Difference between revisions of "Cratoneuron"
Cat. Musc., 21. 1867.
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|name=Hypnum sect. Cratoneuron | |name=Hypnum sect. Cratoneuron | ||
|authority=Sullivant | |authority=Sullivant | ||
| + | |rank=section | ||
| + | |publication_title=in A. Gray, Manual ed. | ||
| + | |publication_place=2, 673. 1856 | ||
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|distribution=North America;South America;Eurasia;Africa;Atlantic Islands;Pacific Islands (New Zealand). | |distribution=North America;South America;Eurasia;Africa;Atlantic Islands;Pacific Islands (New Zealand). | ||
|discussion=<p>Species 2 (1 in the flora).</p><!-- | |discussion=<p>Species 2 (1 in the flora).</p><!-- | ||
| − | --><p>Cratoneuron grows in slightly or strongly calcareous habitats that are at least periodically wet; plants have a strong leaf costa, relatively short, smooth laminal cells, and mostly lanceolate and leaflike paraphyllia. The differences between Cratoneuron and 2. Palustriella are described under the latter.</p> | + | --><p><i>Cratoneuron</i> grows in slightly or strongly calcareous habitats that are at least periodically wet; plants have a strong leaf costa, relatively short, smooth laminal cells, and mostly lanceolate and leaflike paraphyllia. The differences between <i>Cratoneuron</i> and 2. <i>Palustriella</i> are described under the latter.</p> |
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|publication year=1867 | |publication year=1867 | ||
|special status= | |special status= | ||
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|genus=Cratoneuron | |genus=Cratoneuron | ||
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-->[[Category:Treatment]][[Category:Amblystegiaceae]] | -->[[Category:Treatment]][[Category:Amblystegiaceae]] | ||
Latest revision as of 21:35, 5 November 2020
Plants medium-sized, green, yellowish, or rarely brownish. Stems pinnate or irregularly branched; hyalodermis absent, central strand present; paraphyllia few to many, rarely absent, lanceolate; rhizoids or rhizoid initials on stem or abaxial costa insertion, often forming tomentum, usually strongly branched, smooth; axillary hair distal cells 1 or 2, hyaline. Stem leaves not recurved or squarrose, straight or falcate, narrowly to broadly triangular or rounded-triangular, sometimes ovate, not plicate, longer than 1 mm; base decurrent; margins plane or near base slightly recurved, denticulate or serrulate almost throughout, limbidia absent; apex acuminate, acumen plane or furrowed; costa strong, single, usually percurrent or excurrent, sometimes ending well before apex; alar cells differentiated, strongly inflated, hyaline, region well defined, transversely triangular; medial laminal cells elongate-hexagonal, short-rectangular, rectangular, short-linear, or rarely linear, smooth; marginal cells 1-stratose. Sexual condition dioicous. Capsule horizontal, cylindric, curved; peristome perfect; exostome margins slightly dentate distally; endostome cilia 2 or 3, well developed, nodose. Spores 14–21(–25) µm.
Distribution
North America, South America, Eurasia, Africa, Atlantic Islands, Pacific Islands (New Zealand).
Discussion
Species 2 (1 in the flora).
Cratoneuron grows in slightly or strongly calcareous habitats that are at least periodically wet; plants have a strong leaf costa, relatively short, smooth laminal cells, and mostly lanceolate and leaflike paraphyllia. The differences between Cratoneuron and 2. Palustriella are described under the latter.
Selected References
None.