No it isn't, they are related. One is Digitalis (Scrophulariaceae) which produces the chamical digitalin used as a heart stimulant and regulator, the other is Ceratotheca (Pedaliaceae).

The use of common names causes confusion like this which is why it's sensible not to use them.

oh dear...sure they are, they are in fact quite poisonous. although related to the true foxglove this one should NOT BE INGESTED AT ALL! be careful!