Glandular Dog-rose - Rosa squarrosa
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Species Description
Widespread and fairly frequent throughout the UK but under-recorded; most common in the South. Habitat includes: hedgerows, scrub, woodland edge etc. Growing habit: Deciduous Perennial. Height: Up to 4 m. Flowers: May to June.
Stace 4:
Rosa squarrosa (A. Rau) Boreau (R. dumalis auct. non Bechst., R. canina 'group Dumales') - Glandular Dog-rose.
Differs from R. canina in leaflets biserrate or multiserrate, with small red glands on teeth; stipules densely fringed with small red glands; petiole, rachis and sometimes lowerside midrib of leaflets with few stalked glands; (2n=35). Naticve; habitat and distribution as for R. canina. Hybrids with other spp. of Rosa have not yet been fully elucidated.
Key:
- Orifice of disc about 1/5 its total width; styles glabrous or hairy, forming more or less loose group, not completely covering disc; sepals mostly patent to reflexed after flowering, falling before fruit ripe
- Leaflets biserrate or multiserrate, with small glands on teeth; stipules and rhachides with dense glands, some stalked