Pylaisia intricata

(Hedwig) Schimper in P. Bruch and W. P. Schimper

in P. Bruch and W. P. Schimper, Bryol. Europ. 5: 88. 1851.

EndemicIllustrated
Basionym: Pterigynandrum intricatum Hedwig Sp. Musc. Frond., 85, plate 18, figs. 1–5. 1801
Synonyms: Hypnum intricatum (Hedwig) Müller Hal. Pterogonium intricatum (Hedwig) Schwägrichen Pylaisia velutina Schimper Pylaisiella intricata (Hedwig) Grout P. velutina (Schimper) Kindberg Stereodon intricatus (Hedwig) Lindberg & Arnell
Treatment appears in FNA Volume 28. Treatment on page 566. Mentioned on page 564.

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, ovatelanceolate, 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

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.

Lower Taxa

None.
... more about "Pylaisia intricata"
not +  and differentiated +
subulate;acuminate +
Tomotsugu Arikawa +
(Hedwig) Schimper in P. Bruch and W. P. Schimper +
papillose +
decurrent +
Pterigynandrum intricatum +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
autoicous +, sexual +  and asexual +
oblong-lanceolate +
0.3mm +  and 0.4mm +
5 cm50 mm <br />0.05 m <br /> (?) +
cucullate +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
erect +  and suberect +
oblong-cylindric +
constricted +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
similar +  and pigmented +
6 +  and 12 +
subquadrate;rectangular +
enlarged +
differentiated +
rudimentary +
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. +  and Wis. +
moderate to high elevations +
filamentous +
Trunks of broad-leaved trees +
dioicous +, autoicous +  and sexual +
long-pointed +  and rostrate +
hygroscopic +  and perfect +
Capsules mature late summer–early fall. +
triangular;semicircular +
in P. Bruch and W. P. Schimper, Bryol. Europ. +
papillose +  and smooth +
reddish +  and yellowish +
elongate +
2 cm20 mm <br />0.02 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
Endemic +  and Illustrated +
spheric +
erect-spreading +
concave +, narrowed +, ovatelanceolate +  and falcate +
0.2mm;0.4mm +
terete-foliate +
falcate-secund +
straight +
erect +, suberect +  and creeping +
triangular +, lanceolate +, linear +  and ovatelanceolate +
differentiated +
Hypnum intricatum +, Pterogonium intricatum +, Pylaisia velutina +, Pylaisiella intricata +, P. velutina +  and Stereodon intricatus +
Pylaisia intricata +
Pylaisia +
species +