| The specialized flora includes the rare plantain shoreweed, water lobelia, and quillwort. |
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| The taxonomy of quillwort species was obscured for many years before the phenomenon of interspecific hybridization was recognized. |
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| The other is a quillwort, or Isoetes, which reproduces through male and female spores and thus is considered more closely related to ferns than to flowering plants. |
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| Bolander's quillwort is a plant whose only known locations in Canada are in Waterton Lakes National Park. |
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| The lowest quillwort diversity is found in permanent ponds and streams of the Appalachian Mountains. |
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| Relationship between water chemistry and the distribution of the endangered aquatic quillwort Isoetes sinensis Palmer in China. |
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| Numerous sterile quillwort hybrids with abortive spores exist, and in some cases these hybrids have regained fertility through a process of chromosome doubling. |
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| Like ferns, quillwort reproduces by spores. |
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| The contact between the Hattiesburg Formation and Upland Complex appears to define the habitat of the Louisiana quillwort. |
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| Engelmann's quillwort, Isoetes engelmannii, an addition to the Flora of Canada. |
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| An increase in pollen and spores from wetland plants such as cattails, sphagnum, sedge and quillwort suggests that there was more moisture available at the bog site. |
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| Earliest Triassic origin of Isoites and quillwort evolutionary radiation. |
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