Ontogeny of a new Palaeogene pipid frog from southern South America and xenopodinomorph evolution
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چکیده
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Isoetes pedersenii, a new species from Southern South America.
The name Isoetes pedersenii H.P. Fuchs (Lycophyta), a species known only from the Mburucuyá National Park, Corrientes, Argentina, is validated. Observations were carried out on herbarium material with stereoscopic, light and scanning electron microscopes. The species is described and typified. A diagnosis and discussion about its distribution and its relationship with the morphology of other sp...
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In a report on mosquito collections made during May 1982 from the area of Rincdn Del Tigre, southeastern Bolivia, Pey ton et al. (1983) listed and discussed a species of CuZex (MeZanoconion) near intrincatus Brsthes. They suggested that this species was very likely undescribed, but deferred judgment on the significance of noted differences in the male genitalia until a more detailed comparison ...
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With analyses of entire mitogenomes, studies of Native American mitochondrial DNA (MTDNA) variation have entered the final phase of phylogenetic refinement: the dissection of the founding haplogroups into clades that arose in America during and after human arrival and spread. Ages and geographic distributions of these clades could provide novel clues on the colonization processes of the differe...
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چکیده ندارد.
15 صفحه اولAllophylastrum: a new genus of Sapindaceae from northern South America
The new genus Allophylastrum (Sapindaceae) is described from Roraima, Brazil and Guyana. Allophylastrum resembles the genus Allophylus in its vegetative morphology but differs by its apetalous flowers with a cupular nectary disc, 5-6 unequal stamens, and 4- to 5- porate pollen grains. A key is provided to differentiate Allophylastrum from Allophylus. The new species Allophylastrum frutescens is...
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ژورنال
عنوان ژورنال: Zoological Journal of the Linnean Society
سال: 2003
ISSN: 1096-3642,0024-4082
DOI: 10.1046/j.1096-3642.2003.00085.x