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Volume IV (1988) - Flora of New Zealand Naturalised Pteridophytes, Gymnosperms, Dicotyledons
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Equisetaceae Michx. ex DC.

EQUISETACEAE

Stems siliceous, longitudinally grooved, jointed. Lvs each with 1 unbranched vein, united into whorls, sheathing the stems at nodes. Sporangia borne on stalked, peltate sporangiophores arranged in whorls to form distinct strobili. Homosporous; spores with chlorophyll and 4 elaters. Gametophytes green and surface-living.

1 living genus, cosmopolitan except for Australia and N.Z.

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