Sphaeropteris glauca (common name pakong buaya; synonym Cyathea contaminans) is a tree fern in the family Cyatheaceae. It is the largest tree fern in the East Indies and the Malay Peninsula sometimes being over tall. Mature specimens have "curious multi-branched crowns". Whether this branching is dichotomous or axil was not stated. It normally grows in full sun or brilliant shade.