Chromosome numbers in Kunzea (Myrtaceae)

Abstract

Documented chromosome counts are reported for the first time for nine Kunzea species and two varieties. Confirmatory counts are provided for K. sinclairii. Counts are also documented for a further nine unnamed variants of the Australasian K. ericoides complex. In addition, counts and chromosome-pairing behaviour are reported for eight putative wild New Zealand Kunzea hybrids, including one example of ×Kunzspermum hirakimata, and artificial hybrids from 21 controlled crosses (18 Kunzea and two controlled Kunzea × Leptospermum). Some chromosomal variation is evident in the New Zealand members of the K. ericoides complex, which helps to support the recognition of additional taxa within this aggregate species.