The reference numbers used in the seedlists listed below are neither field numbers nor collection numbers. These numbers are prefixed JJA for Jim and Jenny Archibald Seeds – the business set up to distribute seeds of their own and others collection and cultivation. There followed a six or seven digit reference number, so a typical number would be JJA 745.802 (which refers to a Peonia).

The numbers are alphanumeric based on an alphabetic sequence of genera and species names combined with locations where that plant was collected.

European, West Asian & North African Refs. : 100.000 To 999.999 Acantholimum - Viola

North American Refs. : 1.000.000 To1.999.999 Achlys – Zinnia

South American Refs. : 2.000.000 To 2.999.999 Abutilon – Zephyranthes

Southern African Refs. : 3.000.000 To 3.999.999 Agapanthus – Zantedeschia

East Asia Refs. : 4.000.000 To 4.999.999 Aconitum – Viburnum

Australasian Refs. : 5.000.000 To 5.999.999 Abrotanella – Xyris

Cultivated Hybrids & Selections Refs. : 6.000.000 To 6.999.999 Agapanthus – Trillium

There is no existing link or correlation between JCA field numbers and JJA seedlist numbers. If Jim visited a site six times over the years and collected seed each time, there would be six field numbers contained within a single seedlist number. Likewise, if another collector sent Jim seed from that same site it would be contained in the same seedlist reference number.

[note by David Stephens]

A Master List of Seed Numbers has been compiled by David Stephens to whom we are most grateful. This list is in the form of a searchable pdf. It is as complete as possible, to date. Entries marked # indicate a link to a photo. Sizes of the photos vary.  This master list is presented here for personal research purposes.  As with all items in the Archibald Archive, it should not be copied or republished without permission which should be sought via the SRGC.

Photos of many plants grown from JCA/JJA seed but which do not have links included in the master seedlist file, can be found in this thread of the SRGC Forum.

Here follows a list of all the full seedlists issued by Jim and Jenny Archibald from 1983 to 2011. This valuable and historical resource will be of great value to both those who grew plants from Jim and Jenny's seeds and to plantspeople everywhere.  Please select the Seedlist(s) you wish to view from the links below.