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Weed Identification - Weeds to know for I.D. Quizz-2007 Online description of weeds at URL: http://www.hear.org/starr/hiplants/images/index.html GRASSY WEEDS SCIENTIFIC NAME COMMON NAME FAMILY Comments Brachiaria mutica California grass, Poaceae Para grass Cenchrus echinatus CommonSandbur Poaceae Chloris barbata Swollen Fingergrass Poaceae Chloris radiata Radiate Fingergrass, Poaceae plushgrass Cynodon dactylon Bermuda grass Poaceae Digitaria ciliaris Henry's crabgrass Poaceae Digitaria insularis Sourgrass Poaceae Digitaria setigera Larger/itchy crabgrass Poaceae Echinochloa colona Jungle-rice Poaceae Eleusine indica Goosegrass, Wiregrass Poaceae Eragrostis tenella Lovegrass Poaceae E. amabilis Panicum maximum Guinea grass Poaceae Paspalum conjugatum Hilo grass Poaceae Paspalum dilatatum Dallis grass Poaceae Paspalum fimbriatum Panama paspalum Poaceae Rhynchelytrum repens Natal redtop, Natal grass Poaceae Setaria verticillata Bristly foxtail Poaceae Sorghum halepense Johnson grass Poaceae Sporobolus indicus Smutgrass, Poaceae West Indian dropseed SEDGES Cyperus rotundus Purple nutsedge, nut grass Cyperaceae Kyllinga brevifolia Green kyllinga Cyperaceae Kyllinga nemoralis White kyllinga Cyperaceae

Weeds to know for I.D. quiz TPSS/PEPS 481 – Lab, w/DeFrank – 956-5698, email [email protected] Page 1 of 2 Page 2

BROADLEAF WEEDS SCIENTIFIC NAME COMMON NAME FAMILY Comments Amaranthus spinosus Spiny amaranth Amaranthaceae Centella asiatica Asiatic pennywort Apiaceae Ageratum conyzoides Ageratum Asteraceae Bidens pilosa Spanish needle Asteraceae Emilia fosbergii Floras paintbrush Asteraceae Galinsoga parviflora Galinsoga Asteraceae Sonchus oleraceus Sow thistle Asteraceae Cardamine flexuosa Bitter cress Brassicaceae Coronopus didymus Swinecress Brassicaceae Drymaria cordata Drymaria Caryophyllaceae Commelina diffusa Honohono Commelinaceae Ipomoea triloba Aiea mornging, Convolvulaceae Little Bell Coccinia grandis Ivy gourd Cucurbitaceae Chamaesyce hirta Hairy or garden Euphorbiaceae spurge Chamaesyce Graceful spurge Euphorbiaceae hypericifolia Chamaesyce prostrata Prostrate spurge Euphorbiaceae Phyllanthus debilis Niruri Euphorbiaceae Chamaecrista Partridge pea, Fabaceae nictitans Japanese Tea Desmodium incanum Spanish, Kaimi Fabaceae clover Mimosa pudica Sensitive plant Fabaceae Malva parviflora Cheese weed Malvaceae Malvastrum False mallow Malvaceae coromandelianum Oxalis corniculata Yellow wood sorrel Oxalidaceae Plantago lanceolata Buckhorn plantain Plantaginaceae Plantago major Broad-leaved Plantaginaceae plantain Portulaca oleracea Common purslane Portulacaceae Spermacoce assurgens Buttonweed Rubiaceae Nicandra physalodes Apple of Peru Solanaceae Solanum americanum Black nightshade, Solanaceae Popolo Lantana camara Lantana Verbenaceae

Weeds to know for I.D. quiz TPSS/PEPS 481 – Lab, w/DeFrank – 956-5698, email [email protected] Page 2 of 2