2012
DOI: 10.1007/s00606-011-0579-z
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Palynological study of the Venezuelan species of the genus Hymenocallis (Amaryllidaceae)

Abstract: Pollen morphology and exine structure of the seven Hymenocallis Salisb. species present in Venezuela were investigated using scanning (SEM) and transmission (TEM) electron microscopy. Pollen grains of all species are monosulcate, heteropolar, with bilateral symmetry, oblate to peroblate, heterobrochate, semitectate-columellate, possess unequal tectal surfaces, and are clavate or baculate when viewed with TEM. They present two equatorial apexes. When observed under SEM their surfaces appear as granulate; howeve… Show more

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Cited by 4 publications
(1 citation statement)
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“…Auriculate pollen grains are not common among extant plant taxa, and diverse Cretaceous pollen-bearing auriculate appendages have been variously described as gymnospermous and monocotyledonous (Elsik 1974). As the term "auriculae" is only applicable to the spores' structure (Punt et al 2007), the term "apex" has sometimes been used for these auriculalike pollen structures (see Martín et al 2012 for detailed terminological discussion).…”
Section: Discussionmentioning
confidence: 99%
“…Auriculate pollen grains are not common among extant plant taxa, and diverse Cretaceous pollen-bearing auriculate appendages have been variously described as gymnospermous and monocotyledonous (Elsik 1974). As the term "auriculae" is only applicable to the spores' structure (Punt et al 2007), the term "apex" has sometimes been used for these auriculalike pollen structures (see Martín et al 2012 for detailed terminological discussion).…”
Section: Discussionmentioning
confidence: 99%