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Articles 7291 - 7320 of 10759
Full-Text Articles in Botany
Astralagus Ertterae (Fabaceae), A New Species From The Southern Sierra Nevada, Rupert C. Barneby, James R. Shevock
Astralagus Ertterae (Fabaceae), A New Species From The Southern Sierra Nevada, Rupert C. Barneby, James R. Shevock
Aliso: A Journal of Systematic and Floristic Botany
Astragalus ertterae, a new species from pinyon pine woodlands, southern Sierra Nevada, Kern County, California, is described and illustrated. This remarkable new species is morphologically closest to A. bicristatus in sect. Bicristati but differs in its dwarf stature, pilose indumentum, short peduncles, somewhat smaller flowers, and especially in a pod only half as long and proportionately twice as plump.
More New Astragali From Turkey, Kit Tan, F. Sorger
More New Astragali From Turkey, Kit Tan, F. Sorger
Aliso: A Journal of Systematic and Floristic Botany
Nine new species of Astragalus representing four sections of the genus are described from central, south and east Anatolia and illustrated.
Brongniartia Sousae (Fabaceae: Fabiodeae), A New Species From The Isthmus Of Tehuantepec, Oaxaca Mexico, Oscar Dorado
Brongniartia Sousae (Fabaceae: Fabiodeae), A New Species From The Isthmus Of Tehuantepec, Oaxaca Mexico, Oscar Dorado
Aliso: A Journal of Systematic and Floristic Botany
A new species, Brongniarlia sousae, endemic to the region of Tehuantepec, Oaxaca, Mexico, is described and illustrated. Its affinities with B. parvifolia Rose are discussed and habitat data are given.
Nothoscordum Montveidense Sensu Lato: New Polyploid Cototypes From Argentina, Leopoldo Montes, Maria Celia Nuciari, Raúl Horacio Rodríguez
Nothoscordum Montveidense Sensu Lato: New Polyploid Cototypes From Argentina, Leopoldo Montes, Maria Celia Nuciari, Raúl Horacio Rodríguez
Aliso: A Journal of Systematic and Floristic Botany
Two natural cytotypes of the Nothoscordum montevidense complex are described for the southeastern region of Buenos Aires province, Argentina. The cytotypes are 2n = 6x = 24 and 2n = 8x = 32 with metacentric chromosomes (m). Cytological and morphological evidence indicates that these cytotypes belong to N. montevidense ssp. latitepalum, although this subspecies is 2n = 4x = 16m. The probable origin of these cytotypes is discussed.
Chromosome Numbers And Evolution In Anoda And Periptera (Malvaceae), David M. Bates
Chromosome Numbers And Evolution In Anoda And Periptera (Malvaceae), David M. Bates
Aliso: A Journal of Systematic and Floristic Botany
Relationships within and between the principally North American, malvaceous genera Anoda and Periptera are assessed through analysis of chromosomal and hybridization data. Chromosome numbers are reported for ten species of Anoda and one of Periptera, and observations on meiosis in hybrid and non hybrid plants are presented. The results indicate: I) that Anoda and Periptera are closely related and occupy a relatively isolated position in the tribe Malveae, 2) that speciation in Anoda has occurred primarily at the diploid level, n = 15 , although A. crenatiflora is tetraploid and A. cristata includes diploids, tetraploids, and hexapJoids, and 3) that …
Key To Subject Areas, Stephen L. Wood, Donald E. Bright Jr.
Key To Subject Areas, Stephen L. Wood, Donald E. Bright Jr.
Great Basin Naturalist Memoirs
No abstract provided.
Acknowledgments, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Acknowledgments, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
General References, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
General References, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
Group Tracheophyta – Vascular Plants: Key To The Divisions And Classes, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Group Tracheophyta – Vascular Plants: Key To The Divisions And Classes, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
Author Abbreviations, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Author Abbreviations, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
E–H, Stephen L. Wood, Donald E. Bright Jr.
E–H, Stephen L. Wood, Donald E. Bright Jr.
Great Basin Naturalist Memoirs
No abstract provided.
R–S, Stephen L. Wood, Donald E. Bright Jr.
R–S, Stephen L. Wood, Donald E. Bright Jr.
Great Basin Naturalist Memoirs
No abstract provided.
Pollination Ecology In The Southwest, Beryl B. Simpson, John L. Neff
Pollination Ecology In The Southwest, Beryl B. Simpson, John L. Neff
Aliso: A Journal of Systematic and Floristic Botany
Comparisons of the pollination biology of members of a number of genera (Prosopis, Helianthus, Opuntia, and Krameria) widespread in the arid American Southwest are made between sites in the Sonoran Desert of southern Arizona and the dry oak-juniper grasslands of central Texas. As in the majority of cases studied to date in the dry regions of the Southwest, solitary bees are the dominant pollinators in all of the systems examined. Rich arrays of oligolectic bees are associated with Prosopis, Helianthus, and Opuntia, but none with Krameria which offers oils rather than pollen and nectar …
Diagonal And Tangential Vessel Aggregations In Wood: Function And Relationship To Vasecentric Tracheids, Sherwin Carlquist
Diagonal And Tangential Vessel Aggregations In Wood: Function And Relationship To Vasecentric Tracheids, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
The list of families with diagonal ("dendritic" or " flamelike" of other authors) patterns of vessel aggregation is similar to the list of families that have vasicentric tracheids. This paper attempts to deal with apparent exceptions. Because of recent reports of vasicentric tracheids, the families with diagonal vessel aggregations are all also on the list of families with vasicentric tracheids with the exception of four families. Genera of those four families are studied to see if a relationship between vasicentric tracheids and diagonal vessel aggregations does hold. Of the families not on both lists, Leitneriaceae (Leitneria), Melastomataceae ( …
Revision Of The Genus Anoda (Malvaceae), Paul A. Fryxell
Revision Of The Genus Anoda (Malvaceae), Paul A. Fryxell
Aliso: A Journal of Systematic and Floristic Botany
A revision of the genus Anoda is presented that recognizes 23 species, of which ten are described as new. The genus includes annual herbs, subshrubs, and occasionally shrubs and occurs from the southern United States to Bolivia, Argentina, and Chile. Most of this distributional range, however, is accounted for by a single species, A. cristata, which also occurs as an adventive in a few other parts of the world. The genus is principally Mexican, all of the species occurring within that country. Anoda is closely allied to the genus Periptera, also a Mexican genus, and the two genera share …
Wood Anatomy Of Placothira (Loasaceae), Sherwin Carlquist
Wood Anatomy Of Placothira (Loasaceae), Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Wood anatomy of the single species of Plakothira, a recently discovered genus from the Marquesas Islands, is described qualitatively and quantitatively. Features new for the family include presence of vasicentric scanty axial parenchyma and presence of perforated ray cells. Plakothira has several wood features specialized for Loasaceae: vasicentric axial parenchyma, extremely reduced borders on fibertracheids, and storying in fiber-tracheids. Wood of Plakothira is clearly loasaceous. Storying in fibertracheids is reported here for the loasaceous genera Fuertesia and Mentzelia. Wood anatomy of Plakothira represents paedomorphosis in great length of vessel elements, erectness of ray cells, lack of change in large primary …
M–Q, Stephen L. Wood, Donald E. Bright Jr.
M–Q, Stephen L. Wood, Donald E. Bright Jr.
Great Basin Naturalist Memoirs
No abstract provided.
New Or Noteworthy Species Of Flowering Plants From The Sierra Madre De Sur Of Guerrero And Michoacán, Mexico, Paul A. Fryxell, Stephen D. Koch
New Or Noteworthy Species Of Flowering Plants From The Sierra Madre De Sur Of Guerrero And Michoacán, Mexico, Paul A. Fryxell, Stephen D. Koch
Aliso: A Journal of Systematic and Floristic Botany
The Sierra Madre del Sur of Pacific coastal Mexico has been of limited accessibility and therefore not well explored botanically. Only G. B. Hinton and E. Langlasse have made significant collections from the area. More recent collections by the authors have resulted in the recognition of nine new species, described herein as follows: Acanthaceae—Elytraria rnexieana; Malvaceae—Bastardiastrurn batesii, Gossypiurn schwendirnanii, Hibiscus zygornorphus, Kosteletzkya flavicentrum, Periptera lobelioides, Sida fastuosa, and Sida prolifiea; and Tumeraceae—Piriquetia mexieana. Other species meriting specific comment include Dioseorea insignis (Dioscoreaceae), Anotea flavida (Malvaceae), and Helieteres rekoi …
New County Records Of Arkansas Vascular Flora From The University Of Central Arkansas Herbarium, Donald E. Culwell
New County Records Of Arkansas Vascular Flora From The University Of Central Arkansas Herbarium, Donald E. Culwell
Journal of the Arkansas Academy of Science
No abstract provided.
Status Report Of The Fern Woodsia Scopulina In Arkansas, James H. Peck, Carol J. Peck
Status Report Of The Fern Woodsia Scopulina In Arkansas, James H. Peck, Carol J. Peck
Journal of the Arkansas Academy of Science
No abstract provided.
New Locations For Pondberry (Lindera Melissifolia) In Arkansas, Edward Leon Richards
New Locations For Pondberry (Lindera Melissifolia) In Arkansas, Edward Leon Richards
Journal of the Arkansas Academy of Science
No abstract provided.
Introduction, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Introduction, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
Index, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Index, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
Division Magnoliophyta – Class Magnoliopsida, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Division Magnoliophyta – Class Magnoliopsida, Stanley L. Welsh, N. Duane Atwood, Sherel Goodrich, Larry C. Higgins
Great Basin Naturalist Memoirs
No abstract provided.
A Taxonomic Re-Evaluation Of Specimens Of The Genus Caloplaca In The E.L. Stover Herbarium Of Eastern Illinois University, Eric J. Cameron
A Taxonomic Re-Evaluation Of Specimens Of The Genus Caloplaca In The E.L. Stover Herbarium Of Eastern Illinois University, Eric J. Cameron
Masters Theses
The genus Caloplaca is the largest genus in the family Teloschistaceae. The 103 species in the genus greatly outnumber any other in the family. Lichens of the genus Caloplaca are usually orange to orange-yellow in color, and range from crustose to subfoliose in form. The orange color is due to an anthraquinone, parietin, the location of which is taxonomically important in this genus of lichens. In some species it occurs only in the apothecia, while in others it is found in both the apothecia and thallus. The spores of this genus are polarilocular, and the width of the isthmus is …
Discovery Of Lycopodium Communities In The Gulf Coastal Plain Region Of Arkansas, James H. Peck, Carol J. Peck, Steve L. Orzell, Edwin Bridges, Carl Amason
Discovery Of Lycopodium Communities In The Gulf Coastal Plain Region Of Arkansas, James H. Peck, Carol J. Peck, Steve L. Orzell, Edwin Bridges, Carl Amason
Journal of the Arkansas Academy of Science
No abstract provided.
Pliocene Nothofagus Wood From The Transantarctic Mountains, Sherwin Carlquist
Pliocene Nothofagus Wood From The Transantarctic Mountains, Sherwin Carlquist
Aliso: A Journal of Systematic and Floristic Botany
Subfossil wood fragments up to 10 cm long and 2 cm in diameter recovered from a locality thought on the basis of diatom deposits to be upper Pliocene-lower Pleistocene (Oliver Bluffs, Sirius Formation, 85°10'S., between 1800 and 1900 m in the Transantarctic Mountains) were sectioned for identification. Degradation prevented observation of some wood features, but others were well preserved. All of the fragments appear to represent one species. Features of growth rings (ring porous, vessels mostly solitary in earlywood), rays (predominantly uniseriate, both erect and procumbent cells common), vessel perforation plates (simple, at least in earlywood), lateral wall pitting of …
New Species, Combinations, And Notes In Ipomopsis (Polemoniaceae), James Henrickson
New Species, Combinations, And Notes In Ipomopsis (Polemoniaceae), James Henrickson
Aliso: A Journal of Systematic and Floristic Botany
Ipomopsis wendtii and Ipomopsis aggregata subsp. carmenensis are described as new from the Sierra del Jardín and Sierra del Carmen in northern Coahuila, Mexico, Ipomopsis pringlei is recognized as specifically distinct from Ipomopsis macombii. Gilia calothrysa is considered synonymous with I. macombii, and Ipomopsis effusa is reported as new to the floras of California and the United States.