TITLE

MORFOLOGIA DE LOS GRANOS DE POLEN DE LAS FAMILIAS ACERACEAE, AQUIFOLIACEAE, GERANIACEAE, RESEDACEAE, SABIACEAE Y SAXIFRAGACEAE DEL VALLE DE MEXICO1

AUTHOR(S)
Arreguin-Sanchez, Ma. De La Luz; Quiroz-Garcia, David Leonor; Palacios-Chavez, Rodolfo
PUB. DATE
July 1990
SOURCE
Acta Botanica Mexicana;jul1990, Issue 10, p3
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Pollen grains morphology of the following members of the flora of the Valley of Mexico is studied and illustrated: family Aceraceae, represented by Acer negundo L. and A. negundo var. mexicanum (DC.) Standl. & Steyerm.; family Aquifoliaceae by liex tolucana Hemsl.; family Geraniaceae with 2 genera and 11 species: Erodium cicutarium (L.) L'H�rit., E. moschatum (L.) L'H�rit., Geranium aristisepalum Moore, G. bellum Rose, G. cruceroense Knuth, G. latum Small, G. lilacinum Knuth, G. lozani Rose, G. potentillaefolium, DC., G schiedeanum Schl. y G. seemannii Peyr. Pollen grains of Geraniaceae family can be separated on generic level, but differentiation of species is very difficult, in the genus Erodium it is not possible to separate the two species studied and, in Geranium differences in the ornamentation allow the recognition of two pollen groups: Geronium lozani, G. potenlillaefolium, G. seemannii, G. schiedeanum, G. bellum, G. cruceroense and G. litacinum have pollen grains with baculae of uniform size; in G. aristisepalum and G. latum the baculae are of two different sizes. The following families are also treated: Resedaceae, represented by Reseda luteola L.; Sabiaceae, by Meliosma dentata (Liebm.) Urban; and Saxifragaceae, by Heuchera orizabensis Hemsl., Philadelphus mexicanus Schl., Ribes affine H.B.K., R. ciliatum H.B.K. and R. microphyllum H.B.K. In the Ssxifragaceae, pollen grains of Heuchera and Philadelphus are similar but those of Ribes are very different. The observations of pollen grains were carried out with SEM and ML.
ACCESSION #
21367160

 

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