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Thalidomide, a current teratogen in South America.
Thalidomide, mainly used for the treatment of leprosy, is a current teratogen in South America, and it is reasonable to assume that at present this situation is affecting many births inExpand
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Pisos de vegetación de la Sierra de San Pedro Mártir, Baja California, México
A description of the belts of vegetation in Sierra de San Pedro Martir, Baja California, is made. Belts were discerned from aerial photographs and verified by field reconnaissance in which theExpand
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Abietane diterpenoids from Salvia pachyphylla and S. clevelandii with cytotoxic activity against human cancer cell lines.
A phytochemical study has been carried out on the aerial parts of Salvia pachyphylla and S. clevelandii. From S. pachyphylla, the known diterpenes carnosol (2), rosmanol, 20-deoxocarnosol (3),Expand
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Shrubland formations and associations in mediterranean-desert transitional zones of northwestern Baja California
The area between Ensenada and EI Rosario (Baja California, Mexico) has long been considered as a transitional zone in which two great ecoclimatic regions (Mediterranean and Tropical-Desert) overlap.Expand
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A phytosociological and phytogeographical survey of the coastal vegetation of western North America: beach and dune vegetation from Baja California to Alaska
Questions: What is the floristic composition of the plant communities that inhabit the beaches and dunes of the Pacific coast of North America? What are their ecological relationships in the zonalExpand
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A phytosociological and phytogeographical survey of the coastal vegetation of western North America. Part I: plant communities of Baja California, Mexico
Through tabular and average linkage cluster analyses, 737 phytosociological relevés were classified. Based on these relevés, we described and typified the associations, alliances, orders, and classesExpand
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Historical evidence of the Spanish introduction of date palm (Phoenix dactylifera L., Arecaceae) into the Americas
America’s date palm (Phoenix dactylifera L.) groves can be found from 36°N Lat. (USA) to 21°S Lat. (Chile) and from 63°W Long. (Venezuela) to 117°W Long. (USA), at elevations from sea level to 2,000Expand
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A Phytosociological Survey of the Chionophilous Communities of Western North America. Part II: Boreal Associations
To continue our study on the chionophilous communities of western North America, this report presents a phytosociological survey of communities growing in a boreal macroclimate. Combining theExpand
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Bioclimates and vegetation along the Pacific basin of Northwestern Mexico
We describe relationships between the bioclimates and vegetation of the northwest of Mexico, including the Baja California peninsula and the stretch of the Pacific basin between the states of SonoraExpand
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Statistical Measures of Fidelity Applied to Diagnostic Species in Plant Sociology
The idea of a diagnostic species is an important concept in plant sociology. However, since over a century ago, when the term “association” was introduced, the identification of diagnostic speciesExpand
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