Difference between revisions of "Equisetum ×litorale"
Beitr. Pflanzenk. Russ. Reiches 4: 91. 1845.
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GeoffLevin (talk | contribs) (Added Nunavut to distribution; treatment was published before Nunavut split from N.W.T.) |
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|habitat=Ditches, stream banks, wet meadows | |habitat=Ditches, stream banks, wet meadows | ||
|elevation=0–1000 m | |elevation=0–1000 m | ||
| − | |distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo. | + | |distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo. |
|discussion=<p><i>Equisetum</i> × <i>litorale</i> is a hybrid between <i>E. arvense</i> and <i>E. fluviatile</i>. It should be expected where the parents coexist. This hybrid has been mistaken for <i>Equisetum palustre</i>; the solid branches with long first internodes and channeled valleys distinguish it from that species.</p> | |discussion=<p><i>Equisetum</i> × <i>litorale</i> is a hybrid between <i>E. arvense</i> and <i>E. fluviatile</i>. It should be expected where the parents coexist. This hybrid has been mistaken for <i>Equisetum palustre</i>; the solid branches with long first internodes and channeled valleys distinguish it from that species.</p> | ||
|tables= | |tables= | ||
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|habitat=Ditches, stream banks, wet meadows | |habitat=Ditches, stream banks, wet meadows | ||
|elevation=0–1000 m | |elevation=0–1000 m | ||
| − | |distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo. | + | |distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Maine;Md.;Mass.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.J.;N.Y.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;S.Dak.;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo. |
|reference=None | |reference=None | ||
|publication title=Beitr. Pflanzenk. Russ. Reiches | |publication title=Beitr. Pflanzenk. Russ. Reiches | ||
Revision as of 16:34, 24 September 2021
Aerial stems monomorphic, green, branched or occasionally unbranched, 2–70 cm; hollow center 2/3–4/5 stem diam. Sheaths somewhat elongate, 3.5–8 × 2.5–6 mm; teeth dark, 7–14, narrow, 1–3 mm. Branches mostly from midstem nodes, ascending to spreading, solid; ridges 4–5; valleys channeled; proximal whorls with 1st internode of each branch equal to subtending stem sheath, distal whorls with 1st internode of each branch longer than stem sheath; sheath teeth attenuate.
Phenology: Cones maturing in early summer, but misshapen spores not shed.
Habitat: Ditches, stream banks, wet meadows
Elevation: 0–1000 m
Distribution
Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Conn., Del., Idaho, Ill., Ind., Iowa, Maine, Md., Mass., Mich., Minn., Mont., Nebr., N.H., N.J., N.Y., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Vt., Va., Wash., W.Va., Wis., Wyo.
Discussion
Equisetum × litorale is a hybrid between E. arvense and E. fluviatile. It should be expected where the parents coexist. This hybrid has been mistaken for Equisetum palustre; the solid branches with long first internodes and channeled valleys distinguish it from that species.
Selected References
None.