Gila Rockdaisy

Perennials or subshrubs, 22–70 cm (often in dense clumps, stems upright to pendent or spreading); glabrous or puberulent, often glandular. Leaves: petioles 9–45(–80) mm; blades usually pinnately 3-foliolate (proximal) or 3-lobed, 14–30 × 4–20 mm, lobes much broadened distally, often cruciform, sometimes 3-lobed to divided, ultimate margins entire or lobed. Heads borne singly or (2–4) in corymbiform arrays, 8–11 × 9–12 mm. Peduncles 1–4 mm. Involucres broadly campanulate to hemispheric. Phyllaries 20–30, linear-lanceolate to oblanceolate, 4–7 × 0.8–1.5 mm. Ray florets 8–18; corollas yellow, laminae oblong to subovate, 4–10 × 2–4 mm. Disc florets 70–200; corollas yellow, tubes 1.5–2 mm, throats subtubular to narrowly funnelform, 2.5–3.5 mm, lobes 0.7–0.8 mm. Cypselae narrowly oblanceolate to narrow oblong-elliptic, 2.6–4 mm, margins notably calloused, sparsely short-hairy, sometimes glandular; pappi of 1(–3) bristles 3–4.6 mm, sometimes plus hyaline scales.

Laphamia gilensis M. E. Jones, Zoë 2: 15. 1891

Leptopharynx gilensis (M. E. Jones) Rydberg
Laphamia gilensis M. E. Jones, Zoe 2: 15. 1891.
A suffruticose perennial with shrubby base; stem 1-2.5 dm. high, glabrous, striate and
erect; leaves mostly opposite; petioles 1.5-2 cm. long; blades about 1 cm. long, ovate or
broadly ovate in outline, 3-ribbed, those of the lower leaves merely dentate, those of the
rest 3-lobed and dentate, puberulent and somewhat glutinous; heads solitary at the ends of
the branches; peduncles 1-3 cm. long; involucre hemispheric, about 6 mm. high and 1 cm.
broad; bracts broadly oblanceolate, acute; ligules yellow, about 5 mm. long; disk-flowers
many; corollas 5 mm. long; tube 1.5 mm. long, glandular, much shorter than the cylindric
throat; achenes 3.5 mm. long, slightly puberulent, sparingly short-ciliate on the margins;
pappus of a callous margin and a single awn 3 mm. long.
TypR locality: Putnam's Ranch, near Gila River, Arizona. Distribution: Known only from the type locality.