Aquatic and wetland plants of southwestern United States (1972) (19560410010)

Title: Aquatic and wetland plants of southwestern United States
Identifier: aquaticwetlandpl00corr (find matches)
Year: 1972 (1970s)
Authors: Correll, Donovan Stewart, 1908-; Correll, Helen B
Subjects: Aquatic plants -- Southwestern States; Wetland plants -- Southwestern States
Publisher: [Washington Environmental Protection Agency; [For sale by the Supt. of Docs. , U. S. Govt. Print. Off. ]]
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Fig. 44: Potamogeton gramineus: a, tip of compact flowering spike, X 4; b, keeled stipules on flowering branch, X 1%; c, submersed lower part of stem, showing the sterile branches with leaf variations and the young stipules clasping the stem, X %; d, upper part of stem, showing submersed as well as floating leaves, X 7-,; e, achene with obscure keels, X 8; f, submersed foliage, showing transitional forms, X l^f,; g, young linear leaf, showing venation and tip, X 3. (From Mason, Fig. 31).

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