Large-flowered wild hollyhock Large-flowered wild hollyhock

Sphaeralcea grandiflora Rydberg, Bull. Torrey Bot. Club 31: 565. 1904; Iliamna angulata Greene; Phymosia grandiflora (Rydberg) Rydberg

Stems 1–2 m; herbage sparsely stellate-pubescent to glabrate. Leaf blades deeply 5- or 7-lobed, 6–13 cm wide, lobes lanceolate to triangular, middle lobe ± equaling to 2 times length of lateral lobes, base truncate to cordate, margins coarsely dentate. Inflorescences clusters forming interrupted spikes to racemes; involucellar bractlets lanceolate-ovate, 8–12 × 2–3 mm, 3/4 as long as calyx. Flowers: calyx 11–18 mm, lobes triangular-ovate, 8–10 × 5–8 mm, broader than long, exceeding tube, densely villous-hirsute; petals pink, drying purplish, 2–3 cm. Schizocarps 12–15 mm diam.; mericarps 12, 10 mm. Seeds 2 or 3, dark brown, 2.5–3 mm, muricate, with few simple hairs.

Flowering Jun–Aug. Wet mountain meadows, open woodlands, stream courses; 2000–2700 m; Ariz., Colo., N.Mex., Utah.