释义 |
tree fernnounA large palm-like fern with a trunk-like stem bearing a crown of large fronds, sometimes reaching a height of 24 m and occurring chiefly in the tropics, particularly the southern hemisphere.- Cyatheaceae and related families, class Filicopsida: seven genera, in particular Cyathea and Dicksonia.
The flat, strappy foliage of the exotic night bloomer contrasts texturally with a bed companion, the enormous, finely cut fronds of an Australian tree fern....- The new Mediterranean Garden is beginning to grow, and the new tree fern now has 6 fronds and more coming on.
- In a partial cross section of a tree fern that lived about 200 million years ago, blue chalcedony (a type of quartz) and orange iron oxides and hydroxides have replaced the original structures.
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