Rosa gymnocarpa var. serpentina

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

Distribution

• Generated Map
• Legacy Map

Calif., Oreg.

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

None.