A Field Guide to Southwestern and Texas Wildflowers by Theodore F. Niehaus PDF

By Theodore F. Niehaus

ISBN-10: 0395936128

ISBN-13: 9780395936122

Этот справочник охватывает 1505 видов дикорастущих цветов, группируя их по окраске и внешнему виду для облегчения сопоставления растений и их изображений. Книга содержит более 1500 иллюстраций.
Доп. информация: Файл является рипом с сайта Google Books. Этим определяется отсутствие некоторых страниц (до 20% от общего числа) и невысокое разрешение сканирования (около a hundred dpi).

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Example text

Some virologists favor using the English vernacular name as the official species name. g. with newly discovered viruses). Other virologists favor serial numbering for viruses (species). The experience of other groups of microbiologists is that, while n u m bering or lettering systems are easy to set up in the first instance, they lead to chaos as time passes and changes have to be made in taxonomic groupings. The idea of Latinized binomial names for viruses was supported by the ICTV for m a n y years but never implemented for any viruses.

Between 1940 and 1966, various schemes were proposed either for plant viruses only or for all viruses. None of these schemes was adopted by any significant number of virologists. It became increasingly apparent that a generally acceptable system of nomenclature and classification could be developed only through international co-operation and agreement, with the opinions of a majority of working virologists being taken into account. At the International Congress for Microbiology held in Moscow in 1966, the first meeting of the International Committee for the Nomenclature of Viruses was held, consisting of 43 people representing microbiological societies of many countries.

CdMV for Cardamom mosaic virus. 5. Abbreviations that use the same letters, but differ only by the case used (upper or lower), should be avoided. 6. Abbreviations for single w o r d s should not normally exceed two letters. 7. Secondary letters in abbreviations are omitted w h e n their use w o u l d make the abbreviation excessively long, generally more than five letters. For example, CGMMV is preferred to the longer CGMoMV, even though that complies with Guideline 1. 8. Abbreviations in current and widespread use are retained except Where their use could cause confusion.

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A Field Guide to Southwestern and Texas Wildflowers by Theodore F. Niehaus

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