Excerpt from Genetics of Pitch Pine At various times, pond pine was considered a variety of pitch pine and until recently was included in standard texts as P. Rigida var. Serotina (michx.) Loud. (harlow and Harrar Clausen (1939) identified pond pine as a subspecies, P. Frigida ssp. Serotina and Smouse (1971) concurs. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.