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S. laurentianum, the Gulf of St. Lawrence Aster, is an endemic aster of Prince Edward Island, New Brunswick, and the Magdalene Islands. It is considered by the Committee on the Status of Endangered Wildlife in Canada to be of special concern in Canada and to be critically imperiled in Prince Edward ...
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Explores aspects of floral development in Philodendron grandifolium and Philodendron megalophyllum. Initiation of pistillate and staminate flowers; Morphology of the mature flowers; Function of the presence of calcium oxalate crystals; Observations of the homeotic shift between carpels and staminode...
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This modification to the technique of epi-illumination light microscopy makes use of a new system of lenses that replaces expensive and not readily available dipping cone objectives. The newer objectives offer at least comparable resolution and depth of field, along with simple preparation procedure...
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The developmental morphology of shoots of Thuja occidentalis L. (eastern white cedar) was investigated using scanning electron microscopy to determine the pattern of initiation of two types of leaves characteristic of higher (third and above) order branches. The shoots of eastern white cedar are bil...
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Early development of the pinnately compound leaves of Murraya paniculata was studied using both epi-illumination and scanning electron microscopy as well as semithin plastic sectioning of the same specimens that were illustrated by means of epi-illumination. It is shown that morphological conclusion...
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The main goal of this study was to examine different phyllotactic patterns and pattern transitions in seedlings of eastern white cedar (Thuja occidentalis L.). Four phyllotactic patterns were observed on the main stem of T. occidentalis: tetracussate, tricussate, (3, 5) spiral, and decussate. Only o...
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The article discusses the carnivorous plant the Purple Pitcher Plant, or Sarracenia purpurea L., on Prince Edward Island. It focuses on research at the University of Prince Edward Island (UPEI) on the Purple Pitcher Plant, noting its presence in bogs such as the Glenfinnan Bog. The author comments o...
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Using scanning electron microscopy and thin sectioning, the functional morphology of the gynoecium, anthers, and pollen grains of Ruppia maritima, widgeon grass, were studied. The funnel-like arrangement of the carpels directing pollen to the stigmatic regions, the buoyancy offered by the presence o...
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The organogenesis of floral development in the dioecious clonal tree species Rhus hirta offers an excellent model system to study gender expression in dioecious plants. Pistillate and staminate flowers from developing inflorescences were collected from Grover Island, located off the northern shore o...
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