Pterygoneurum lamellatum

(Lindberg) Juratzka

Laubm.-Fl. Oesterr.-Ung., 97. 1882,.

Basionym: Tortula lamellata Lindberg Öfvers. Kongl. Vetensk.-Akad. Förh. 21: 233. 1864
Synonyms: Pterygoneurum arcticum Steere
Treatment appears in FNA Volume 27. Treatment on page 607.

Leaves with distal lamina sometimes weakly papillose abaxially; awn smooth; lamellae (0–) 8–14 cells in height, irregularly lobed, often bearing filaments. Capsule stegocarpous, exerted, short to long-cylindric, annulus present, operculum cells in twisted rows; peristome present, fragile and often adherent to the operculum. Calyptra cucullate.


Phenology: Capsules mature late winter, spring.
Habitat: Soil, rock faces
Elevation: moderate elevations (500-1400 m)

Distribution

V27 877-distribution-map.gif

B.C., Nunavut, Alaska, Ariz., Calif., Nev., Utah, Europe, Asia

Discussion

The operculum of Pterygoneurum lamellatum is commonly long-conic when dry, while that of P. ovatum is generally linear. The peristome may be trellislike (illustrated by S. Flowers 1973) or a rudimentary arrangement of small plates over a membrane (R. H. Zander 1993), or even absent. Also keying to P. lamellatum is the British Columbian specimen reported by T. T. McIntosh (1989) as Tortula wilsonii (Hooker) R. H. Zander. This proved to be a species, possibly new, of Pterygoneurum distinguished by broadly recurved leaf margins and multiple papillae on both sides of the leaf above mid leaf. The adaxial costal lamellae are distinct but occasionally absent in some plants, which then phenocopy Tortula or Hilpertia. This specimen in turn proved to be similar to a Pterygoneurum discussed but not formally described by B. M. Murray (1992) for Alaska; a name will be provided in a future publication.

Selected References

None.

Lower Taxa

None.

"um" is not declared as a valid unit of measurement for this property.

... more about "Pterygoneurum lamellatum"
hollow-papillose +  and smooth +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
Cucullate (?) +, Obtuse (?) +  and Rounded (?) +
Richard H. Zander +
(Lindberg) Juratzka +
denticulate +
round +  and elliptic +
papillose +  and smooth +
usually slightly wider +
not differentiated +
Tortula lamellata +
obovoid +
cucullate +
stegocarpous +
long-cylindric +
paroicous +, autoicous +, sexual +  and asexual +
thin;weakly thickened +
brown +  and hyaline +
Few (?) +  and Several (?) +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
long-excurrent +
denticulate +, entire +  and plane +
quadrate;shortly rectangular +
B.C. +, Nunavut +, Alaska +, Ariz. +, Calif. +, Nev. +, Utah +, Europe +  and Asia +
moderate elevations (500-1400 m) +
differentiated +
multicellular +
Soil, rock faces +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
yellow +  and orange-red or red +
8 +  and 14 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
concave;keeled;channeled;ovoid;lanceolate or lingulate +
spathulate +  and ovate +
reduced +
dentate +  and entire +
rostrate;conic-rostrate +
photosynthetic +
hollow +, solid +  and simple +
2 +  and 3 +
flattened +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
Capsules mature late winter, spring. +
1 (?) +, 2 (?) +  and 5 (?) +
Laubm.-Fl. Oesterr.-Ung., +
straight +
elongate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
2 +  and 1 +
orange +, red +, yellow +  and laminal +
rounded-triangular +  and rounded-pentagonal +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Pterygoneurum arcticum +
Pterygoneurum lamellatum +
Pterygoneurum +
species +
sulcate +  and macrostomous +
ridged;short-cylindric +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
yellow distally and red +, orange +, red +  and yellow +
stemless +  and perigoniate +
light-brown;green +
plant +, forming a thin turf +  and gregarious +
occasionally smaller than the perichaetiate +