Rosa gymnocarpa var. serpentina
Madroño 55: 174, fig. 2. 2008.
Stems (1–) 3–6 (–13) dm. Leaves 2–6 (–8) × 1.5–3 (–4) cm; stipules 5–11 mm; leaflets 5 (–7), often bluish green or red-tinged, ± leathery, terminal: petiolule 2–10 mm, blade broadly elliptic to obovate or ovate to nearly orbiculate, 4–20 × 4–20 mm, apex usually broadly obtuse to rounded, sometimes nearly truncate. Pedicels 10–15 mm, eglandular or stipitate-glandular (in same inflorescence). Flowers 2 cm diam.; petals 8–10 × 6–10 mm. Hips irregularly ovoid to elongate-ellipsoid. Achenes 1–4.
Phenology: Flowering Apr–Jun.
Habitat: Full sun in roadsides, ridges, and other openings in chaparral and stunted forests on ultramafic substrates
Elevation: 400–1500(–2300) m
Discussion
Of conservation concern.
Variety serpentina is the form that usually occurs in full sun on ultramafic substrates in the Siskiyou Mountains of northwestern California and southwestern Oregon.
Selected References
None.
Lower Taxa
"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.