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Volume I (1961) - Flora of New Zealand Indigenous Tracheophyta - Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledons
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Isoetes alpina Kirk

I. alpinus T. Kirk in T.N.Z.I. 7, 1875, 377, t. 25.

I. multiangularis Col. in T.N.Z.I. 22, 1890, 449.

Type locality: Lake Guyon, Nelson, alt. 1,000 m.

Submerged, axis short, deeply 3-lobed; lvs up to 75, 15 cm. to 5 dm. long, slender, dark green. Sporangia about oblong, up to 5 mm. long, megaspores greyish, smooth or obscurely tubercled; microspores ∞, minute.

DIST.: N., Lake Taupo; S., frequent in montane and lower subalpine waters.

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