New combinations in Perymenium and Oteiza (Asteraceae-Heliantheae)
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چکیده
منابع مشابه
Perymenium Vandevenderorum ( Asteraceae ) , a New Species from Sonora , Mexico
A novel species of Perymenium from Sonora, Mexico is described. It appears to be closest to P. nesomii from southwestern Chihuahua, with which it is compared. A map showing distribution of the two taxa is provided.
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The relationships among the species of Balsamorhiza and Wyethia (Asteraceae: Heliantheae) were examined using data from the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA. The ITS sequences were obtained from nine species of Balsamorhiza and 14 species of Wyethia as well as seven outgroup genera. Five of the outgroup genera were members of the subtribe Engelmanniinae of t...
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Previous chromosomal studies within Melampodium (Asteraceae, Heliantheae) of Mexico and Central America have documented chromosome numbers n = 9, 10, 11, 12, 18, 20, 23, 25 ± 1, 27, 30, and 33. Some species also have been shown to exhibit infra- and interpopulational polyploidy. The presence of cytotype mixtures is especially pronounced in the white-rayed complex, which occurs in the southweste...
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Balsamorhiza and Wyethia together comprise 24 species native to western North America. All species in the two genera are perennial herbs with large taproots and chromosome base numbers of x 5 19. The species of Balsamorhiza have exclusively basal leaves while the species of Wyethia have cauline leaves (in addition to basal leaves in some species). The relationships among the species of Balsamor...
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ژورنال
عنوان ژورنال: Phytologia.
سال: 1975
ISSN: 0031-9430
DOI: 10.5962/bhl.part.12117