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Sphagnum austinii
This dominant species of oceanic bogs is easily distinguished by the presence of fine striations on the green cell walls where they contact the hyaline cells and by the equilateral-triangular green cells. Historically, S. austinii was included in the concept of S. imbricatum; however, the latter species is a fen species not commonly found in northern North America.
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| Habit | Large, turgid, brownish plants forming dense canopies, 0-1 inconspicuous pendent branches visible between capitulum arms. |
| Stems | dark, with porose and fibrose hyalodermis, spreading branches consisting of both short swollen branches and thread-like attenuate ones. |
| Leaves | Ovate-ellipitc, hooded, and entire at apex, convex surface just below apex with denticulations due to resorption of apical portions of hyaline cells, stem leaves lingulate, without fibils or pores, resorbed on convex surface. |
| Leaf Cells | Hyaline cells short, bulging on convex surface, with numerous elliptic pores on convex surface and inconspicuous rounded pores on concave surface; green cells equilateral- triangular, broadly exposed on concave surface, adjoining hyaline cells walls with fine striations (comb fibrils). |
| Alar Cells | |
| Habitat | Forming hummocks and well-consolidated lawns in oceanic bogs. This is the major peat-forming species of oceanic areas. |
| Common Associates | Sphagnum papillosum also occurs in oceanic bogs, but generally closer to the water level. |
pH Meter
