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NZ Plants

Lastreopsis microsora

Family: Dryopteridaceae

Lastreopsis microsora is a terrestrial fern with creeping stems (rhizomes) bearing pale green, 5-angled fronds. Both the frond stalk (stipe), midrib (rachis) and leaflet veins are sparsely covered with flat, brown scales, abundant soft whitish hairs and short glandular hairs.
Found in damp lowland or coastal forest throughout the North Island and in coastal regions of the South Island.

Vegetative characteristics

Fertile frond and sporangia

Plant form: creeping stems with fronds up to 50 cm in length

Frond appearance: similar to sterile frond

Frond stalk, midrib: sparse flat brown scales; numerous soft, whitish 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: whitish hairs on veins

Sorus shape: circular

Leaflets: stalked, oblong, toothed, pointed at tip

Sorus covering: kidney-shaped