Aquatic plants of Illinois; an illustrated manual including species submersed, floating, and some of shallow water and muddy shores (1966) (19126341843)

Title: Aquatic plants of Illinois; an illustrated manual including species submersed, floating, and some of shallow water and muddy shores

Identifier: aquaticplantsofi00wint (find matches)

Year: 1966 (1960s)

Authors: Winterringer, Glen Spelman, 1906-; Lopinot, Alvin C

Subjects: Freshwater plants

Publisher: [Springfield Dept. of Registration & Education, Illinois State Museum Division]

Contributing Library: University of Illinois Urbana-Champaign

Digitizing Sponsor: University of Illinois Urbana-Champaign

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Text Appearing After Image:

SLENDER NAIAD Najas flexilis (Willd.) R. & S. 1. Leaves submersed, 1-3.5 cm long, 0.3 - 2 mm wide, slender, tapering to a fine point, often crowded at branch tips, margin with very fine spines requiring magnification. 2. Leaf tip. Drawing enlarged 5 times. 3. Leaf base sheathing and rounded, expanded but not abruptly lobed, marginal spines very small. Drawing enlarged 5 times. 4. Stem slender, often reddish- brown, branches numerous. Flowers in leaf axils, very small, pistillate in lower and staminate in upper branches (monoecious). 5. Fruit 2.5 - 3 mm long, 1 .5 mm thick, slender, the pericarp yellow- purple, seed shiny. Drawing en- larged 8 times. July - September. Ponds and slowly moving water. Distribution: Scattered localities but probably state wide. 74

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1966

University of Illinois Urbana-Champaign

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