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John Daniel Boon (1874-1952)
S. W. Geiser

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Bryology in Texas - 1. Mosses (Musci)
Eula Whitehouse

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Effects of Rotenone and Some Common Herbicides on Fish-Food Organisms
Max Zischkale

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Addenda on Texas Chamaesyce (Euphorbiaceae)
Lloyd H. Shinners

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An Ecological Study of Cladophora glomerate (Chlorophyceae) near Dallas
Martha Hasty Thurman and Robert A. Kuehne

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Notes on Megathymus yuccae (Boisduval & LeConte), with Description of a New Subspecies (Lepidoptera, Rhopalocera, Megathymidae)
H. A. Freeman

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Remarks on the Genus Cercocarpus in Texas
Rogers McVaugh

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Yucca pallida McKelvey var. edentata (Trelease) Cory, comb. nov.
V. L. Cory

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Cakile lanceolata (Willd.) 0. E. Schulz var. geniculata (B. L. Robinson) Shinners, comb. nov
Lloyd H. Shinners

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Cyperus globulosus Aubl. var. robustus (Boeck.) Shinners, comb. nov.
Lloyd H. Shinners

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Eragrostis oxylepis Torr. var. Beyrichi (J. G. Smith) Shinners, comb. nov.
Lloyd H. Shinners

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Range Extension of Natrix grahami B. & G. in Texas
Lawrence Curtis and Donald Sellers