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Articles 9001 - 9030 of 10755
Full-Text Articles in Botany
Scirpus Validus And S. Acutus: A Question Of Distinctness, Marlyn Miller, E. O. Beal
Scirpus Validus And S. Acutus: A Question Of Distinctness, Marlyn Miller, E. O. Beal
Journal of the Minnesota Academy of Science
An analysis of 32 populations of bulrushes in the Scirpus validus-acutus complex growing in Itasca State Park and prairie ponds to the west indicates that most of the populations are referable to neither S. validus nor S. acutus but, rather, are intermediate in morphology. Further, the supposedly characteristic features by which the two nomenclatural species have been identified are erratically correlated.
Pine Reproduction In Itasca State Park: Analysis In Moisture-Nutrient Coordinates, Vilis Kurmis, Henry L. Hansen
Pine Reproduction In Itasca State Park: Analysis In Moisture-Nutrient Coordinates, Vilis Kurmis, Henry L. Hansen
Journal of the Minnesota Academy of Science
Natural pine reproduction was studied in 36 forest communities representing the range of ecological variability of the upland forest in Itasca Park, Minnesota. The method of synecological coordinates was used to evaluate reproduction in relation to stand and site conditions. In the absence of fire, predominantly medium to nutrient-rich forest soils favor the growth of herbs, shrubs, and hardwoods under the open canopies of pine and aspen stands. There are very few red pine (Pinus resinosa Ait.) and jack pine (Pinus banksiana Lamb.) seedlings under these conditions, and growth of white pine (Pinus strobus L.) seedlings is severely restricted.
Size-Structure Correlation In Developing Roots Of Cissus And Syngonium, David L. Berquam
Size-Structure Correlation In Developing Roots Of Cissus And Syngonium, David L. Berquam
Journal of the Minnesota Academy of Science
The development of conducting tissues in relation to root size is examined in Cissus sicyoides L. and Syngonium podophyllum Engl. Evidence is presented that such relationships arise earlier in development than has hitherto been described. Their early appearance calls into question the hypothesis that such relationships reflect a solution to problems of water economy in mature tissues. While pattern determination in Syngonium is similar to that anticipated on the basis of published investigations, a new 'kind of size-structure correlation is identified in Cissus. In light of this fact, a need to broaden the philosophical bases for an interpretation of form …
Vegetation Survey Of Floodplain Forests Along The Wabash River, Philip E. Phillippe
Vegetation Survey Of Floodplain Forests Along The Wabash River, Philip E. Phillippe
Masters Theses
No abstract provided.
Woody Vegetation Survey Of Rocky Branch Nature Preserve, Clark County, Illinois, James T. Hughes
Woody Vegetation Survey Of Rocky Branch Nature Preserve, Clark County, Illinois, James T. Hughes
Masters Theses
No abstract provided.
Photoperiodism And Dormancy In Silver Maple Seedlings, Maria Regis Kilkenny
Photoperiodism And Dormancy In Silver Maple Seedlings, Maria Regis Kilkenny
Masters Theses
No abstract provided.
Old Field Succession In Pinellas County, Florida, Roger T. Poole
Old Field Succession In Pinellas County, Florida, Roger T. Poole
Masters Theses
No abstract provided.
Ethnobotanical Studies On Selected Plants Of Northeastern Mexico, Wayne M. Pichon
Ethnobotanical Studies On Selected Plants Of Northeastern Mexico, Wayne M. Pichon
Masters Theses
No abstract provided.
Broomsedge In Illinois, David F. Kunz
A Taxonomic Study Of The Marine Algae Of Netarts Bay, Oregon, Charles Jerome Kunert
A Taxonomic Study Of The Marine Algae Of Netarts Bay, Oregon, Charles Jerome Kunert
Dissertations and Theses
Gathering taxonomic data is fundamental to any biological or ecological research. It was the intent of this paper to increase the storehouse of taxonomic information by studying the marine algae of one section of the Oregon coastline. Netarts Bay was chosen because of its accessibility and generally primitive nature. It is in an area of Oregon largely untouched by phycologists and so offered an opportunity for original research.
Techniques of collecting and preserving specimens were kept as simple as possible, thus allowing a proportionately greater amount of the available time to be spent in the classification of the organisms. The …
Maclura Pomifera (Raf.) Schneid., Larry Dennis
Maclura Pomifera (Raf.) Schneid., Larry Dennis
Specimens by Name
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.
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist Vol. 3, Nos. 3 And 4. September-December, 1971
The Prairie Naturalist
EDITORIAL: Badlands-Old and New ▪ Paul B. Kannowski
SEASONAL INVESTIGATIONS OF ALGAE FROM DEVILS LAKE, NORTH DAKOTA ▪ Richard Verch and Dean W. Blinn
THE VASCULAR FLORA OF PEMBINA COUNTY, NORTH DAKOTA ▪ Rays E. Willenbring and William T. Barker
LET'S EAT WILD ▪ Alan M. Cvancara
SURF SCOTER IN NORTH DAKOTA ▪ Harold A. Kantrud
SNOW GOOSE-CANADA GOOSE HYBRIDS ▪ David C. McGlauchlin
NOTES
Cowbird parasitism of an upland plover nest ▪ Kenneth F. Higgins
Birds sighted within one hour from one observation point in Burleigh County, North Dakota ▪ William A. Buresh
Golden-winged warbler in Burleigh County, North …
The Useful Seed Plants And Plant Products Of Kenya, Elizabeth A. Muthiani
The Useful Seed Plants And Plant Products Of Kenya, Elizabeth A. Muthiani
Masters Theses
No abstract provided.
Penstemon In Your Garden [Revised], Roger D. Uhlinger, Glenn Viehmeyer
Penstemon In Your Garden [Revised], Roger D. Uhlinger, Glenn Viehmeyer
Department of Agronomy and Horticulture: Faculty Publications
The Genus Penstemon
Penstemon Breeding: Emasculation • Pollen Collection • Pollination • Keeping Records
Selection of ParentaI MateriaIs
Species Crosses
Breeding Behavior
Sources of Breeding Material
Penstemon Propagation: Propagation by Seed • Propagation by Division and Layering • Propagation by Cuttings • Tip Cuttings • Single Node and Single Eye Cuttings • Striking the Cuttings • Rooting Mediums • Setting the Cuttings
Penstemon Diseases : Leaf Diseases • Soil Borne Diseases • Virus Diseases
Insects that Affect Penstemon: Aphids • Cutworms • False Plant Bug • Flea Beetle • Grasshoppers • Leaf hoppers • Slugs • Red Spider Mites • …
Viola Striata Aiton, Loy R. Phillippe
Samolus Valerandi L., John E. Ebinger
Phoradendron Serotinum (Raf.) M.C. Johnston, Judy Damery Parrish
Phoradendron Serotinum (Raf.) M.C. Johnston, Judy Damery Parrish
Specimens by Name
No abstract provided.
Acer Negundo L., John E. Ebinger
Vitis Aestivalis F.Michx., John E. Ebinger
Acer Negundo L., John E. Ebinger
Acer Saccharum Marshall, Loy R. Phillippe
Vitis Riparia Michx., John E. Ebinger
Vitis Cinerea Noronha, Judy Damery Parrish
Bumelia Lanuginosa Pers., Judy Damery Parrish
Aplectrum Hyemale (Muhl. Ex Willd.) Torr., John E. Ebinger
Aplectrum Hyemale (Muhl. Ex Willd.) Torr., John E. Ebinger
Specimens by Name
No abstract provided.
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Phyla Lanceolata (Michx.) Greene, John E. Ebinger
Specimens by Name
No abstract provided.
Forestiera Acuminata (Michx.) Poir., Loy R. Phillippe
Forestiera Acuminata (Michx.) Poir., Loy R. Phillippe
Specimens by Name
No abstract provided.