|The upright stems with broad ovate leaves and nodding
capsules of Plagiomnium cuspidatum suggest a species
of the Bryaceae until one takes a closer look.
Photo by Robert A. Klips, Ohio Moss and Lichen
The most distinctive characteristic of this species is its ovate to diamond-shaped leaf with a prominent midrib and conspicuous, narrow, sharp teeth in the upper half. The leaf base is broad and clasps the stem. The leaf cells are roundish, with thick, translucent walls. The leaves are twisted when dry. The nodding, cylindrical to ovate capsules arise on elongate stalks from erect leafy stems.
|The nodding capsules are a plump, ovate-
cylindrric. Photo by Robert A. Klips, Ohio
Moss and Lichen Association
|The prominent, narrow teeth arise from a thickened border of rigid cells. To the inside, cells are small, rounded, and thick-walled. Photo from Wikimedia Commons, licensed by Creative Commons..