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Full-Text Articles in Life Sciences
Pollen Morphology Of The New Species Mimulus Shevockii And A Possibly Related Species, M. Barbatus (Scrophulariaceae), Charles L. Argue
Pollen Morphology Of The New Species Mimulus Shevockii And A Possibly Related Species, M. Barbatus (Scrophulariaceae), Charles L. Argue
Journal of the Minnesota Academy of Science
The pollen grains of Mimulus shevockii and M barbatus have three long, equally spaced, meridionally oriented apertures with transversely ruptured membranes, and the pollen walls are microreticulate with smooth muri. The pollen evidence (pollen size and shape, rupturing pattern and ornamentation of the aperture membrane, size and spacing of lumina, and ornamentation of muri) is applied to comparisons between the pollen of M shevockii and that of other species in section Paradanthus. These data are consistent with a proposed relationship between M shevockii and M barbatus of the M rubellus/M palmeri group.
A Survey Of The Vascular Plants Of Norway Dunes, Janet Boe
A Survey Of The Vascular Plants Of Norway Dunes, Janet Boe
Journal of the Minnesota Academy of Science
Norway Dunes, a 320-acre preserve located in Kittson County, Minnesota, and owned by The Nature Conservancy, is named for the parabolic sand dunes found within its boundaries. These dunes are covered with oak sand savanna, a natural community that is threatened in Minnesota. This oak sand savanna harbors four plant species that are also threatened or of special concern in the state. A deciduous forest and four types of wetlands are other natural communities on the preserve. During a vascular plant survey of the tract, 207 species were collected. Some of these species represent range extensions within the state.
Additions And Confirmations To The Algal Flora Of Itasca State Park I. Desmids And Diatoms From North Deming Pond, Huan Ngo, Gerald W. Prescott, David B. Czarnecki
Additions And Confirmations To The Algal Flora Of Itasca State Park I. Desmids And Diatoms From North Deming Pond, Huan Ngo, Gerald W. Prescott, David B. Czarnecki
Journal of the Minnesota Academy of Science
The summer desmid and diatom flora of North Deming Pond in lake Itasca State Park is presented. One hundred sixty desmid taxa representing 23 genera are recorded. Of these, 15 taxa appear to be park records and 82 are apparently Minnesota records. The desmid genera, Closterium, Cosmarium, Euastrum, Micrasterias, Pleurotaenium, and Staurastrum display the most taxa. The 136 diatom taxa recorded represent 27 genera. More than half of the taxa are assignable to the genera Eunotia, Navicula, Neidium, and Pinnularia. Given the brief and cursory nature of this study, the taxomic representation of these algae indicates high species richness and …
Range Extensions For Orchis Spectabilis, Corallorhiza Trifida, And C. Striata In Minnesota, Charles I. Argue
Range Extensions For Orchis Spectabilis, Corallorhiza Trifida, And C. Striata In Minnesota, Charles I. Argue
Journal of the Minnesota Academy of Science
The Showy Orchis, the Striped Coral-root, and the Early Coral-root are reported as new additions to the orchid flora of Otter Tail County. The records for the first two species provide notable range extensions within Minnesota and represent, respectively, the most northern and southwestern localities thus far recorded for these species in the state
Growth And Mortality Of Shoots In Three Populations Of Typha Glauca Godr., John Michael Penko, Douglas C. Pratt
Growth And Mortality Of Shoots In Three Populations Of Typha Glauca Godr., John Michael Penko, Douglas C. Pratt
Journal of the Minnesota Academy of Science
A double sampling technique and permanent quadrats were used to monitor seasonal changes in shoot density and aboveground standing crop in three Minnesota Typha glauca populations. Shoot growth began several weeks later in stands located in floating mats (Boot Lake and Cedar Creek) relative to a nonfloating stand (Lauderdale). Mortality reduced shoot density by 10.8% at Boot Lake, 6.3% at Cedar Creek, and by 53% at Lauderdale. Shoot death was largely confined to smaller than average shoots at Boot Lake and Cedar Creek. At Lauderdale many relatively large shoots were killed by a lepidopteran stem borer (Archanara oblonga Grt.) or …