Abstract
Two species of Clianthus are accepted as endemic to New Zealand. Clianthus puniceus refers to plants with matt, grey‐green, and narrow leaves, and light salmon‐red or salmon‐pink flowers. Clianthus maximus, described by W. Colenso in 1885, is reinstated at species rank. Clianthus maximus is distinguished from C. puniceus by its leaves, which are glossy, green, and broad, and its flower which is significantly larger and a dark salmon‐red, red, or orangered colour. The glossiness of C. maximus leaves results from a thick layer of epicuticular waxes; in C. puniceus the matt surface results from the cuticle which is ornamented with a reticulum of buttressed ridges. The two species are considered to be threatened, with C. maximus having a rank of vulnerable, whereas C. puniceus is critically endangered.
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