Cyclosorus interruptus (Willd.) H.Ito

Bot. Mag. (Tokyo) 51: 714 (1937) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: endangered (e)

Rhizome long-creeping, slender, growing tips covered in scales. Fronds erect, to 1 m; stipe 45–60 cm long, glabrous, dark brown at base, paler and flattened above, shallowly grooved. Lamina oblong-lanceolate, pinnate with pinnae moderately to deeply lobed, mid-green and glossy above, paler beneath, coriaceous, glabrous on upper surface; rachis and mid-rib deeply grooved, grooves not connecting, rachis moderately or densely covered with scales and scattered red glands, under surface of mid-rib and veins covered in scales. Pinnae tapering in length from stipe to apex, oblong to lanceolate; lobes acute, triangular or ovate, sometimes slightly falcate, margin entire or crenulate, weakly recurved; veins free except for lowest veins in adjacent lobes which join to form single excurrent vein. Sori copious, round; indusium kidney-shaped, covered with acicular hairs and scattered glands; spores black.

VVP. Also WA, NT, Qld, NSW. Growing in permanently wet ground. Only known from a single location in Victoria, on a grassy creek flat near Portland.

Created by: Andre Messina, 2014-06-17
Updated by: Val Stajsic, 2018-08-22

Sinclair, S.; Stajsic, V. & Sutter, G. (2012). Cyclosorus interruptus (Thelypteridaceae): new to Victoria, Muelleria 30(2): 183-188.

Distribution map


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Cyclosorus interruptus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Cyclosorus interruptus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native

State distribution

Distribution map
Western Australia
Northern Territory
New South Wales
Australian Capital Territory