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Articles 91 - 120 of 260
Full-Text Articles in Botany
A List Of Arthropods Of Medical Importance Which Occur In Utah With A Review Of Arthropod-Borne Diseases Endemic In The State, Vernon J. Tipton, Robert C. Saunders
A List Of Arthropods Of Medical Importance Which Occur In Utah With A Review Of Arthropod-Borne Diseases Endemic In The State, Vernon J. Tipton, Robert C. Saunders
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 15 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 15 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 15 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Ticks Of Japan, Korea, And The Ryukyu Islands, Noboru Yamaguti, Vernon J. Tipton, Hugh L. Keegan, Seiichi Toshioka
Ticks Of Japan, Korea, And The Ryukyu Islands, Noboru Yamaguti, Vernon J. Tipton, Hugh L. Keegan, Seiichi Toshioka
Brigham Young University Science Bulletin, Biological Series
This publication is a revision of Ixodid Ticks of Japan, Korea, and the Ryukyu Islands by Keegan and Toshioka (1957). The tick fauna of these areas is represented by 36 species in the genera Argas, Ornithodoros, Amblyomma, Boophilus, Dermacentor, Haemaphysalis, Ixodes, and Rhipicephalus. Three species of the family Argasidae and 10 species of Ixodidae were not treated in the original edition. The additional information contained in this revision was derived from field collections and a thorough review of the literature. Keys are provided for the identification of genera and species. For each species we have given synonymy, a brief diagnosis, …
Botanical And Physiographic Reconnaissance Of Northern Yukon, Stanley L. Welsh, J. Keith Rigby
Botanical And Physiographic Reconnaissance Of Northern Yukon, Stanley L. Welsh, J. Keith Rigby
Brigham Young University Science Bulletin, Biological Series
The area of study is located in the northern panhandle of the Yukon Territory, and includes the British and Barn Mountains, Old Crow Flats, and the coastal plain of the north slope. The physiography and geology of the region is described and the plant communities are enumerated. An annotated list of 279 species, 15 subspecies, 63 varieties, and 1 form of vascular plants collected during the summer of 1970 is included.
End Matter, Vol. 14 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 14 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
The Myology Of Sceloporus C. Clarki Baird And Girard (Reptilia: Iguanidae), Diane Marie Secoy
The Myology Of Sceloporus C. Clarki Baird And Girard (Reptilia: Iguanidae), Diane Marie Secoy
Brigham Young University Science Bulletin, Biological Series
Examination of the complete musculature of Sceloporus clarki clarki Baird and Girard and seven other species of Sceloporus revealed variation among species of Sceloporus and between Sceloporus and other iguanid lizards. The muscles in which the greatest variation was found were the intermandibularis group, the constrictor colli, the episterno-cleido-mastoideus, the episternohyoideus, the coracoid head of the triceps, the costocoracoid and the flexor tibialis externus. This study indicates: (1) Sceloporus is more closely allied to Crotaphytus than to the ground-dwelling iguanines; (2) the possibility of the basal stock of Sceloporus being arboreal, and (3) Sceloporus is a genus in the process …
End Matter, Vol. 14 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 14 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 13 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 13 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 13 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 13 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
A Taxonomic Revision Of The Weevil Genus Tychius Germar In America North Of Mexico (Coleoptera: Curculionidae), Wayne E. Clark
A Taxonomic Revision Of The Weevil Genus Tychius Germar In America North Of Mexico (Coleoptera: Curculionidae), Wayne E. Clark
Brigham Young University Science Bulletin, Biological Series
A study of morphological characters of 4,000 adult weevils used in preparing a key and descriptions indicates there are fifteen North American species in the genus Tychius Germar. Adults occur on plants in the genera Astragalus, Baptisia, Hedysarum, Lotus, Lupinus, and Oxytropis.
The genus is divided into two species groups. The T. sordidus group appears to have representatives in the Old World fauna, but the T. semisquamosus group is probably native to North America. New names, Tychius caesius, and T. hirsutus are proposed for T. armatus Green, 1920 (not Tournier, 1873), and T. hirtellus LeConte, 1876 (not Tournier, 1873) respectively. …
Notes On Eriogonum - Vi : A Revision Of The Eriogonum Microthecum Complex (Polygonaceae), James L. Reveal
Notes On Eriogonum - Vi : A Revision Of The Eriogonum Microthecum Complex (Polygonaceae), James L. Reveal
Brigham Young University Science Bulletin, Biological Series
This revision discusses seven closely related species of Eriogonum (Polygonaceae) found in the western United States of North America. One of the two major species, E. microthecum, is composed of nine varieties which range over a wide area of the Far West. The other major species, E. effusum, is found over a more restrictive geographical range mainly east of the Continental Divide. The remaining five species are primarily restricted to the Colorado-Green river drainage basin of Utah, Colorado, New Mexico, and northern Arizona. Together these entities form the core of a group of plants known as Section Corymbosa. …
Front Matter, Vol. 13 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 13 No. 1
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
A Taxonomic Study Of Crotaphytus Collaris Between The Rio Grande And Colorado Rivers, William Ingram Iii, Wilmer W. Tanner
A Taxonomic Study Of Crotaphytus Collaris Between The Rio Grande And Colorado Rivers, William Ingram Iii, Wilmer W. Tanner
Brigham Young University Science Bulletin, Biological Series
Little work has been done previously on the taxonomy of Crotaphytus collaris baileyi. This and the demonstration by Fitch and Tanner that C. c. baileyi is a heterogeneous grouping prompted the present study. Only the populations of the type material, the Upper Colorado River Basin, and the Chihuahuan Desert were studied. Multivariate, variance, canonical and discriminant analyses of external characters were performed, and pattern-coloration characters were examined on living specimens.
The results of the analyses show significance between all three populations. The discriminant functions distinguished between the populations with 80% reliability and patternal characters were discriminatory with near 100% reliability. …
End Matter, Vol. 13 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 13 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
A Revision Of Cryptantha Subgenus Oreocarya, Larry C. Higgins
A Revision Of Cryptantha Subgenus Oreocarya, Larry C. Higgins
Brigham Young University Science Bulletin, Biological Series
This study is a taxonomic revision of Cryptantha subgenus Oreocarya (Boraginaceae), together with descriptions of species, synonyms, distribution maps, and discussions. The present treatment recognizes fifty-seven species and fourteen varieties, all separated by means of a comprehensive key, A history of the group, along with a discussion of distribution, ecology, and phylogeny is presented. As a basis for the comparison of taxa much of the research has been concentrated on morphological variation in herbarium specimens. Particular attention has been directed to a study of pubescence types, branching patterns, flowers, calyces, and fruit. The herbarium research has been correlated with extensive …
Land Use In Wah Wah And Pine Valleys, Western Utah, Joseph R. Murdock, Stanley L. Welsh
Land Use In Wah Wah And Pine Valleys, Western Utah, Joseph R. Murdock, Stanley L. Welsh
Brigham Young University Science Bulletin, Biological Series
This is a review of the use of public lands in Wah Wah and Pine Valleys in western Utah for grazing of livestock, mining, and other private enterprises. The total area of the two valleys is approximately 1,440 square miles of which about 30 square miles are privately owned. From the time grazing of domestic livestock was initiated in the 1870's and 1880's until 1934, the land was free public domain and was grazed on a first-come, first-served basis. Passage of the Taylor Grazing Act in 1934 ended free use of public lands. Existing evidence indicates that by 1934 the …
Evolution Of The Iguanine Lizards (Sauria, Iguanidae) As Determined By Osteological And Myological Characters, David F. Avery, Wilmer W. Tanner
Evolution Of The Iguanine Lizards (Sauria, Iguanidae) As Determined By Osteological And Myological Characters, David F. Avery, Wilmer W. Tanner
Brigham Young University Science Bulletin, Biological Series
The problem of phylogenic relationships within the iguanine phyletic line and the Madagascar iguanids have been investigated in order to explain the discontinuous distribution exhibited by the members of the family Iguanidae. Owing to inconclusive results from cytology and histological methods, the comparative morphology of the anterior osteology, myology, tongues, and hemipenes were used to determine relationships.
An examination of the above structures of the members of the iguanine phyletic lines and a comparison with the Madagascar iguanids indicates the following: ( 1 ) The Madagascar genera Chalarodon and Oplurus appear to be more closely related to each other than …
End Matter, Vol. 12 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 12 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Front Matter, Vol. 12 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 12 No. 3
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 12 No. 2
Brigham Young University Science Bulletin, Biological Series
No abstract provided.