Note the stigma flat on the surface of the column. All Calopogon species have this feature except C. tuberosus, which has the stigma somewhat tucked under the anther or otherwise approximately perpendicular to the column surface.

This plant was from my graduate research in the 1990s.

Stigmas pictured for--
barbatus: https://www.inaturalist.org/observations/30639354
multiflorus: https://www.inaturalist.org/observations/30639723
pallidus: https://www.inaturalist.org/observations/30640036
tuberosus var. tuberosus: https://www.inaturalist.org/observations/30640304.