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Articles 9691 - 9720 of 10756
Full-Text Articles in Botany
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Specimens by Name
No abstract provided.
Corallorhiza Odontorhiza Nutt., John E. Ebinger
Corallorhiza Odontorhiza Nutt., John E. Ebinger
Specimens by Name
No abstract provided.
Maclura Pomifera (Raf.) Schneid., John E. Ebinger
Maclura Pomifera (Raf.) Schneid., John E. Ebinger
Specimens by Name
No abstract provided.
Verbena Urticifolia L., John E. Ebinger
Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger
Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger
Specimens by Name
No abstract provided.
Vitis Riparia Michx., John E. Ebinger
Morus Alba Var. Alba, John E. Ebinger
Acer Rubrum Wats., John E. Ebinger
Maclura Pomifera (Raf.) Schneid., John E. Ebinger
Maclura Pomifera (Raf.) Schneid., John E. Ebinger
Specimens by Name
No abstract provided.
Morus Rubra L., John E. Ebinger
Verbena Urticifolia L., John E. Ebinger
Vitis Vulpina L., John E. Ebinger
Acer Saccharum Marshall, John E. Ebinger
Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger
Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger
Specimens by Name
No abstract provided.
Comptonia Peregrina (L.) J.M. Coult., John E. Ebinger
Comptonia Peregrina (L.) J.M. Coult., John E. Ebinger
Specimens by Name
No abstract provided.
The Sphaerodactylus Decoratus Complex In The West Indies, Richard Thomas, Albert Schwartz
The Sphaerodactylus Decoratus Complex In The West Indies, Richard Thomas, Albert Schwartz
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
End Matter, Vol. 7 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Isolation Of A Toxic Substance From Centaurea Repens, Merton E. Sprengel
Isolation Of A Toxic Substance From Centaurea Repens, Merton E. Sprengel
Loma Linda University Electronic Theses, Dissertations & Projects
A poisonous steroid-type compound was isolated from Centaurea repens. After extraction with absolute ethanol, removal of the solvent, addition of 2% HCl to precipitate the pigments, and filtering, the pH was adjusted to 9 with aqueous anunonia. This solution was exhaustively extracted with chloroform, evaporated to dryness, and extracted with ethyl ether.
This fraction was chromatographed on silica-gel plates, using 10:1 1,2-dichloroethane-methanol as the developer. The band at Rf 4.2 was removed and found toxic to mice. Labored, slow, gasping respiration and frequent involuntary muscular contractions became apparent within a few minutes following the intraperitoneal injection into each animal. Death …
Front Matter, Vol. 7 No. 4
Brigham Young University Science Bulletin, Biological Series
No abstract provided.
Phyla Lanceolata (Michx.) Greene, Ben L. Dolbeare
Phyla Lanceolata (Michx.) Greene, Ben L. Dolbeare
Specimens by Name
No abstract provided.
Phyla Lanceolata (Michx.) Greene, Bart Moore
Verbena Urticifolia L., Bart Moore
Verbena Stricta Vent., L. Kloker
Lysimachia Lanceolata Walter, Bart Moore
Lysimachia Fraseri Duby, W. E. Hopkins
Verbena Bracteata Lag. & Rodr., W. Mcclain
Viola Striata Aiton, Bart Moore
Dodecatheon Meadia L., Ben L. Dolbeare
Phoradendron Bolleanum Var. Densum (Torr. Ex Trel.) Fosberg, Thiessen, Balenzuela, Sims
Phoradendron Bolleanum Var. Densum (Torr. Ex Trel.) Fosberg, Thiessen, Balenzuela, Sims
Specimens by Name
No abstract provided.
Spiranthes Vernalis Engelm. & A. Gray, Charles B. Arzeni, L. Porch, W. M. Zales
Spiranthes Vernalis Engelm. & A. Gray, Charles B. Arzeni, L. Porch, W. M. Zales
Specimens by Name
No abstract provided.