n = 9. Figs. 5-8.
New Zealand endemic, H. kerrii, formerly in the genus Sciacladus, is a handsome species up to 11 cm tall, bearing 8-25 sporophytes (Touw, 1971). Fronds are generally simple in this species compared to H. menziesii. The chromosome number n = 9 (Figs. 5, 6, 8) is recorded for two separate populations (Table I, Appendix I). The bivalents consist of three large, five intermediate and one which appears to be an m-bivalent (Fig. 7), similar to that described for H. menziesii by Newton (1973), although hers was from mitotic and this is from meiotic material. The chromosome number was confirmed at anaphase I (Fig. 8).