Isoetes brevicula is a quillwort species native to Western Australia. It is a cormous, perennial, herb or (fern ally), to high, stock 3-lobed; leaves long; mature megaspores greyish white when dry. Submerged in rock pools on granitic outcrops.Isoetes brevicula J.Roy.Soc.Western Australia 67:34-35 (1984)
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