Difference between revisions of "Ditrichum gracile"
Revis. Gen. Pl. 2: 835. 1891,.
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|name=Leptotrichum gracile | |name=Leptotrichum gracile | ||
|authority=Mitten | |authority=Mitten | ||
| + | |rank=species | ||
|publication_title=Hooker’s J. Bot. Kew Gard. Misc. | |publication_title=Hooker’s J. Bot. Kew Gard. Misc. | ||
|publication_place=3: 353. 1851 | |publication_place=3: 353. 1851 | ||
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|name=Leptotrichum crispatissimum | |name=Leptotrichum crispatissimum | ||
|authority=Müller Hal. | |authority=Müller Hal. | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ditrichum crispatissimum | |name=Ditrichum crispatissimum | ||
|authority=(Müller Hal.) Paris | |authority=(Müller Hal.) Paris | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ditrichum giganteum | |name=Ditrichum giganteum | ||
|authority=R. S. Williams | |authority=R. S. Williams | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Ditrichaceae;Ditrichum;Ditrichum gracile | |hierarchy=Ditrichaceae;Ditrichum;Ditrichum gracile | ||
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|phenology=Capsules rarely produced, mature summer (Jul). | |phenology=Capsules rarely produced, mature summer (Jul). | ||
|habitat=Soil, rocks | |habitat=Soil, rocks | ||
| − | |elevation=moderate to high elevations ( | + | |elevation=moderate to high elevations (0–4000 m) |
|distribution=Greenland;B.C.;Nfld. and Labr.;N.W.T.;Nunavut;Ont.;Que.;Alaska;Colo.;Minn.;Mont.;Wyo.;Mexico;Central America (Guatemala;El Salvador);South America (Colombia);Europe;Asia (Japan;Taiwan);Pacific Islands (New Guinea;New Zealand). | |distribution=Greenland;B.C.;Nfld. and Labr.;N.W.T.;Nunavut;Ont.;Que.;Alaska;Colo.;Minn.;Mont.;Wyo.;Mexico;Central America (Guatemala;El Salvador);South America (Colombia);Europe;Asia (Japan;Taiwan);Pacific Islands (New Guinea;New Zealand). | ||
|discussion=<p>B. H. Allen (1994) included <i>Ditrichum</i> crispatissimum and D. giganteum as synonyms of <i>D. gracile</i>, an interpretation we have followed here. As with <i>D. flexicaule</i>, a detailed molecular analysis of this and related taxa may help considerably in ascertaining taxonomic affinities.</p> | |discussion=<p>B. H. Allen (1994) included <i>Ditrichum</i> crispatissimum and D. giganteum as synonyms of <i>D. gracile</i>, an interpretation we have followed here. As with <i>D. flexicaule</i>, a detailed molecular analysis of this and related taxa may help considerably in ascertaining taxonomic affinities.</p> | ||
| Line 45: | Line 49: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Ditrichum gracile | name=Ditrichum gracile | ||
| − | |||
|authority=(Mitten) Kuntze | |authority=(Mitten) Kuntze | ||
|rank=species | |rank=species | ||
| Line 54: | Line 57: | ||
|phenology=Capsules rarely produced, mature summer (Jul). | |phenology=Capsules rarely produced, mature summer (Jul). | ||
|habitat=Soil, rocks | |habitat=Soil, rocks | ||
| − | |elevation=moderate to high elevations ( | + | |elevation=moderate to high elevations (0–4000 m) |
|distribution=Greenland;B.C.;Nfld. and Labr.;N.W.T.;Nunavut;Ont.;Que.;Alaska;Colo.;Minn.;Mont.;Wyo.;Mexico;Central America (Guatemala;El Salvador);South America (Colombia);Europe;Asia (Japan;Taiwan);Pacific Islands (New Guinea;New Zealand). | |distribution=Greenland;B.C.;Nfld. and Labr.;N.W.T.;Nunavut;Ont.;Que.;Alaska;Colo.;Minn.;Mont.;Wyo.;Mexico;Central America (Guatemala;El Salvador);South America (Colombia);Europe;Asia (Japan;Taiwan);Pacific Islands (New Guinea;New Zealand). | ||
|reference=None | |reference=None | ||
| Line 60: | Line 63: | ||
|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_653.xml |
|genus=Ditrichum | |genus=Ditrichum | ||
|species=Ditrichum gracile | |species=Ditrichum gracile | ||
Latest revision as of 22:27, 5 November 2020
Plants in tufts, yellowish brown to dark green, often shiny. Stems very variable in length, to 7 cm or more, simple or with relatively few branches; loosely compacted and then sparsely tomentose, or closely compact and rather densely tomentose. Leaves often ± falcate, slightly or not flexuose, subula of leaves often spirally twisted together, 4–7 mm, tapering ± gradually from an elongate ovate sheathing base to a long subula, lamina 1-stratose proximally, often 2-stratose distally in the subula; margins spinulose-denticulate in distal part of the subula or sometimes ± entire, often 2-stratose distally; costa occupying 1/4–1/3 width of leaf base, weakly abaxially convex, with poorly developed stereid bands abaxially and adaxially; cells of the subula and distal part of leaf base short, isodiametric to rhomboid to short rectangular, those of the leaf base becoming elongate, rectangular, with ± nodulose longitudinal walls, particularly near the costa, cells of the basal margins narrower. Specialized asexual reproduction unknown. Sexual condition dioicous; sporophytes rare; male plants slightly smaller than rarer female plants. Seta dark reddish brown, to 2.5 cm, ± flexuose. Capsule erect and symmetric to slightly inclined, dark brown, ± cylindric, 1.5–2 mm; operculum high-conic to conic-rostrate, to about 1 mm; peristome teeth about 400 µm, pale, 2-fid, divided to near base, densely papillose, fragile. Spores 12–15 µm, finely papillose.
Phenology: Capsules rarely produced, mature summer (Jul).
Habitat: Soil, rocks
Elevation: moderate to high elevations (0–4000 m)
Distribution
Greenland, B.C., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Alaska, Colo., Minn., Mont., Wyo., Mexico, Central America (Guatemala, El Salvador), South America (Colombia), Europe, Asia (Japan, Taiwan), Pacific Islands (New Guinea, New Zealand).
Discussion
B. H. Allen (1994) included Ditrichum crispatissimum and D. giganteum as synonyms of D. gracile, an interpretation we have followed here. As with D. flexicaule, a detailed molecular analysis of this and related taxa may help considerably in ascertaining taxonomic affinities.
Selected References
None.