Difference between revisions of "Isoëtes echinospora"
Bull. Soc. Bot. France 8:164. 1861.
Common names: Spiny-spored quillwort isoète à spores épineuses
Synonyms: Isoëtes braunii DurieuIsoëtes echinospospora subsp. muricata (Durieu) A. Löve & D. LöveIsoëtes echinospora var. boottii EngelmannIsoëtes echinospora var. braunii (Durieu) EngelmannIsoëtes echinospora var. muricata (Durieu) EngelmannIsoëtes muricata unknownIsoëtes setacea subsp. muricata (Durieu) Holub
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>usually aquatic, occasionally emergent. <b>Rootstock</b> nearly globose, 2-lobed. <b>Leaves</b> ± deciduous, bright green to reddish green, pale toward base, spirally arranged, to 25(–40) cm, pliant, gradually tapering toward tip. <b>Velum</b> covering less than 1/2 of sporangium. <b>Sporangium</b> wall ± brown-streaked. <b>Megaspores</b> white, 400–550 μm diam., echinate with thin, sharp spines; girdle obscure. <b>Microspores</b> gray to light brown in mass, 20–30 μm, smooth to spinulose. <b>2n</b> = 22.</span><!-- |
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| + | |phenology=Spores mature in late summer. | ||
|habitat=Emergent or in shallow, cool, oligotrophic water of slightly acidic lakes, ponds, and streams | |habitat=Emergent or in shallow, cool, oligotrophic water of slightly acidic lakes, ponds, and streams | ||
|distribution=Greenland;Alta.;B.C. Man.;N.B.;Nfld.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;N.H.;N.J.;N.Y.;Ohio;Oreg.;Pa.;R.I.;Utah;Vt.;Wash.;Wis.;circumboreal. | |distribution=Greenland;Alta.;B.C. Man.;N.B.;Nfld.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;N.H.;N.J.;N.Y.;Ohio;Oreg.;Pa.;R.I.;Utah;Vt.;Wash.;Wis.;circumboreal. | ||
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|basionyms= | |basionyms= | ||
|family=Isoëtaceae | |family=Isoëtaceae | ||
| + | |phenology=Spores mature in late summer. | ||
|habitat=Emergent or in shallow, cool, oligotrophic water of slightly acidic lakes, ponds, and streams | |habitat=Emergent or in shallow, cool, oligotrophic water of slightly acidic lakes, ponds, and streams | ||
|distribution=Greenland;Alta.;B.C. Man.;N.B.;Nfld.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;N.H.;N.J.;N.Y.;Ohio;Oreg.;Pa.;R.I.;Utah;Vt.;Wash.;Wis.;circumboreal. | |distribution=Greenland;Alta.;B.C. Man.;N.B.;Nfld.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;N.H.;N.J.;N.Y.;Ohio;Oreg.;Pa.;R.I.;Utah;Vt.;Wash.;Wis.;circumboreal. | ||
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|publication year=1861 | |publication year=1861 | ||
|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_152.xml |
|genus=Isoëtes | |genus=Isoëtes | ||
|species=Isoëtes echinospora | |species=Isoëtes echinospora | ||
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Revision as of 13:12, 27 July 2019
Plants usually aquatic, occasionally emergent. Rootstock nearly globose, 2-lobed. Leaves ± deciduous, bright green to reddish green, pale toward base, spirally arranged, to 25(–40) cm, pliant, gradually tapering toward tip. Velum covering less than 1/2 of sporangium. Sporangium wall ± brown-streaked. Megaspores white, 400–550 μm diam., echinate with thin, sharp spines; girdle obscure. Microspores gray to light brown in mass, 20–30 μm, smooth to spinulose. 2n = 22.
Phenology: Spores mature in late summer.
Habitat: Emergent or in shallow, cool, oligotrophic water of slightly acidic lakes, ponds, and streams
Distribution
Greenland, Alta., B.C. Man., N.B., Nfld., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Calif., Colo., Conn., Idaho, Maine, Mass., Mich., Minn., Mont., N.H., N.J., N.Y., Ohio, Oreg., Pa., R.I., Utah, Vt., Wash., Wis., circumboreal.
Discussion
North American plants of Isoëtes echinospora, which bear stomata, have been called I. muricata or I. echinospora var. braunii to distinguish them from European plants of I. echinospora, which do not have stomata.
Isoëtes echinospora is a distinct species but has considerable variation, especially in size, color, and form of leaves. It is the most commonly encountered quillwort in oligotrophic, noncalcareous lakes and ponds of northeastern North America.
Isoëtes echinospora hybridizes with I. bolanderi; I. engelmannii [ = I. x eatonii Dodge (later synonym = I. x gravesii A. A. Eaton)]; I. lacustris [ = I. x hickeyi Taylor & Luebke]; I. maritima; I. riparia [ = I. x dodgei A. A. Eaton]; and I. tuckermanii.
Selected References
None.
Lower Taxa
None.
... more about "Isoëtes echinospora"
Greenland +, Alta. +, B.C. Man. +, N.B. +, Nfld. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Calif. +, Colo. +, Conn. +, Idaho +, Maine +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.J. +, N.Y. +, Ohio +, Oreg. +, Pa. +, R.I. +, Utah +, Vt. +, Wash. +, Wis. + and circumboreal. +
Emergent or in shallow, cool, oligotrophic water of slightly acidic lakes, ponds, and streams +
Present +
Bull. Soc. Bot. France +
1861 +
Isoëtes echinospora +
Isoëtes +
species +