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Mayaca fluviatilis:
Bog moss
Mayaca fluviatilis Aubl.: Bog moss. Mayacaceae (bogmoss family).
Native perennial. Can be found in moist soil, as an emergent along shorelines and in shallow water, or fully submersed in water to 6.5 ft (2 m) deep. The emergent plants resemble shining clubmoss; bog moss, however, produces true flowers. On land, the leafy stems can be upright, or run along the ground and then turn or branch upwards, to at most 2 ft (60 cm). Stems of emersed plants are covered with short narrow pointed leaves arranged in a close spiral. These leaves are lance-shaped to linear, pointed at the tip and up to 0.4 in (1 cm) wide at the base; leaf midveins can be seen. Submersed plants usually have more flexible, much longer stems, up to several feet; their leaves are slender and thread-like, 0.25 in (0.6 cm) long. The 3-petaled flower is borne singly near the emersed stem tip on a slender stalk; it can range from purple to white. The flower stalk elongates as the fruit matures. Emergent plants can become densely packed.
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