“Dicotyledons (Dicotyledoneae)”  

Dicotyledons

  In nature, Dicotyledons, aka dicots, one of the two groups flowering plants (angiosperms) distinguished by their embryonic leaves, characterized mainly by the seed having two embryonic leaves or cotyledons.
  Examples of some dicots include:

• Lepidium sativum (garden cress)
• Raphanus sativus (radish)
• Lactuca sativa (garden lettuce)

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“Actinorhizal Plants”  

  Actinorhizal Plants are a dicotyledon group of non-legume nitrogen fixers, characterized by a symbiosis with the nitrogen-fixing bacteria Frankia, which leads to the formation of nitrogen-fixing root nodules.
  The actinorhizal plants are distributed among three angiosperm phyto-terrestrial orders, in 8 families containing specific species in 24 genera including:

Cucurbitales order Coriariaceae family Coriaria Datiscaceae family Datisca Fagales order Betulaceae Alnus Casuarinaceae Casuarina Allocasuarina Ceuthostoma Gymnostoma Myricaceae Comptonia Myrica (including Morella)

Rosales order Elaeagnaceae Elaeagnus Hippophae Shepherdia Rhamnaceae Colletia Discaria Kentrothamnus Retanilla Talguenea Trevoa Ochetophila Ceanothus Rosaceae Cercocarpus Chamaebatia Cowania Dryas Purshia

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