Difference between revisions of "Isoëtes engelmannii"
Flora 29: 178. 1846.
Common names: Engelmann's quillwort
Synonyms: Isoëtes valida (Engelmann) Clute
Treatment appears in FNA Volume 2.
FNA>Volume Importer |
imported>Volume Importer |
||
| (7 intermediate revisions by 2 users not shown) | |||
| Line 12: | Line 12: | ||
|name=Isoëtes valida | |name=Isoëtes valida | ||
|authority=(Engelmann) Clute | |authority=(Engelmann) Clute | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Isoëtaceae;Isoëtes;Isoëtes engelmannii | |hierarchy=Isoëtaceae;Isoëtes;Isoëtes engelmannii | ||
| Line 20: | Line 21: | ||
}}<!-- | }}<!-- | ||
| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>aquatic, emergent. <b>Rootstock</b> nearly globose, 2-lobed. <b>Leaves</b> evergreen, bright green, pale toward base, spirally arranged, to 60(–90) cm, pliant, gradually tapering to tip. <b>Velum</b> covering less than 1/4 of sporangium. <b>Sporangium</b> wall usually unpigmented, occasionally ± brown-streaked. <b>Megaspores</b> white, 400–560 μm diam., reticulate, with unbroken lamellate ridges; girdle obscure. <b>Microspores</b> gray in mass, 20–30 μm, smooth to papillose. <b>2n</b> = 22.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Spores mature in summer. | ||
|habitat=Emergent or in shallow water of lakes, ponds, streams, and ditches | |habitat=Emergent or in shallow water of lakes, ponds, streams, and ditches | ||
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;Md.;Mass.;Mich.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va. | |distribution=Ont.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;Md.;Mass.;Mich.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va. | ||
| − | |discussion=<p>Isoëtes engelmannii is the most widely distributed quillwort of eastern North America. Plants with larger megaspores, ranging from 480–560 μm, have been called I. engelmannii var. georgiana Engelmann. This variety may represent a tetraploid cytotype. A tetraploid population of I. engelmannii (2n = 44) from northern Florida has larger megaspores characteristic of var. georgiana.</p><!-- | + | |discussion=<p><i>Isoëtes engelmannii</i> is the most widely distributed quillwort of eastern North America. Plants with larger megaspores, ranging from 480–560 μm, have been called <i>I. engelmannii</i> var. georgiana Engelmann. This variety may represent a tetraploid cytotype. A tetraploid population of <i>I. engelmannii</i> (2n = 44) from northern Florida has larger megaspores characteristic of var. georgiana.</p><!-- |
| − | --><p>Isoëtes engelmannii hybridizes with I. echinospora [ = I. x eatonii Dodge (later synonym = I. x gravesii A. A. Eaton); I. flaccida; I. tuckermanii [ = I. x foveolata A. A. Eaton ex Dodge]; I. lacustris; and I. riparia [ = I. x brittonii Brunton & W. C. Taylor].</p> | + | --><p><i>Isoëtes engelmannii</i> hybridizes with <i>I. echinospora</i> [ = I. x eatonii Dodge (later synonym = I. x gravesii A. A. Eaton); <i>I. flaccida</i>; <i>I. tuckermanii</i> [ = I. x foveolata A. A. Eaton ex Dodge]; <i>I. lacustris</i>; and <i>I. riparia</i> [ = I. x brittonii Brunton & W. C. Taylor].</p> |
|tables= | |tables= | ||
|references= | |references= | ||
| Line 35: | Line 37: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Isoëtes engelmannii | name=Isoëtes engelmannii | ||
| − | |||
|authority=A. Braun | |authority=A. Braun | ||
|rank=species | |rank=species | ||
| Line 42: | Line 43: | ||
|basionyms= | |basionyms= | ||
|family=Isoëtaceae | |family=Isoëtaceae | ||
| + | |phenology=Spores mature in summer. | ||
|habitat=Emergent or in shallow water of lakes, ponds, streams, and ditches | |habitat=Emergent or in shallow water of lakes, ponds, streams, and ditches | ||
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;Md.;Mass.;Mich.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va. | |distribution=Ont.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;Md.;Mass.;Mich.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va. | ||
| Line 48: | Line 50: | ||
|publication year=1846 | |publication year=1846 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_513.xml |
|genus=Isoëtes | |genus=Isoëtes | ||
|species=Isoëtes engelmannii | |species=Isoëtes engelmannii | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
}}<!-- | }}<!-- | ||
-->[[Category:Treatment]][[Category:Isoëtes]] | -->[[Category:Treatment]][[Category:Isoëtes]] | ||
Latest revision as of 21:23, 5 November 2020
Plants aquatic, emergent. Rootstock nearly globose, 2-lobed. Leaves evergreen, bright green, pale toward base, spirally arranged, to 60(–90) cm, pliant, gradually tapering to tip. Velum covering less than 1/4 of sporangium. Sporangium wall usually unpigmented, occasionally ± brown-streaked. Megaspores white, 400–560 μm diam., reticulate, with unbroken lamellate ridges; girdle obscure. Microspores gray in mass, 20–30 μm, smooth to papillose. 2n = 22.
Phenology: Spores mature in summer.
Habitat: Emergent or in shallow water of lakes, ponds, streams, and ditches
Distribution
Ont., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Ky., Md., Mass., Mich., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va.
Discussion
Isoëtes engelmannii is the most widely distributed quillwort of eastern North America. Plants with larger megaspores, ranging from 480–560 μm, have been called I. engelmannii var. georgiana Engelmann. This variety may represent a tetraploid cytotype. A tetraploid population of I. engelmannii (2n = 44) from northern Florida has larger megaspores characteristic of var. georgiana.
Isoëtes engelmannii hybridizes with I. echinospora [ = I. x eatonii Dodge (later synonym = I. x gravesii A. A. Eaton); I. flaccida; I. tuckermanii [ = I. x foveolata A. A. Eaton ex Dodge]; I. lacustris; and I. riparia [ = I. x brittonii Brunton & W. C. Taylor].
Selected References
None.
Lower Taxa
None.