[Greek peuke, pine or fir, and phyllon, leaf]

John L. Strother

Shrubs or treelets, mostly 100–300 cm. Stems (1–5+), branched. Leaves cauline; alternate; sessile; blades linear-filiform, rarely with 1–2 lateral lobes, ultimate margins entire, faces glabrous, gland-dotted. Heads discoid, borne singly. Involucres turbinate to campanulate, 6–12 mm diam. Phyllaries persistent or tardily falling, 8–18 in ± 2 series (linear to lanceolate, outer intergrading with subtending leaves). Receptacles flat, pitted or knobby, epaleate. Ray florets 0. Disc florets 12–21, bisexual, fertile; corollas creamy yellow, distally purplish (stipitate-glandular), tubes shorter than cylindric throats, lobes 5, erect, deltate (style-branch appendages rounded-truncate, papillate). Cypselae obconic to obpyramidal, hirsute (hairs tawny to reddish); pappi persistent, of 30–60 bristles subtending 15–20 subulate-aristate scales, or of ca. 120 bristles. x = 10.

Species 1: sw United States, nw Mexico.

Lower Taxon

• Peucephyllum schottii A. Gray