Sica or Sieche Hollow State Park lies on the county line of Marshall and Roberts counties of South Dakota. The state park is in the Coteau des Prairies. It is a westward extension of the eastern deciduous forests. The woodlands contain sugar maple and bur oak. The hills are covered in tall grass prairies.
The list of plants was generated from three sources. Herbarium collections, observations of plants on iNaturalist, and a list of observed plants authored by D. J. Ode are the sources for the list.
The first source is the Great Plains Region Herbarium Network accessed at NGPHerbaria.org. It is a data portal that allows queries of herbaria. Herbaria contain mostly pressed and dried vouchers of plants. The query for the data is State equal “South Dakota”, county equal “Marshall” or “Roberts” and locality equal “Sica” or “Sieche”. This gets any collection recorded in or near the park.
The second source is INaturalist accessed at inaturalist.org. Inaturalist is a database containing observations of plants and other biological organisms. The data was accessed using a place name of “Sica Hollow State Park”. Only “research grade” records are included. To be a research grade plant observation at species level or lower the following criteria must be met.
- It has a date
- It is georeferenced
- It has photos
- It isn’t of a captive or cultivated organism
- More than 2/3 of identifiers are in agreement of the species identification
The third source is a list compiled from checklists by Theodore VanBruggen, Charles Taylor, & Dave Ode This list was authored by D. J. Ode in 1999.
This plant list was generated on March 17, 2026. It does not include anything added after this date. I highly recommend submitting observations to inaturalist.
