemarginate at the apex, glabrous; style 2 lin. long, glabrous; stigma small, capitate. null