Citations:heptasomic


 * 1960, T.S. Dhillon and E.D. Garber, “The Genus Collinsia. x. Aneuploidy in C. heterophylla” in the Botanical Gazette CXXI, № 3 (March 1960), page 125:
 * Diploids or disomics (2n), trisomics (2n + 1), tetrasomics (2n + 2), pentasomics (2n + 3), and, in certain lines, hexasomics (2n + 4) and heptasomics (2n + 5) were grown in the greenhouse during winter and spring; no gross morphological alterations could be detected. In the heptasomic one chromosome is replicated seven times and constitutes approximately 37% of the chromosomal material.