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NZ Plants
Asplenium lyallii - Lyall's spleenwort
Spleenwort family: Aspleniaceae
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Frond
L Jensen
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Frond stalk (stipe) with scales
L Jensen
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Stipe with scales
L Jensen
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Frond upper surface, midrib (rachis) with leaflets
I MacDonald
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Frond upper surface, rachis with scales
L Jensen
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Rachis with scales
L Jensen
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Fertile frond lower surface, leaflets with young sori
MacDonald
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Leaflet lower surface, sori with mature sporangia
L Jensen
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Fertile fond lower surface, older sori with fully open sporangia
I MacDonald
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Asplenium lyallii is a terrestrial fern with a short, stout stem (rhizome) bearing narrow glossy green, thick and leathery erect fronds.
An endemic species found on limestone-rich soil and rock in drier coastal to subalpine areas throughout New Zealand.
Vegetative characteristics |
Fertile frond and sporangia |
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Plant form: short, erect rhizome with fronds up to 400 mm |
Frond appearance: similar to sterile frond |
Frond stalk, midrib: scales narrowly triangular |
Sporangium location: on lower frond surface |
Frond shape: oval to elliptic |
Sporangium position: close to leaflet margin |
Frond blade: 1-2-pinnate (subdivided 1-2x into leaflets or pinnae) |
Sporangia distribution: in groups (sori) |
Frond surface: leathery, glossy, hairless |
Sorus shape: linear |
Leaflets: variable, ovate to oblong and from blunt to sharp tipped with smooth to toothed margins; stalked |
Sorus covering: linear covering (indusium) opening toward midrib |
