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Racomitrium lanuginosum
This species that is characteristics of acidic rocks is also found in abundance in oceanic peatlands, there it is easily distinguished by the coarse, whitish plants. The unique leaves having cells with extremely wavy walls cannot be mistaken for any other species.
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Above, Racomitrium lanuginosum in the field |
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| Habit | Erect, whitish-green to gray-green, pinnately branched plants growing in dense, hoary hummocks. |
| Stems | naked with closely set leaves. |
| Leaves | erect-flexuose to somewhat falcate -secund, lanceolate, acuminate, ending in a broad, decurrent, hyaline, point; costa single ending in the hyaline tip, margins roughened due to projecting papillae. |
| Leaf Cells | long rectangular with wavy, nodulose walls; laminal cells smooth, those of the hyaline awn densely papillose. |
| Alar Cells | not differentiated. |
| Habitat | Occurring on acidic rocks in montane, alpine, and arctic regions, and common forming hummocks in maritime bogs and poor fens. |
| Common Associates | Occurs in similar habitats as Sphagnum rubellum, S. papillosum and S. austinii. |
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