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NZ Plants

Lastreopsis hispida - hairy fern

Family: Dryopteridaceae

Lastreopsis hispida is a terrestrial fern with creeping stems (rhizomes) bearing brownish green, 5-angled harsh fronds. The presence of a conspicuous covering of bristle-like scales and shorter hairs on the frond stalk (stipe), midrib (rachis) and veins is a distinguishing feature of this species.
Found in damp lowland or coastal forest throughout the North Island and in coastal regions of the South Island.

sVegetative characteristics

Fertile frond and sporangia

Plant form: creeping stems with fronds up to 60 cm in length

Frond appearance: similar to sterile frond

Frond stalk, midrib: long black bristle-like scales; small glandular hairs

Sporangium location: on lower frond surface

Frond shape: oval

Sporangium position: to either side of vein

Frond blade: 3-4-pinnate (divided 3-4x into leaflets or pinnae)

Sporangia distribution: in groups (sori)

Frond surface: hairs

Sorus shape: circular

Leaflets: stalked, narrow, toothed, pointed at tip

Sorus covering:  kidney-shaped