Difference between revisions of "Timmia megapolitana"
Sp. Musc. Frond., 176. 1801,.
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|distribution=North America;Eurasia;n Africa;Atlantic Islands (Iceland);Pacific Islands (Hawaii). | |distribution=North America;Eurasia;n Africa;Atlantic Islands (Iceland);Pacific Islands (Hawaii). | ||
|discussion=<p>Subspecies 2 (2 in the flora).</p><!-- | |discussion=<p>Subspecies 2 (2 in the flora).</p><!-- | ||
| − | --><p>Timmia megapolitana is a distinct species within the genus, separated by its monoicous sexuality, distinct but pale leaf sheaths, and elaborately appendiculate endostome cilia.</p> | + | --><p><i>Timmia megapolitana</i> is a distinct species within the genus, separated by its monoicous sexuality, distinct but pale leaf sheaths, and elaborately appendiculate endostome cilia.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Timmia megapolitana | name=Timmia megapolitana | ||
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|authority=Hedwig | |authority=Hedwig | ||
|rank=species | |rank=species | ||
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|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_210.xml |
|genus=Timmia | |genus=Timmia | ||
|species=Timmia megapolitana | |species=Timmia megapolitana | ||
Latest revision as of 22:24, 5 November 2020
Plants without deciduous distal leaves. Leaf apex acute; costa subpercurrent; sheath clear or yellowish; limb green, pellucid; limb-sheath transition abrupt, not sharply angled; limb margins strongly dentate in distal half, with fewer and smaller teeth below, and a few small sharp teeth at limb-sheath transition; limb lamina cells (5–)7–16(–21) × (6–)7–12(–14) µm, with low rounded or flattened mamillae on the adaxial surface, abaxial surface smooth; abaxial surfaces of sheath lamina cells smooth or with 1–6 papillae over lumen; cells at leaf insertion not fragile and hyaline; abaxial surface of limb costa smooth (rarely papillose near leaf apex), adaxial cells with rounded or somewhat flattened mamillae. Sexual condition monoicous; perichaetial leaves narrower than vegetative leaves. Calyptra with a median longitudinal split, sometimes persistent on the neck of the capsule or seta. Capsule plicate or puckered when dry; exothecial cells with non-sinuose walls; stomata on urn; endostome cilia with numerous spine-like or branched-stellate appendiculations on the interior surfaces.
Distribution
North America, Eurasia, n Africa, Atlantic Islands (Iceland), Pacific Islands (Hawaii).
Discussion
Subspecies 2 (2 in the flora).
Timmia megapolitana is a distinct species within the genus, separated by its monoicous sexuality, distinct but pale leaf sheaths, and elaborately appendiculate endostome cilia.
Selected References
None.
Key
| 1 | Cells of mid-limb lamina (8-)9-12(-14) µm wide; cells of distal part of leaf sheath papillose; calyptra often remaining attached to seta at base of capsule | Timmia megapolitana subsp. megapolitana |
| 1 | Cells of the mid-limb lamina (6-)7-10(-12) µm wide; cells of distal part of leaf sheath smooth; calyptra not persistent on seta. | Timmia megapolitana subsp. bavarica |