procumbent, or erect against the steep sides of rocks; branches divaricate, flexuous, stout, woody, rigid, brittle, puberulous, densely leafy or covered with the scars of old leaf-cushions, 6–12 in. long; leaves 3-nate, very closely set, spreading or squarrose-recurved, linear, round-backed, sulcate, rigid, glabrous, 4–7 lin. long; flowers mostly solitary, sometimes 2–3-nate, at length pendulous; pedicels puberulous, 2–3 lin. long; bracts approximate, ovate, acuminate, keeled, scarious, about 3 lin. long; sepals like the bracts but much larger and more adpressed, 4–5 lin. long; corolla ovoid or ovoid-tubular, inflated, glabrous, pale yellow, 8–11 lin. long, by about 3 lin. in diam. at the widest part; segments erect, and at length connivent, long, tapering, obtuse, nearly 1/2 the length of the entire corolla; filaments rather broad, dilated and thickened below the anther, very little bent, 5–6 lin. long; anthers oblong, acute, affixed dorsally at the very base of the deeply parted divaricate cells, 1 1/4–1 3/4 lin. long, aristate or muticous; pore nearly 2/3 the length of the cell; awns spreading and upcurved, or decurved, from 1/8– 1/3 of the cell in length; style straight, shorter than the corolla-segments, but mostly manifest; stigma subsimple, small; ovary globose, rough, glabrous. null