Difference between revisions of "Isoëtes virginica"
Claytonia 3: 29. 1937.
Common names: Virginia quillwort
Synonyms: Isoëtes virginica var. piedmontana N. E. Pfeiffer Isoëtes piedmontana
Treatment appears in FNA Volume 2.
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|name=Isoëtes virginica var. piedmontana | |name=Isoëtes virginica var. piedmontana | ||
|authority=N. E. Pfeiffer | |authority=N. E. Pfeiffer | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Isoëtes piedmontana | |name=Isoëtes piedmontana | ||
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|hierarchy=Isoëtaceae;Isoëtes;Isoëtes virginica | |hierarchy=Isoëtaceae;Isoëtes;Isoëtes virginica | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>becoming terrestrial. <b>Rootstock</b> nearly globose, 2-lobed. <b>Leaves</b> deciduous, dull green, pale to dark brown toward base, spirally arranged, less than 30 cm, pliant, gradually tapering to tip. <b>Velum</b> covering less than 1/3 of sporangium. <b>Sporangium</b> wall brown-streaked to completely brown. <b>Megaspores</b> white, 400–480 μm diam., boldly tuberculate to rugulate with cristate, occasionally branched to anastomosing ridges; girdle obscure. <b>Microspores</b> light brown in mass, 27–33 μm, spinulose. <b>2n</b> = 22, 44.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Spores mature late in spring–early summer. | ||
|habitat=Mud flats and depressions on and around granite outcrops | |habitat=Mud flats and depressions on and around granite outcrops | ||
|distribution=Ala.;Ga.;S.C.;Va. | |distribution=Ala.;Ga.;S.C.;Va. | ||
| − | |discussion=<p>Short plants with 15 to 50 leaves and a tendency toward lower and more open megaspore ornamentation have been called Isoëtes virginica var. piedmontana Pfeiffer.</p> | + | |discussion=<p>Short plants with 15 to 50 leaves and a tendency toward lower and more open megaspore ornamentation have been called <i>Isoëtes virginica</i> var. piedmontana Pfeiffer.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Isoëtes virginica | name=Isoëtes virginica | ||
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|authority=N. E. Pfeiffer | |authority=N. E. Pfeiffer | ||
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|basionyms= | |basionyms= | ||
|family=Isoëtaceae | |family=Isoëtaceae | ||
| + | |phenology=Spores mature late in spring–early summer. | ||
|habitat=Mud flats and depressions on and around granite outcrops | |habitat=Mud flats and depressions on and around granite outcrops | ||
|distribution=Ala.;Ga.;S.C.;Va. | |distribution=Ala.;Ga.;S.C.;Va. | ||
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|publication year=1937 | |publication year=1937 | ||
|special status= | |special status= | ||
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|genus=Isoëtes | |genus=Isoëtes | ||
|species=Isoëtes virginica | |species=Isoëtes virginica | ||
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Latest revision as of 21:22, 5 November 2020
Plants becoming terrestrial. Rootstock nearly globose, 2-lobed. Leaves deciduous, dull green, pale to dark brown toward base, spirally arranged, less than 30 cm, pliant, gradually tapering to tip. Velum covering less than 1/3 of sporangium. Sporangium wall brown-streaked to completely brown. Megaspores white, 400–480 μm diam., boldly tuberculate to rugulate with cristate, occasionally branched to anastomosing ridges; girdle obscure. Microspores light brown in mass, 27–33 μm, spinulose. 2n = 22, 44.
Phenology: Spores mature late in spring–early summer.
Habitat: Mud flats and depressions on and around granite outcrops
Distribution
Ala., Ga., S.C., Va.
Discussion
Short plants with 15 to 50 leaves and a tendency toward lower and more open megaspore ornamentation have been called Isoëtes virginica var. piedmontana Pfeiffer.
Selected References
None.
Lower Taxa
None.