Difference between revisions of "Rhizomnium magnifolium"
Ann. Bot. Fenn. 10: 14. 1973.
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|special_status={{Treatment/ID/Special_status | |special_status={{Treatment/ID/Special_status | ||
|code=F | |code=F | ||
| − | |label= | + | |label=Illustrated |
}} | }} | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
|name=Mnium magnifolium | |name=Mnium magnifolium | ||
|authority=Horikawa | |authority=Horikawa | ||
| + | |rank=species | ||
| + | |publication_title=J. Jap. Bot. | ||
| + | |publication_place=11: 503, figs. 4, 5. 1935 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=M. punctatum var. elatum | |name=M. punctatum var. elatum | ||
|authority=Schimper | |authority=Schimper | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Rhizomnium perssonii | |name=Rhizomnium perssonii | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Mniaceae;Rhizomnium;Rhizomnium magnifolium | |hierarchy=Mniaceae;Rhizomnium;Rhizomnium magnifolium | ||
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|elevation=low to moderate elevations | |elevation=low to moderate elevations | ||
|distribution=Greenland;Alta.;B.C.;N.B.;Nfld. and Labr.;N.S.;Ont.;Que.;Yukon;Alaska;Calif.;Colo.;Idaho;Maine;Mich.;Minn.;Mont.;N.Y.;N.C.;Oreg.;Pa.;Wash.;Wis.;Wyo.;Europe;Asia. | |distribution=Greenland;Alta.;B.C.;N.B.;Nfld. and Labr.;N.S.;Ont.;Que.;Yukon;Alaska;Calif.;Colo.;Idaho;Maine;Mich.;Minn.;Mont.;N.Y.;N.C.;Oreg.;Pa.;Wash.;Wis.;Wyo.;Europe;Asia. | ||
| − | |discussion=<p>Rhizomnium magnifolium, although usually large, can sometimes be small and has been confused with R. pseudopunctatum. Fertile plants of R. pseudopunctatum are synoicous, but sterile collections are common and often ambiguous. Rhizomnium magnifolium has larger and much less pitted laminal cells than R. pseudopunctatum, and its margins are composed mainly of linear cells and are usually 2-stratose; those of R. pseudopunctatum are composed of shorter and usually rectangular or rhomboidal cells and are always 1-stratose. The length of the costa is frequently used to separate these two species, but this character is unreliable with smaller specimens of R. magnifolium. The costa of R. magnifolium is often subpercurrent or percurrent, whereas the costa of R. pseudopunctatum is usually much shorter, and only occasionally subpercurrent and rarely percurrent. For comparison with the similar 2. R. appalachianum, see the discussion there.</p> | + | |discussion=<p><i>Rhizomnium magnifolium</i>, although usually large, can sometimes be small and has been confused with <i>R. pseudopunctatum</i>. Fertile plants of <i>R. pseudopunctatum</i> are synoicous, but sterile collections are common and often ambiguous. <i>Rhizomnium magnifolium</i> has larger and much less pitted laminal cells than <i>R. pseudopunctatum</i>, and its margins are composed mainly of linear cells and are usually 2-stratose; those of <i>R. pseudopunctatum</i> are composed of shorter and usually rectangular or rhomboidal cells and are always 1-stratose. The length of the costa is frequently used to separate these two species, but this character is unreliable with smaller specimens of <i>R. magnifolium</i>. The costa of <i>R. magnifolium</i> is often subpercurrent or percurrent, whereas the costa of <i>R. pseudopunctatum</i> is usually much shorter, and only occasionally subpercurrent and rarely percurrent. For comparison with the similar 2. <i>R. appalachianum</i>, see the discussion there.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Rhizomnium magnifolium | name=Rhizomnium magnifolium | ||
| − | |||
|authority=(Horikawa) T. J. Koponen | |authority=(Horikawa) T. J. Koponen | ||
|rank=species | |rank=species | ||
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|publication title=Ann. Bot. Fenn. | |publication title=Ann. Bot. Fenn. | ||
|publication year=1973 | |publication year=1973 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_384.xml |
|genus=Rhizomnium | |genus=Rhizomnium | ||
|species=Rhizomnium magnifolium | |species=Rhizomnium magnifolium | ||
Latest revision as of 21:35, 5 November 2020
Plants (2–)3–6(–10) cm. Stems reddish brown to black when old; micronemata present, often absent on young stems. Leaves green to dark green, contorted when dry, obovate or broadly elliptic, 4–9(–12) mm; margins green or sometimes reddish, 1- or 2-stratose; apex rounded or retuse, sometimes emarginate, rarely weakly apiculate; costa ending well before apex, subpercurrent, or percurrent, sometimes 2-fid distally; medial laminal cells elongate, (55–)80–100(–130) µm, weakly collenchymatous, walls lightly pitted; marginal cells linear, in 2–3(–4) rows. Sexual condition dioicous. Seta 2–4 cm. Capsule oblong or cylindric, 3–4 mm; operculum conic-rostrate; exostome greenish yellow, lamellae 18+. Spores 25–35 µm.
Phenology: Capsules mature summer.
Habitat: Forested stream banks, seeps on moist soil, humus, rock
Elevation: low to moderate elevations
Distribution
Greenland, Alta., B.C., N.B., Nfld. and Labr., N.S., Ont., Que., Yukon, Alaska, Calif., Colo., Idaho, Maine, Mich., Minn., Mont., N.Y., N.C., Oreg., Pa., Wash., Wis., Wyo., Europe, Asia.
Discussion
Rhizomnium magnifolium, although usually large, can sometimes be small and has been confused with R. pseudopunctatum. Fertile plants of R. pseudopunctatum are synoicous, but sterile collections are common and often ambiguous. Rhizomnium magnifolium has larger and much less pitted laminal cells than R. pseudopunctatum, and its margins are composed mainly of linear cells and are usually 2-stratose; those of R. pseudopunctatum are composed of shorter and usually rectangular or rhomboidal cells and are always 1-stratose. The length of the costa is frequently used to separate these two species, but this character is unreliable with smaller specimens of R. magnifolium. The costa of R. magnifolium is often subpercurrent or percurrent, whereas the costa of R. pseudopunctatum is usually much shorter, and only occasionally subpercurrent and rarely percurrent. For comparison with the similar 2. R. appalachianum, see the discussion there.
Selected References
None.