Palacios-Chavez, Rodolfo; Arreguin-Sanchez, Maria De La Luz; Quiroz-Garcia, David Leonor
March 1996
Acta Botanica Mexicana;1996, Issue 34, p1
Academic Journal
Pollen grain morphology of the families Acanthaceae, Vitaceae and Violaceae of the flora of the Valley of M�xico is studied and illustrated: the first family is represented by Acanthus mollis L., Anisacanthus quadrifidus (Vahl) Standl., Dicliptera peduncularis Nees, Dyschoriste decumbens (Gray) O. Ktze., D. microphylla (Cav.) O. Ktze., Justicia furcata Jacq., Pseuderanthemum praecox (Benth.) Leonard, Ruellia bourgaei Hemsl., R. lactea Cav., R. speciosa (Nees) Lindau, Stenandrium dulce (Cav.) Nees and Tetramerium nervosum Nees. Of the Vitaceae, pollen morphology of Cissus sicyoides L. and Vitis bourgeana Planchon, is described. Palynological keys for separation of genera and species of the Acanthaceae and Vitaceae are included. The Violaceae comprehend Hybanthus verticillatus (Ort.) Baill., H. verbenaceus (H.B.K.) Loes., Viola beamanii Calder�n, V. ciliata Schl., V. hemsleyana Calder�n, V. hookeriana H.B.K., V. humilis H.B.K., V. painteri Rose et House and V. umbraticola H.B.K. Pollen grains of this family are very uniform and therefore it is not possible to separate the taxa by palynological characteristics. Observations of pollen grains were carried out with light microscope and scanning electronic microscope.


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