Difference between revisions of "Isoëtes tegetiformans"
Ann. Missouri Bot. Gard. 68: 100. 1978.
Common names: Mat-forming Melin's grass
Treatment appears in FNA Volume 2.
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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> horizontally elongate, mat-forming, often proliferous. <b>Leaves</b> deciduous to nearly evergreen, bright green, pale toward base, distichously arranged, to 4 cm, pliant, gradually tapering to tip. <b>Velum</b> covering entire sporangium. <b>Sporangium</b> wall unpigmented. <b>Megaspores</b> dark gray, 275–370 μm diam., tuberculate with low and distinct tubercules; girdle obscure. <b>Microspores</b> brown in mass, 26–33 μm, spinulose. <b>2n</b> = 22.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Spores mature late winter and spring. | ||
|habitat=Shallow pools on granite outcrops | |habitat=Shallow pools on granite outcrops | ||
|distribution=Ga. | |distribution=Ga. | ||
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|basionyms= | |basionyms= | ||
|family=Isoëtaceae | |family=Isoëtaceae | ||
| + | |phenology=Spores mature late winter and spring. | ||
|habitat=Shallow pools on granite outcrops | |habitat=Shallow pools on granite outcrops | ||
|distribution=Ga. | |distribution=Ga. | ||
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|publication year=1978 | |publication year=1978 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_124.xml |
|genus=Isoëtes | |genus=Isoëtes | ||
|species=Isoëtes tegetiformans | |species=Isoëtes tegetiformans | ||
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-->[[Category:Treatment]][[Category:Isoëtes]] | -->[[Category:Treatment]][[Category:Isoëtes]] | ||
Revision as of 13:11, 27 July 2019
Plants becoming terrestrial. Rootstock horizontally elongate, mat-forming, often proliferous. Leaves deciduous to nearly evergreen, bright green, pale toward base, distichously arranged, to 4 cm, pliant, gradually tapering to tip. Velum covering entire sporangium. Sporangium wall unpigmented. Megaspores dark gray, 275–370 μm diam., tuberculate with low and distinct tubercules; girdle obscure. Microspores brown in mass, 26–33 μm, spinulose. 2n = 22.
Phenology: Spores mature late winter and spring.
Habitat: Shallow pools on granite outcrops
Discussion
Isoëtes tegetiformans is a unique mat-forming quillwort distinguished by its distichous leaf arrangement, horizontally elongate rootstock, and nondichotomous roots. (See discussion under I. melanospora.)
Of conservation concern.
Selected References
None.
Lower Taxa
None.