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Sphagnum jensenii
Very similar to S. majus in the field -- when the two grow together, S. jensenii is slightly darker and a little larger. The distinctive pore pattern of the branch leaf hyaline cells is the best identifying feature.
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Above, S. jensenii in the field |
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| Habit | Forming loose mats, dark brown to meddled reddish-green, with a mederate apical bud and one pendent branch visible between capitulum arms. |
| Stems | With a clear core and poorly differentiated hyalodermis. |
| Leaves | wvate-lanceolate and gradually narrowed to a narrowly truncate apex; stem leaves oblong and concave in the upper portion – thus the leaves appearing trianglar, hyaline cells without pores and with a few fibrils in upper part. |
| Leaf Cells | hyaline cells long, with numerous pores on both surfaces – the convex surface with 7-20 small elliptic to rounded, ringed and unringed pores, usually in two medial rows, the concave surface with 4-15 medium-sized, round, unringed pores, some near the cell corners and most in 1-2 medial rows, green cells isosceles-triangular, exposed on convex surface. |
| Alar Cells | |
| Habitat | In pools and emergent in poor fens and in permafrost collapse features. |
| Common Associates | Often with S. majus, S. obtusum, and S. fallax. |
pH Meter
