. 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. NAIADACEAE. Vol. I. 2. Naias flexilis (Willd.) Rost. & Schmidt. Slender Naias. Fig. 213. Caulinia flexilis Willd. Abh. Akad. Berlin, 95. 1803. N. flexilis Rost. & Schmidt, Fl. Sed. 384- 1824. Naias flexilis robusta Morong, Coult. Bot. Gaz. 10: 255- 1885. Stem slender or stout, 3°-6° long, forking. Leaves linear, pellucid, acuminate or abruptly acute, i'
. 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. NAIADACEAE. Vol. I. 2. Naias flexilis (Willd.) Rost. & Schmidt. Slender Naias. Fig. 213. Caulinia flexilis Willd. Abh. Akad. Berlin, 95. 1803. N. flexilis Rost. & Schmidt, Fl. Sed. 384- 1824. Naias flexilis robusta Morong, Coult. Bot. Gaz. 10: 255- 1885. Stem slender or stout, 3°-6° long, forking. Leaves linear, pellucid, acuminate or abruptly acute, i'-x' long, i"-i" wide, numerous and crowded on the upper parts of the branches, with 25-30 minute teeth on each edge; sheaths obliquely rounded with 5-10 teeth on each margin; fruit ellipsoid with very thin pericarp, 1 "-2" long, i"-l" in diameter; style long, per- sistent; stigmas short; seed smooth, shining, straw-colored, sculptured, though sometimes quite faintly, with 30-40 rows of square or hexagonal reticulations scarcely seen through the dark pericarp, "in ponds and streams throughout nearly all North America. Also in Europe. Summer. 3. Naias guadalupensis (Spreng.) Morong. Guadaloupe Naias. Fig. 214. Caulinia guadalupensis Spreng. Syst. 1: 20. 1825. Naias guadalupensis Morong, Mem. Torr. Club, 3: Part 2, 60. 1893. Stem nearly capillary, i°-2° long, widely branched from the base. Leaves numerous, 6"-o" long, i"-i" wide, acute, opposite or in fascicles of 2-5, frequently recurved, with sheaths and teeth like those of N. flexilis but generally with 40-50 teeth on each margin of the leaf; fruit about 1" long; pericarp dark and strongly marked by 16-20 rows of hexagonal or rectangular reticulations which are transversely oblong; seed straw-colored. In ponds and lakes, Pennsylvania to Oregon, Florida and Texas. Tropical America. Please note that these images are extracted from scanned page images that
Size: 1494px × 1673px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
