RMRDKCA3–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Potamogeton compressus L. Sp. PI. 127. 1753. Potamogeton sosteraefolius Schum. Enum. PI. Saell. 50. 1801. Stems much flattened, sometimes winged, widely branching. Leaves linear, obtuse and mucronate or short-pointed at the apex, 2'-i2' long, i"-a" wide, with 3 principal nerves and many fine ones; stipules scarious, obtuse, finely nerved, soon perishi
RMRDKC9F–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. July-Aug. 22. Potamogeton obtusifolius Mert. & Koch. Blunt-leaved Pondweed. Fig. 195. Potamogeton compressus Wahl. Fl. Suec. i: 107. 1824. Not L. 1753. Potamogeton obtusifolius Mert. & Koch, Deutsch. Fl. 1: 855. 1823. Stems usually slender, compressed, widely branch- ing, especially above. Leaves linear, 2'-$' long, ¥'-2" wide, obtuse, often mucron
RMRDKC92–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Potamogeton compressus J. E. Smith, Engl. pi. 418. 1794. Not L. 1753. Potamogeton pusillus var. major Fries, Novit. Ed. 2, 48. 1828. Potamogeton Friesii Ruprecht, Beitr. Pfl. Russ. Reichs, 4: 43- 1845. Potamogeton major Morong, Mem. Torr. Club, 3 : Part 2, 41. 1893. Not P. pusillus var. major M. & K. 1823. Stems compressed, 2°-4° long, branching. Leaves i¥-
RMRDKC96–. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus i. PONDWEED FAMILY. §3 23. Potamogeton Friesii Ruprecht. Pondweed. Fig. 196. Fries' Bot. 3:. Potamogeton compressus J. E. Smith, Engl. pi. 418. 1794. Not L. 1753. Potamogeton pusillus var. major Fries, Novit. Ed. 2, 48. 1828. Potamogeton Friesii Ruprecht, Beitr. Pfl. Russ. Reichs, 4: 43- 1845. Potamogeton major Morong, Mem. Torr. Club, 3 : Part 2, 41. 189
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