TITLE

MORFOLOGIA DE LOS GRANOS DE POLEN DE LA FAMILIA CISTACEAE DE MEXICO

AUTHOR(S)
Palacios-Chavez, Rodolfo; Quiroz Garcia, David Leonor; Arreguin-Sanchez, Ma. De La Luz
PUB. DATE
December 1999
SOURCE
Acta Botanica Mexicana;1999, Issue 49, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Pollen grains of two genera and twelve species (one with two varieties) belonging to Mexican members of the family Cistaceae are studied and illustrated. The taxa are: Helianthemum argenteum Hemsl., H. chihuahuense S. Wats., H. concolor (Riley) González-Ortega, H. coulteri S. Wats., H. glomeratum Lag., H. nutans Brandegee, H. patens Hemsl., H. pringlei S. Wats., H. pugae Calderón, H. scoparium var. aldersonii (Greene) Munz, H. scoparium var. vulgare Jepson, Lechea mucronata Raf. and L. tripetala (Moc. et Sessé) Britton. According to pollen characters two taxa can be differentiated, coinciding with the separation of Helianthemum and Lechea. At the species level within each genus, the species are very similar. All are reticulate and the diameter of lumina varies between 1 and 3 μ in Helianthemum, while that of Lechea measures less than 1 μ. The palynological characters of the Mexican plants considered as Helianthemum do not coincide with those refered in literature for the Old World species of that genus and differ also substantially from those reported for the members of Halimium and Crocanthemum.
ACCESSION #
20220781

 

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