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Articles 1 - 9 of 9
Full-Text Articles in Life Sciences
The Challenge Of A Siberian Bluegrass (Poa) Phylogeny, Marina V. Olonova
The Challenge Of A Siberian Bluegrass (Poa) Phylogeny, Marina V. Olonova
Aliso: A Journal of Systematic and Floristic Botany
In Siberia, the bluegrass genus (Poa) comprises 43 species and 61 subspecies in 12 sections. Diverse modes of speciation, including polyploidy and hybridization, have led to reticulate evolution and adaptive radiation. Cladistic methods that ignore hybridization and reticulate evolution may not be appropriate for morphological data. The number of morphological characters suitable for bluegrass analysis is limited, a majority does not have clear adaptive significance, and the character states cannot be readily polarized, rendering phylogenetic reconstruction very difficult in this group. Other methods of estimating phylogenetic relationships should be used to test hypotheses about relationships and hybridization. Biochemical …
Two New Combinations In Western North American Asteraceae, David J. Keil
Two New Combinations In Western North American Asteraceae, David J. Keil
Aliso: A Journal of Systematic and Floristic Botany
Two new combinations that will be used in the second edition of The Jepson Manual are proposed for western North American Asteraceae: Helianthus petiolaris subsp. canescens and Cirsium scariosum var. loncholepis.
Vascular Plants Of The High Sierra San Pedro Mártir, Baja California, Mexico: An Annotated Checklist, Robert F. Thorne, Reid V. Moran, Richard A. Minnich
Vascular Plants Of The High Sierra San Pedro Mártir, Baja California, Mexico: An Annotated Checklist, Robert F. Thorne, Reid V. Moran, Richard A. Minnich
Aliso: A Journal of Systematic and Floristic Botany
The Sierra San Pedro Mártir (SSPM) is the highest mountain range in Baja California, Mexico, the summit of Picacho del Diablo peak attaining 3095 meters. An annotated checklist describes the vascular flora of the SSPM high country, defined here as above 1800 m. It comprises almost 500 species in 251 genera and 78 families. The high country is dominated by coniferous forest species known from montane California and Arizona whose southern ranges terminate in the SSPM. The annotated checklist identifies 453 species in 236 genera as indigenous, of which 23 species and one variety are endemic to the SSPM. Over …
A New Combination In Acmispon (Fabaceae: Loteae) For California, Luc Brouillet
A New Combination In Acmispon (Fabaceae: Loteae) For California, Luc Brouillet
Aliso: A Journal of Systematic and Floristic Botany
The new combination Acmispon argophyllus (A.Gray) Brouillet var. niveus (Greene) Brouillet is made.
Helianthus Inexpectatus (Asteraceae), A Tetraploid Perennial New Species From Southern California, David J. Keil, Mark A. Elvin
Helianthus Inexpectatus (Asteraceae), A Tetraploid Perennial New Species From Southern California, David J. Keil, Mark A. Elvin
Aliso: A Journal of Systematic and Floristic Botany
Helianthus inexpectatus is described as a new species from the Newhall Ranch of northern Los Angeles County, California. It is a tetraploid (2n = 68) perennial that is morphologically similar to--—and intermediate in some characters between--—the diploid H. nuttallii and the hexaploid H. californicus.
Nomenclatural Changes For Some Grasses In California And The Muhlenbergia Clade (Poaceae), J. Travis Columbus, James P. Smith Jr.
Nomenclatural Changes For Some Grasses In California And The Muhlenbergia Clade (Poaceae), J. Travis Columbus, James P. Smith Jr.
Aliso: A Journal of Systematic and Floristic Botany
New combinations and names are here validated for ten grass (Poaceae) taxa in California for the forthcoming revision of The Jepson Manual. In addition, guided by recent molecular phylogenetic studies, ten non-California grass species are here transferred to Muhlenbergia (Chloridoideae: Cynodonteae) to achieve monophyly of the genus. Lolium, long known to be phylogenetically nested within Festuca, is here subsumed into Festuca, and the circumscription of Stipa is expanded to include all Stipeae (native and non-native) in California. In Stipeae, most currently recognized genera are not monophyletic. Attaining monophyly while bearing in mind identification for persons not expert …
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Aliso: A Journal of Systematic and Floristic Botany
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