Red-tipped butterhead (bibb/boston) lettuce, OP heirloom.
Originally from Canada, this heirloom variety was on the verge of extinction until rescued by Joelene of GTF (Gathering Together Farm, in Oregon.)
Joelene grew it out, then donated seed to Wild Garden Seeds. Wild Garden then donated seed to Seeds of Change.
Carmona OP, Carmona red, Carmona red tipped, Carmona red-tip, Carmona
Carmona red tip
1 http://vegvariety.cce.cornell.edu/mainSearch/detail.php?variety_id=5643