Before making any collections make sure that they will be justified and can be submitted to an acceptable ‘Determiner’, to decide the ID. If you are not a member of one of the specialist societies first enquiries are possibly best addressed to the British Museum Natural History (BMNH), South Kensington.
Samples should be of –
- Fresh (preferred) fruiting material.
- A portion of stem with fully developed hips (though not necessarily ripe).
- Approx., 20cm of mature leading stem with leaves and characteristic prickles.
- Some notes on size and type of bush.
- If sepals are falling a representative sample should be included separately.
Material in flower is impossible to determine.
Rosa checklist (3kb, ZIP)
- Graham and Primavesi (1993) Roses of Great Britain and Ireland, Botanical Society of the British Isles, London.