Lab-Poisonous Plants

Lab-Poisonous Plants - Lab 10 - Poisonous Plants...

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Lab 10 - Poisonous Plants johnsongrass Sorghum halepense PIP - FW Poaceae/Andropogoneae ("sorghum" = from the Italian name) ("halepense" = from Aleppo, northern Syria) a. has paired spikelets - shaped like footballs b. tall grass; noxious weed in most of U.S. c. has coarse - tough rhizomes d. occasionally causes livestock poisoning due to prussic acid in second growth careless weed Amaranthus retroflexus AIPW Amaranthaceae ("amaranthus" = unfading) ("retroflexus" = directed backwards or downwards) a. annual weed of cropland and pastures b. leaves lanceolate to ovate shaped; red tap root c. flowers indistinct with sharp bracts d. may cause nitrate poisoning when hayed e. another common name is redroot pigweed water hemlock Conium maculatum PNPC Apiaceae ("cicuta" = the Latin name for hemlock) ("maculata" = spotted, blotched, or bearing spots) a. leaflets sharply toothed, often purplish b. compound umbelliferae flowers c. leaves bipinnate; leaflets sessile or nearly so d. cicutoxin in all plant parts, very toxic
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This note was uploaded on 11/14/2010 for the course NRM 3501 taught by Professor Wester during the Fall '09 term at Texas Tech.

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Lab-Poisonous Plants - Lab 10 - Poisonous Plants...

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