Research
The International Daffodil Register and Classified List (1998)
INTERPRETING THE REGISTER
Order of entries
The Register is arranged alphabetically.The names are sorted letter by letter, ignoring spacing, casing or punctuation, so that `Glen Isla' is followed by `Glenlee', `Glenleslie' and `Glen Lorne' and 'Mr R.M.Tobin' by 'Mrs Alfred White', 'Mrs Yvonne' and 'Mr Theo A.Havermeyer'. In botanical names, the N. for Narcissus and the ´ indicating a hybrid are ignored, so that 'Rupert Brooke' is followed by N. ´ rupidulus and 'Rural Gold'.
Cultivar names, cultivar-group names, trade designations and popular names
Cultivar names, cultivar-group names, trade designations and popular names are accompanied by one or more of the following items of information:
(See under Botanical Names for the information attached to botanical names)
- Registration
Names accepted by the Royal Horticultural Society since becoming International Registration Authority in 1955 are registered. Names dated before 1955 are deemed registered. Any other names are unregistered and are marked as such.
- Division
Daffodils with cultivar names are assigned to Divisions 1-12 in the horticultural classification.
A question mark against the division means that the classification is uncertain, which in many cases is because the cultivar was formerly classified as a Leedsii, a division which until 1950 included cultivars both of Division 2 and Division 3 measurements in today's terms.
- Colour code
The letters W, G, Y, O, R and P indicate the colour of the cultivar.
Colours recorded are those that the cultivar displays at maturity in the region where it was bred. However, marked and regularly occurring variation in colour when the same cultivar is grown elsewhere may be noted in the Register. Any case for inclusion of such a note should be sent to the International Registrar (see Amending the Register).
- Colour sub-division
Until replaced by Dr Throckmorton's system in 1975, a system of colour coding by sub-divisions had been in use since 1950 (replacing a system dating from 1910). The 1950 system applied colour sub-divisions (a), (b), (c) and (d) to Divisions 1-3, with "coloured" meaning yellow or some colour other than white, and "white" meaning white or whitish, as follows:
(a) Perianth coloured: corona coloured, not paler than the perianth
(b) Perianth white; corona coloured
(c) Perianth white; corona white, not paler than the perianth
(d) Any colour combination not falling into (a), (b) or (c)
These sub-divisions have occasionally been retained in the Register. They are a guide to colouring when, for lack of information about a flower, a full interpretation of the sub-division has not been possible under the current scheme. The sub-divisions may all be found in earlier registers and supplements, should today's interpretations be called into question.
- Originator's name
A name in brackets is, in the case of pre-1955 cultivars, that of the hybridizer or other introducer; in later cultivars it is almost invariably that of the hybridizer.
- Date of first flowering
A date in brackets is the date of first flowering. In the case of pre-1955 cultivars, and of later ones too if they are unregistered, it is usually based either on the earliest reference the RHS has to the cultivar or on the year of death of the originator. It is expressed as "pre-" or "c." such and such a date. In registered cultivars it is given only if it is ten years or more earlier than the date of registration.
- Registrant's name
A name outside the brackets is that of the registrant. It is attached to cultivars registered since the RHS became International Registration Authority in 1955.
- Date of registration
A date outside the brackets is the date of registration. It is attached to cultivars registered since the RHS became International Registration Authority in 1955.
- Parentage
In parentages of cultivars, the seed parent is given before the pollen parent. When it is not known which was which, the parents are in alphabetical order. (Note that the parents of botanical hybrids are always given in alphabetical order.)
Parents given as seedlings under number are the hybridizer's own seedlings unless otherwise stated.
The term Poetaz means that one parent was N. poeticus or derived from it and the other N. tazetta or derived from it.
- Seedling number
Seedling numbers are supplied by the registrant or culled from catalogues.