Identification notes
This plant is smaller than L. cavifolia (often L. lamacerina too) and the acute angle between the main lobe and the lobule is usually easy to see with a hand-lens. The strongly convex upper surface of the dorsal lobe also means that it has a characteristic ‘zipper’ appearance where it is possible to see between adjacent leaves in a way that isn’t possible with more common Lejeunea spp.. It often grows in really humid places intermixed with other small Lejeuneaceae and may be hard to tell apart from, for example, Harpalejeunea molleri. Microscopic examination of underleaf shape and oil bodies separates these two easily, though.
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