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NZ Plants

Polystichum wawranum

Family: Dryopteridaceae

Polysticum wawranum is a terrestrial fern with erect stems bearing blue green scaly fronds.
An endemic species found in damp lowland or coastal forest throughout New Zealand

Vegetative characteristics

Fertile frond and sporangia

Plant form: creeping stems with fronds up to 1 m in length

Frond appearance: similar to sterile frond

Frond stalk, midrib: hair-like scales widest at base

Sporangium location: on lower frond surface

Frond shape: oval

Sporangium position: to either side of vein

Frond blade: 2-3-pinnate (divided 2-3x into leaflets or pinnae)

Sporangia distribution: in groups (sori)

Frond surface: hairs

Sorus shape: circular

Leaflets: oblong, toothed, pointed at tip

Sorus covering: round