Lotus procumbens is a species of legume known by the common name silky deerweed.

On the north slope, reintroduction is suggested based on presence of deerweed (Lotus scoparius) and a native plant index number.

This new population lays eggs on an additional foodplant (common deerweed, Lotus scoparius) but shares physical and behavioral characteristics with the other now-extinct populations.

The entire species was originally thought to be particular only to the locoweed or rattlepod Astragalus trichopodus lonchus, but the population rediscovered in 1994 used Lotus scoparius (common deerweed) as its larval foodplant.