Climacium japonicum is a large moss distributed in Eastern Asia. Like Climacium dendroides (native to Central Europe), it forms tree-like, ramified sprouts and runner-like shoots. However, the branchlets of C. japonicum grow in an overhanging habit.
Unfortunately, this nice, extraordinary moss is not a recommendable plant for aquaria. Even when supplied with optimal CO2 and nutrient levels, the palmlets grow brown by and by when kept submersed, and the moss forms long, hardly ramified shoots that are pretty inconspicuous, and no mor tree-like sprouts.
However, C. japonicum might be an interesting moss for terraria with a moderately moist substrate. As it comes from regions with a temperate, moist climate, cooler temperatures and moist, circulating air can be of advantage.
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