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NZ Plants
Asplenium gracillimum
Spleenwort family: Aspleniaceae
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Frond
I MacDonald
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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 leaflets
L Jensen
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Rachis with scales
L Jensen
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Fertile frond lower surface , rachis with leaflets
L Jensen
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Leaflet with sori
L Jensen
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Asplenium gracillimum is a terrestrial fern with a short erect stem bearing dark green fronds that rarely bear plantlets. Similar to A. bulbiferum except that A. gracillimum fronds are a darker green and rarely form plantlets. Formerly Asplenium bulbiferum subsp. gracillimum.
Found throughout New Zealand tolerating drier conditions than A. bulbiferum.
Vegetative characteristics |
Fertile frond and sporangia |
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Plant form: short, erect rhizome with fronds up to 1 m in length |
Frond appearance: Similar to sterile frond |
Frond stalk, midrib: oval scales with an elongated filamentous tip |
Sporangium location: on lower frond surface |
Frond shape: lanceolate to elliptic |
Sporangium position: close to leaflet margin |
Frond blade: 2-3-pinnate (divided up to 3x into leaflets or pinnae) |
Sporangia distribution: in groups (sori) |
Frond surface: leathery |
Sorus shape: linear |
Leaflets: oblong |
Sorus covering: linear covering (indusium) opening toward midrib |
