Aquatic and Wetland Vascular Plants of the Northern Great Plains
54. Juncaginaceae, the Arrow-grass Family
1. Triglochin L. -- Arrow-grass2. Triglochin maritima L.
More robust than the preceding, (2)3-8 dm tall, tufted from a thick creeping rootstock. Leaves erect to curved-spreading, somewhat flattened, especially toward the base, 1/2 to fully the length of the plant, 1.5-3(4) mm wide; ligules entire, acute to rounded, 1-5 mm long. Racemes densely flowered, (5)10-40 cm long; pedicels 1-6 mm long. Flowers 2-3 mm across; tepals 1.5-2 mm long; carpels 6, stigmas 6. Fruits short-cylindric, 2-5 mm long, 1-3 mm thick, splitting into 6 oblong segments, the fruit axis terete. Jun--Aug. Wet meadows, fens, alkaline or saline marshes, ditches and flats, stream banks and other wet places; common over most of the region; (Circumboreal, in N.Amer. s to PA, IN, IL, IA, NE, CO, Mex. and Baja CA; also S.Amer.).
 Triglochin maritima. |
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