Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 81 to >300
Comments: Thousands of populations are probably extant rangewide. Michigan: common, not tracked (Michigan Natural Features Inventory); Indiana: not common, not tracked (Indiana Natural Heritage Data Center); Manitoba: >100 (Manitoba Conservation Data Centre); Texas: one historic occurrence reported in 1929 (a collection from the shore of a playa lake in Bailey County) but not seen since then-record may be erroneous (Texas Conservation Data Center), and is considered so by Kartesz (1999); Kansas: about 30 (Kansas Natural Features Inventory); Idaho: 4, all limited in extent (Idaho Conservation Data Center); Wyoming: 9 (2 historical) (Wyoming Natural Diversity Database); Mississippi: 27 (Mississippi Natural Heritage Program); New Mexico: 8 (New Mexico Natural Heritage Program); Georgia: 23 reported, hundreds likely (Georgia Natural Heritage Program); Vermont: 25 (Vermont Nongame and Natural Heritage); Colorado: 28 (Colorado Natural Heritage Program); Delaware: 2 (Delaware Natural Heritage Program); New Hampshire: 9 current and 10 historical (New Hampshire Natural Heritage Inventory); South Dakota: 23, mostly in Black Hills (South Dakota Natural Heritage Database); Arizona: 6 (in White Mountains)-Ron Coleman, an expert on the orchids of Arizona, has failed to relocate two of the occurrences during several trips, and it is believed that they have been extirpated due to trampling and collecting (Sue Schuetze pers. comm.).