Plants erect, 3-6 dm, glabrous. Aerial flowering stems erect, 0.5-1 dm. Leaves basal or basal and cauline; blade oblong to oblong-ovate. Inflorescences 10-50 cm. Involucres sessile and appressed to branches, rarely on erect pedun-cles 1-5 mm at proximal nodes, cylindric, 3-3.5 mm. Flowers 1-1.5(-1.8) mm; perianth white. Achenes 1-1.4 mm. Flowering Jun-Oct. Sandy to gravelly serpentine flats and slopes, mixed grassland and chaparral communities, oak and pine woodlands; 100-1500(-1950) m; Calif. Variety pedunculatum is encountered infrequently on the western foothills of the Sierra Nevada in Amador, Butte, Calaveras, El Dorado, Mariposa, Nevada, Placer, Plumas, Sierra, Tulare, and Tuolumne counties. The feature that was the basis for the varietal epithet, a pedunculate involucre, is seen only rarely.