Native Plant Nursery
Ann Arbor, MI.
Plant Database Documentation
Coefficients of conservatism range from 0 - 10 and represent an estimated probability that a plant is likely to occur in a landscape relatively unaltered from what is believed to be pre-European settlement condition.
As explained in the Michigan Floristic Quality Assessment:
"Each native Michigan species was assigned a coefficient of conservatism (C) following the methodology and philosophy detailed in Swink and Wilhelm (1994) and Wilhelm and Masters (1995). Coefficients of conservatism range from 0 - 10 and represent an estimated probability that a plant is likely to occur in a landscape relatively unaltered from what is believed to be pre-European settlement condition. A C of 0, therefore, is given to plants such as Acer negundo (box elder) that have demonstrated little fidelity to any remnant natural community, i.e. may be found almost anywhere, while a C of 10 is applied to those plants like Potentilla fruticosa (shrubby cinquefoil) that are almost always restricted to a presettlement remnant, i.e. a high quality natural area. Intermediate values are assigned to taxa such as Quercus bicolor (swamp white oak) or Trillium grandiflorum (large white trillium), when it is certain it is faithful to remnant natural communities, but it is uncertain that the condition of the community from which it comes is still representative of presettlement condition, i.e. the community may be degraded."
"In Michigan, certain species are known to exhibit varying degrees of conservatism over their statewide range, and thus the C assigned reflects what would be expected most commonly. Coefficients of conservatism were assigned by Anton Reznicek, Michael Penskar, and William Brodovich with assistance from Gerould Wilhelm. Adventive taxa are plants spreading into Michigan from a source outside of Michigan since pre European settlement. Listed taxa refer to plant taxa listed as endangered, threatened , extirpated, or special concern by the State of Michigan."
The Native Plant Nursery LLC, Ann Arbor, Michigan, US
we grow plants native to Michigan from Michigan collected seed or plants.