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I have two other Java ferns that stay smaller but neither stays around an inch.

One has leaves that are intermediate between normal Java fern and the narrow leaf. It grows as a tight clump and has not grown over about half as tall as the regular stuff (that doesn't mean it's small!). The other difference is the sori. They grow abundantly on submerged plants and are arranged in a neat row on either side of the midrib instead of randomly as in pteropus. My research so far indicates that it may be Microsorum brassii.

The other grows to around 6 inches and has leaves slightly slimmer than what I've described above. Leaves have a different texture and vein pattern. Some sori have appeared, but it's too soon to say how they will really look. It also grows in a tight clump (instead of a long rhizome). There's an old PAM article by Karen Randall that pictures the 'short narrow leaf' Java fern. It may be that.

There is more than just pteropus out there, but fern experts are hard to find. I'm still searching for the Dr. Tan of ferns! :wink:
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