View photos of the plant, Rudbeckia occidentalis (Western coneflower).

View photos of the plant Rudbeckia laciniata (Cutleaf coneflower).

Due to its botanical relation, occasionally Rudbeckia laciniata is suggested as a replacement for Echinacea. Having gathered it several times and experimented with it (self and others), I tend to think this supposition is inaccurate. If the plant stimulates any immunological activity, it is far inferior to Echinacea.