Aquatic plants of Illinois; an illustrated manual including species submersed, floating, and some of shallow water and muddy shores (1966) (19126415163)

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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LEAFY PONDWEED Potamogeton foliosus Rat. 1 . Submersed leaves 2 - 5 cm sometimes 7 - 8 cm long, 0.5 - 3 mm wide, linear, narrowed at the base, with no glands. Veins 3-5, those on either side of the main vein very fine. Floating leaves none. 2. Petioles not distinct, the leaf blade narrowed to the base. Drawing enlarged 5 times. Stipules 5 - 10 mm long, lower half attached to the stem, soon disap- pearing . 3. Stem slender, freely branched, bushy. 4. Peduncles 3-10 mm long, often thicker than stem . Drawing enlarged 5 times. 5. Fruits (achenes) in globose spikes 2-8 mm long . Drawing enlarged 5 times. 6. Individual achene 2 - 2.5 mm long, with sharp, notched dorsal keel. Drawing enlarged 7 times. June - August. Ponds and slowly moving water. Distribution: Common and state wide. 90

aquatic plants of illinois an illustrated manual 1966 potamogeton foliosus botanical illustrations book illustrations botany horticulture agriculture plants freshwater biology freshwater aquatic plants images from internet archive

1966

University of Illinois Urbana-Champaign

http://commons.wikimedia.org/

public domain