Cosmos pacificus Melchert x C. sulphureus Cav.

  • Filed As

    Asteraceae
    Cosmos pacificus Melchert x C. sulphureus Cav.

  • Identifiers

    NY Barcode: 02714848

    Occurrence ID: cab1c4dc-ccd7-4c03-a9de-0271351109ad

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C IK
3<3
MEXICO:	STATE OF COLIMA
Hybrid: Cosmos pacificus X C. sulphureus	n=12II
n = 12, but meiosis very irregular with univalents and chains of three
and/or five and possible six-chromosomes present in all cells. Hwy. 110;
11.5 mi west of Jalisco border. Warm sub-tropical area near km 209.
This large roadside population contained a mixture of white and
lavender-rayed forms of C. pacificus (67-259) and several of these
golden-yellow-rayed, acheneless C. pacificus X. C. sulphureus hybrids.
Unlike other C. exaristatus populations the white-rayed, not the lavender-
rayed, forms dominated this population.
Thomas E. Melchert, R. Ballard, C. Hart No. 71-260
Taxonomic Studies in the Coreopsidinae 26 Oct 1971
Herbarium of The University of Iowa
02714848