Sporophytes of Sphagnum junghuhnianum were not seen. Three other large, brown species of sect. Acutifolia have stem leaves without fimbriate to lacerate apices, S. subnitens (forms without red color), S. subfulvum, and S. flavicomans. Sphagnum flavicomans has a more pointed stem leaf and a darker brown color as well as a strongly different ecology and range. Both S. subnitens and S. subfulvum have a glossy sheen when dry that is lacking in S. junghuhnianum. Sexual condition and spore characters were taken from H. A. Crum (1984).
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