Cimicifuga/Actaea dioecious?

http://www.mobot.org/hort/plantfinder/ is an interesting resource. I checked what it said about C. dahurica, and it made no mention of it being dioecious, either. Maybe I will have to write to Heronswood, as their catalogue seems to be the only place that says so.

However, don't give up on books! Most of the books I have list more cimicifugas than mobot does, except for the newly-released "Black Negligee" which of course isn't in any books. The mobot plantfinder lists these:

Cimicifuga 'Black Negligee' - Bugbane
Cimicifuga dahurica - Bugbane
Cimicifuga racemosa - Black cohosh
Cimicifuga ramosa 'Atropurpurea' - Cohosh
Cimicifuga ramosa 'Hillside Black Beauty' - Bugbane
Cimicifuga simplex 'White Pearl' - Bugbane

The Royal Horticultural Society's Index of Garden Plants by Mark Griffiths describes 13 species (C. americana, arizonica, biternata, dahurica, elata, foetida, heracleifolia, japonica, laciniata, racemosa, ramosa, rubifolia and simplex) and 7 additional varieties or cultivars.

My favourite resource for new plants, however, is an old book: The 3 volume Standard Cyclopedia of Horticulture by L.H. Bailey 1928. He did not list "dead entries" but only plants in cultivation. Many plants listed were in cultivation then but then died out and the areas in which they are native were closed to collectors. Some of these areas are now being collected from again, and the plants are considered new to us.

Diane Whitehead Victoria, British Columbia, Canada
plant AND booklover - one wall of my bedroom is floor to ceiling garden books.
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