Status: Native
Synonyms:
Parthenium hysterophorus Linnaeus
Parthenium lyratum Gray
Parthenium confertum var. lyratum is not woody like Parthenium incanum, but rather herbaceous and bright green in appearance rather than grayish. The lobed leaves of Parthenium confertum var. lyratum are larger than those of Parthenium incanum as well. The flowers of the two species look similar though, with about 5 widely spaced short white ray flowers and a woolly appearing white disc. The achene is glabrous, rather than pubescent as with Parthenium incanum. Parthenium confertum var. lyratum is found on rocky slopes at middle elevation.
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Parthenium confertum var. lyratum, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, closeup of flowerheads, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, closeup of leaf and flowers, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, macro of flower, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, field macro of flower, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, closeup of branch and leaf, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, leaf measurement, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, flowerhead measurement, photo Russ Kleinman, Mimbres Valley, Acklin Hill, Aug. 21, 2009
Parthenium confertum var. lyratum, field macro of glabrous achene with pappus of two oval scales, photo Russ Kleinman, Mimbres Valley, Acklin Hill, October 21, 2009
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