Difference between revisions of "Pylaisia intricata"
in P. Bruch and W. P. Schimper, Bryol. Europ. 5: 88. 1851.
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|accepted_name=Pylaisia intricata | |accepted_name=Pylaisia intricata | ||
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|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in P. Bruch and W. P. Schimper, Bryol. Europ. | |title=in P. Bruch and W. P. Schimper, Bryol. Europ. | ||
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name=Pylaisia intricata | name=Pylaisia intricata | ||
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|rank=species | |rank=species | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=1851 | |publication year=1851 | ||
|special status=Endemic;Illustrated | |special status=Endemic;Illustrated | ||
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|genus=Pylaisia | |genus=Pylaisia | ||
|species=Pylaisia intricata | |species=Pylaisia intricata |
Latest revision as of 22:38, 5 November 2020
Plants yellowish. Stems terete-foliate, irregularly pinnate, branches 5 mm, creeping or sometimes ascending and curved, subjulaceous; pseudoparaphyllia triangular to semicircular. Stem and branch leaves differentiated. Stem leaves straight or somewhat falcate, ovate-lanceolate, suddenly narrowed to apex, concave, not plicate, 0.8–1 × 0.2–0.4 mm; margins plane; acumen short; costa double, short; alar cells 6–12 along margins, in 6–9 rows; medial laminal cells 30–65 × 5–6 µm. Branch leaves oblong-lanceolate, larger, 1.1–1.2 × 0.3–0.4 mm. Seta 2–2.4 cm. Capsule erect to suberect, oblong-cylindric, 1.8–2 × 0.6–0.7 mm; exothecial cell shape variable; operculum rostrate, obliquely long-pointed; peristome reduced; exostome teeth lanceolate, 0.2 mm, base 50 µm wide, finely papillose distally; endostome adherent to exostome teeth, basal membrane well developed, segments 2-fid, split, internal surface roughly and finely papillose, segment and cilia connate. Spores 16–32 µm.
Phenology: Capsules mature late summer–early fall.
Habitat: Trunks of broad-leaved trees
Elevation: moderate to high elevations
Distribution
![V28 883-distribution-map.gif](/w/images/7/71/V28_883-distribution-map.gif)
Alta., B.C., Man., N.B., N.W.T., N.S., Ont., Que., Ala., Ariz., Colo., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Maine, Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.
Discussion
Pylaisia intricata is a rare species endemic to the flora area. The leaves are homomallous and erect-spreading when dry, wide-spreading when moist, and cordate at the base; the distalmost annulus cells are vesiculose and deciduous. The species is characterized by rather small branch leaves, long-pointed opercula, finely papillose external surface of the distal portion of exostome teeth, and adherent endostome; it can be distinguished from P. polyantha by its adherent endostome and larger spores.
Selected References
None.