Webb et al. (1988) give the following botanical description in the Flora of New Zealand Series: Rhizomes short-creeping, scaly. Stipes 25-75 cm long, ± devoid of scales except at very base. Laminae ovate or broadly ovate, 20-40 × 10-30 cm, 1-pinnate or with lower pinnae forked. Primary pinnae in 2-7 pairs, widely spaced, linear, tapering to acute apices, entire or minutely crenate at apices, 12-27 × 0.8-1.8 cm; upper pinnae adnate; lower pinnae stalked. Sori occupying whole of both margins of pinnae except at apices, protected by reflexed margins.
P. cretica can be distinguished from native New Zealand ferns by its pinnate fronds with the lower pinnae often forked (Webb et al., 1988).
Valier (1995) writes that fronds of the Cretan brake can grow up to 2 feet (60 cm) tall with spores produced on separate fertile fronds; sterile fronds are noted to be wider. See Starr & Starr (2008) for images of this species from Hawai'i.
Compiler: IUCN SSC Invasive Species Specialist Group (ISSG) with support from the Auckland Regional Council (ARC)
Publication date: 2010-06-10
Recommended citation: Global Invasive Species Database (2018) Species profile: Pteris cretica. Downloaded from http://www.iucngisd.org/gisd/species.php?sc=1672 on 23-02-2018.