PBS Forum
Geophyte discussions => General Discussion => Topic started by: MarcR on May 06, 2022, 06:26:40 PM
Until recently i was led to believe that the entire family had rhizomes. I was recently informed that some Delphiniums did not. Could someone knowledgeable elaborate on the subject?
Oh, the good old question "when is a rootstock a rhizome". As for Ranunculaceae, you can surely exclude the annuals ( Tribus Nigelleae, Genus Consolida). Several of the true Ranunculus, especially the weedy ones don't go past "fibrous roots", and several species are evergreen with a often huge taproot, e.g. Aquilegia, most Thalictrum and several of the Delphiniums - i'm always unsure if I should include D. semibarbatum in the wiki, I've seen it being called rhizomatous. I have no idea of monkshoods, because a poison permeable through skin is my personal Rubicon I won't cross.
so in short: it is complicated. ::)
Thank you!
Quote from: Martin Bohnet on May 06, 2022, 08:58:09 PMOh, the good old question "when is a rootstock a rhizome". As for Ranunculaceae, you can surely exclude the annuals ( Tribus Nigelleae, Genus Consolida). Several of the true Ranunculus, especially the weedy ones don't go past "fibrous roots", and several species are evergreen with a often huge taproot, e.g. Aquilegia, most Thalictrum and several of the Delphiniums - i'm always unsure if I should include D. semibarbatum in the wiki, I've seen it being called rhizomatous. I have no idea of monkshoods, because a poison permeable through skin is my personal Rubicon I won't cross.
so in short: it is complicated. ::)
I often find Aquilegias with the 'taproot' growing laterally instead of vertically, even in deep loose soil.
This caused me to mistake the taproot for a rhizome.