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Articles 61 - 90 of 260
Full-Text Articles in Botany
New World Polyctenidae (Hemiptera), With Special Reference To Venezuelan Species, Norihiro Ueshima
New World Polyctenidae (Hemiptera), With Special Reference To Venezuelan Species, Norihiro Ueshima
Brigham Young University Science Bulletin, Biological Series
There are seven species of the polyctenid genus Hesperoctenes which occur in Venezuela. Six of these species are reported in this paper. H. longiceps (Waterhouse) is redescribed. Data on distribution and hosts and a key to the 15 species of the genus Hesperoctenes are given.
End Matter, Vol. 17 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 17 No. 5
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Ticks Of Venezuela (Acarina: Ixodoidea) With A Key To The Species Of Amblyomma In The Western Hemisphere, Eleanor K. Jones, Carleton M. Clifford, James E. Keirans, Glen M. Kohls
Ticks Of Venezuela (Acarina: Ixodoidea) With A Key To The Species Of Amblyomma In The Western Hemisphere, Eleanor K. Jones, Carleton M. Clifford, James E. Keirans, Glen M. Kohls
Brigham Young University Science Bulletin, Biological Series
Forty-nine species in 2 families and 10 genera are recorded for Venezuela. A key to the species of Amblyomma in the Western Hemisphere is given. Host and locality records are provided for each species. No new species are reported but the following 17 species are new for the fauna of Venezuela: Autricola silvai Cerný, 1967, Ornithodoros boliviensisO. brodyi Matheson, 1935, O. puertoricensis Fox, 1947, O. rossi Kohls, Sonenshine and Clifford, 1965, O. stageri Cooley and Kohls, 1941, O. yumatensis Cooley and Kohls, 1941, O. marinkellei Kohls and Clifford, 1969, O. viguerasi Cooley and Kohls, 1941, Amhblyomma extraoculatum Neumann, 1899, A. …
End Matter, Vol. 17 No. 6
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Venezuelan Nycteribiid Batflies (Diptera: Nycteribiidae), Lindolpho R. Guimarães
Venezuelan Nycteribiid Batflies (Diptera: Nycteribiidae), Lindolpho R. Guimarães
Brigham Young University Science Bulletin, Biological Series
Eleven species of Nycteribiidae, all belonging to the genus Basilia, are reported from Venezuela. Of these, two (tuttlei and typhlops) are described as new and four (anomala, dubia, juquiensis, and tiptoni) are recorded for the first time. B. anomala is the first species with three tergal plates to be found in South America. Synonymies, previous localities, and host records are given for all species, as well as new records and comments. Geographical distribution and host-parasite associations are discussed. Field parties of the Smithsonian Venezuelan Project obtained the material on which this paper is based.
Front Matter, Vol. 17 No. 5
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 16 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
The Boraginaceae Of Utah, Larry C. Higgins
The Boraginaceae Of Utah, Larry C. Higgins
Brigham Young University Science Bulletin, Biological Series
This paper presents a revision of the family Boraginaceae for the state of Utah. Ninety-three species in seventeen genera are recognized. The treatment includes keys, synonymy, descriptions, and citations of representative specimens found in the various herbaria in the state of Utah. The new combination Lappula occidentalis (Wats.) Greene var. cupulata (Gray) Higgins is presented.
End Matter, Vol. 16 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 16 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 16 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 16 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
The Hyobranchium And Throat Myology Of The Adult Ambystomidae Of The United States And Northern Mexico, John E. Krogh, Wilmer W. Tanner
The Hyobranchium And Throat Myology Of The Adult Ambystomidae Of The United States And Northern Mexico, John E. Krogh, Wilmer W. Tanner
Brigham Young University Science Bulletin, Biological Series
The 16 species and subspecies of the Ambystomidae of the United States are placed into six groups according to their throat morphology as follows: The Dicamptodon group, the Rhyacotriton group, the A. Annulatum–A. cingulatum group, the A. gracile-A. jeffersonianum-A. mabeei-A. macrodactylum-A. maculatum group, the A. talpoideum group, the A. opacum-A. texanum group, and the A. rosaceum-A. t. tigrinum-A. t. melanostictum-A. t. nebulosum group. Dicamptodon appears to be the most primitive group and Rhyacotriton the most specialized. Based on the morphology of the throat region it is suggested that A. rosaceum be placed in the tiger salamander group as a subspecies …
Front Matter, Vol. 16 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Understory Characteristics Related To Site Quality For Aspen In Utah, James H. Warner, Kimball T. Harper
Understory Characteristics Related To Site Quality For Aspen In Utah, James H. Warner, Kimball T. Harper
Brigham Young University Science Bulletin, Biological Series
An analysis has been made of the basic ecology of aspen forests of the mountainous areas of Utah and northern Arizona. Forty-nine study areas have been examined in respect to density, height and age of the tree cover, tree reproduction, and composition and biomass production of the understory. A graphic model of interspecific assocations among prevalent understory species has been prepared by a cluster-analysis procedure based on presence and absence of species in 1,225 small quadrats (0.25 m2) uniformly distributed among the 49 stands. The model separates species of relatively stable as opposed to rapidly seral aspen forests. …
End Matter, Vol. 16 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 15 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Ecology Of Sceloporus Occidentalis Longipes Baird And Uta Stansburiana Stansburiana Baird And Girard On Rainier Mesa, Nevada Test Site, Nye County, Nevada, Wilmer W. Tanner, James M. Hopkin
Ecology Of Sceloporus Occidentalis Longipes Baird And Uta Stansburiana Stansburiana Baird And Girard On Rainier Mesa, Nevada Test Site, Nye County, Nevada, Wilmer W. Tanner, James M. Hopkin
Brigham Young University Science Bulletin, Biological Series
This paper constitutes the first in a series of terminal reports to the United States Atomic Energy Commission for Contract AT (11–1) 1496. It includes a major study on the ecology and life history of Sceloporus occidentalis longipes Hollowell and a comparative study of three populations of Uta s. stansburiana Baird and Girard with special emphasis given for the Uta population on Rainier Mesa.
The study plot of major concern in this report is located on Rainier Mesa of the Nevada Test Site. Reports for other study plots (Frenchman's Flat–four study areas–and Mercury Valley ) will follow in the near …
End Matter, Vol. 15 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 15 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
New Records And Species Of Neotropical Bark Beetles (Scolytidae: Coleoptera) Part V, Stephen L. Wood
New Records And Species Of Neotropical Bark Beetles (Scolytidae: Coleoptera) Part V, Stephen L. Wood
Brigham Young University Science Bulletin, Biological Series
The tribe Carphodicticini, the genera Carphodicticus, Periocryphalus, and Phelloterus, and 101 species are described as new to science. Notes on the habits of Cladoctonus boliviae (Wood), Mimips mimicus Schedl, and Styphlosoma granulatum Blandford are included; and the female of Styphlosoma granulatum Blandford is described. The species new to science include the following: Phrixosoma crebrum, P. frustratum (Colombia), P. viriosum, Chramesus macrocornis, C. orinocensis, C. strigilis, C. imporcatus, C. impolitus, C. parcus, C. denticulatus, C. priscus, C. vinealis, C. solicitatus, C. peniculus, ChaetophJoeus andinus, Liparthrum carapae, L. meridensis (Venezuela), Pycnarthrum inornatum, Pyc. funerium, Pyc. perditum (Honduras), Pyc. fici (Honduras, Venezuela), Pyc. …
Front Matter, Vol. 15 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 14 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 14 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 14 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
A Flora From The Dakota Sandstone Formation (Cenomanian) Near Westwater, Grand County, Utah, Samuel R. Rushforth
A Flora From The Dakota Sandstone Formation (Cenomanian) Near Westwater, Grand County, Utah, Samuel R. Rushforth
Brigham Young University Science Bulletin, Biological Series
A Cretaceous (Cenomanian) flora from the Dakota Sandstone Formation near Westwater, Grand County, Utah contains an admixture of ferns and angiosperms. The ferns of this flora are representative of an older Jurassic-Wealden vegetational type, whereas the angiosperms are typical of the modern vegetational type. Species of Gleichenia and Matonidium and Astralopteris coloradica represent the dominant forms in this flora.
The Westwater flora contains fourteen genera including nineteen species and one variety. New species described from this flora include Asplenium dakotensis, Coniopteris westwaterensis and Ilex serrata.
Botanical And Physiographic Reconnaissance Of Northern British Columbia, Stanley L. Welsh, J. Keith Rigby
Botanical And Physiographic Reconnaissance Of Northern British Columbia, Stanley L. Welsh, J. Keith Rigby
Brigham Young University Science Bulletin, Biological Series
The area of study is located in northern central British Columbia and includes the Sustut Basin and surrounding mountains. The physiography and geology of the region is described and the plant communities are enumerated. An annotated list of 205 species, 11 subspecies, and 35 varieties collected during the summer of 1969 is included.
Front Matter, Vol. 14 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 15 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.