|
Gayophytum Heterozygum
''Gayophytum heterozygum'' is a species of flowering plant in the evening primrose family known by the common name zigzag groundsmoke. It is native to the western United States where it grows mainly in forested mountain habitat. This is a spindly annual herb with a few forking branches which approaches 80 centimeters in maximum height. It has a sparse foliage of small, narrow leaves, most of which are on the lower half of the plant. It produces tiny white flowers toward the tops of the thin stems. The fruit is a lumpy-looking capsule. External linksJepson Manual Treatment heterozygum {{Myrtales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank Harlan Lewis
Frank Harlan Lewis (January 8, 1919 – December 12, 2008) was an American botanist, geneticist, taxonomist, systematist, and evolutionist who worked primarily with plants in the genus ''Clarkia''. He is best known for his theories of "catastrophic selection" and " saltational speciation", which are closely aligned with the concepts of quantum evolution and sympatric speciation. The concepts were first articulated in 1958 by Lewis and Peter H. Raven, and later refined in a 1962 paper by Lewis in which he coined the term "catastrophic selection". In 1966, he referred to the same mechanism as "saltational speciation". Lewis was Dean of Life Sciences at the University of California, Los Angeles from 1962 to 1981, a Fellow of the American Association for the Advancement of Science (1955), recipient of a Guggenheim Fellowship (1955), president of the Pacific Division of the Botanical Society of America (1959), president of the Society for the Study of Evolution (1961), president of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onagraceae
The Onagraceae are a family of flowering plants known as the willowherb family or evening primrose family. They include about 650 species of herbs, shrubs, and treesOnagraceae. Flora of China. in 17 genera. The family is widespread, occurring on every continent from boreal to regions. The family includes a number of popular plants, including evening primroses ('''') and [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |