- ≡ Stegania patersonii R.Br., Prodr. Fl. Nov. Holland. 152 (1810)
- ≡ Lomaria patersonii (R.Br.) Spreng., Syst. Veg., ed. 16, 4, 62 (1827)
- ≡ Spicanta patersonii (R.Br.) Kuntze, Revis. Gen. Pl. 2, 822 (1891)
- ≡ Austroblechnum patersonii (R.Br.) Gasper & V.A.O.Dittrich in Gasper et al., Phytotaxa 275: 203 (2016)
Blechnum patersonii is similar to B. colensoi, but the sterile laminae are either undivided, or have only 1–4 pairs of pinnae, with two broad wings of lamina tissue extending below the basal pair either side of the rachis. The pinnae are 6–32 mm wide, generally narrower than in B. colensoi. The fertile fronds have 1–2 pairs of pinnae, with sori and indusia in one row either side of the costa, continuous along the length of the pinna, but also extending along the rachis wings.
North Island: Northland.
Altitudinal range: 10 m.
Collected once as a cultivation escape in Kerikeri.
Occurs naturally in Australia (Queensland, New South Wales, Victoria, Tasmania), Flores, Timor and Papua New Guinea (Chambers & Farrant 2012).
Recorded as a sporeling from the parent plant in cultivation.
Heenan et al. (2008). Voucher AK 288168, 2004.