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(Vol. 01, 1998-05) A New Species of Ageratina (Asteraceae: Eupatorieae) from Northwestern Oaxaca
Fieldwork in connection with the project to document the flora of the Mixteca Alta region of the state of Oaxaca has resulted in the discovery of a new species in the district of Juxtlahuaca, Ageratina juxtlahuacensis. Its ...
(Vol. 01, 1998-05) Systematic Implications of DNA Restriction Site Variation In Hymenoxys and Tetraneuris (Asteraceae, Helenieae, Gaillardiinae)
Generic delimitation in the Hymenoxys complex has long been problematic. One taxonomic extreme would recognize only Hymenoxys, whereas the other would split the obviously related taxa into as many as eight genera. This ...