Difference between revisions of "Isoëtes lithophila"
Ann. Missouri Bot. Gard. 9: 135. 1922.
Common names: Rock quillwort
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> nearly globose, 2-lobed. <b>Leaves</b> deciduous, bright green, pale toward base, spirally arranged, to 12(–20) cm, pliant, gradually tapering to tip. <b>Velum</b> covering entire sporangium. <b>Sporangium</b> wall unpigmented. <b>Megaspores</b> light gray to gray-brown, 290–360 μm diam., obscurely rugulate with low ridges; girdle obscure. <b>Microspores</b> brown in mass, 30–33 μm, tuberculate to spinulose. <b>2n</b> = 22.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Spores mature in winter or spring. | ||
|habitat=Shallow depressions on granite outcrops | |habitat=Shallow depressions on granite outcrops | ||
|distribution=Tex. | |distribution=Tex. | ||
| − | |discussion=<p>Isoëtes lithophila is known from granite outcrops in Burnett, Mason, and Llano counties in south central Texas.</p><!-- | + | |discussion=<p><i>Isoëtes lithophila</i> is known from granite outcrops in Burnett, Mason, and Llano counties in south central Texas.</p><!-- |
--><p>Of conservation concern.</p> | --><p>Of conservation concern.</p> | ||
|tables= | |tables= | ||
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name=Isoëtes lithophila | name=Isoëtes lithophila | ||
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|authority=N. Pfeiffer | |authority=N. Pfeiffer | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Isoëtaceae | |family=Isoëtaceae | ||
| + | |phenology=Spores mature in winter or spring. | ||
|habitat=Shallow depressions on granite outcrops | |habitat=Shallow depressions on granite outcrops | ||
|distribution=Tex. | |distribution=Tex. | ||
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|publication year=1922 | |publication year=1922 | ||
|special status= | |special status= | ||
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|genus=Isoëtes | |genus=Isoëtes | ||
|species=Isoëtes lithophila | |species=Isoëtes lithophila | ||
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-->[[Category:Treatment]][[Category:Isoëtes]] | -->[[Category:Treatment]][[Category:Isoëtes]] | ||
Latest revision as of 21:24, 5 November 2020
Plants becoming terrestrial. Rootstock nearly globose, 2-lobed. Leaves deciduous, bright green, pale toward base, spirally arranged, to 12(–20) cm, pliant, gradually tapering to tip. Velum covering entire sporangium. Sporangium wall unpigmented. Megaspores light gray to gray-brown, 290–360 μm diam., obscurely rugulate with low ridges; girdle obscure. Microspores brown in mass, 30–33 μm, tuberculate to spinulose. 2n = 22.
Phenology: Spores mature in winter or spring.
Habitat: Shallow depressions on granite outcrops
Discussion
Isoëtes lithophila is known from granite outcrops in Burnett, Mason, and Llano counties in south central Texas.
Of conservation concern.
Selected References
None.
Lower Taxa
None.