Overview
Taxonomy
The Family Plagiotheciaceae is further organized into finer groupings including:
- Genus (4): Bardunovia · Isocladiella · Plagiotheciella · Plagiothecium
- Species: ZipcodeZoo has pages for 55 species, subspecies, varieties, forms, and cultivars in the Family Plagiotheciaceae.
Genera
Bardunovia
Isocladiella
Plagiotheciella
Plagiothecium
Plants dark green to yellow-green, glossy or sometimes dull. Stems 20--60 × 0.5--4 mm. Leaves 0.7--3 × 0.4--2 mm; median leaf cells 36--180 × 3--21 µm, apical cells often shorter, basal cells shorter and broader; decurrent alar regions triangular or often auriculate and oval in outline, consisting of 1--8 longitudinal rows of spherical, oval, quadrate, or rectangular cells. Specialized asexual reproduction present as smooth-walled propagula borne on stems and branches, 2--7-celled, uniseriate bodies. Sexual condition usually autoicous; perigonia and perichaetia numerous at bases of stems; perigonial bracts short, lanceolate to ovate, acuminate to filiform-acuminate; perichaetial leaves moderately enlarged, sheathing with somewhat spreading apices. Seta yellow, or orange to red-brown, Capsule yellow, or orange to red-brown, oblong to ovoid, often contracted under mouth when dry, smooth to striate, often wrinkled at neck; cilia 1--3, nodulose, as long as or nearly as long as the segments, rarely rudimentary or lacking.[1] [more]
At least 142 species and subspecies belong to the Genus Plagiothecium.
More info about the Genus Plagiothecium may be found here.
Bibliography
- Ireland, R. R. 1969. A taxonomic revision of the genus Plagiothecium for North America, north of Mexico. Natl. Mus. Canada, Natl. Mus. Nat. Sci., Publ. Bot. 1: 1--118.
- Ireland, R. R. 1986. Synopsis of the genus Plagiothecium for North America. Lindbergia 12: 49--56.
- Ireland, R. R. 1987. Scanning electron microscope study of the spores of the North American species of Plagiothecium. Mem. New York Bot. Gard. 45: 95--110.
Footnotes
- Robert R. Ireland "Plagiothecium". in Bryophyte Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org.
Sources
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