Tortula truncata

(Hedwig) Mitten in F. D. Godman

in F. D. Godman, Nat. Hist. Azores, 297. 1870,.

Basionyms: Gymnostomum truncatum Hedwig Sp. Musc. Frond., 30. 1801
Synonyms: Pottia truncata (Hedwig) Bruch & Schimper
Treatment appears in FNA Volume 27. Treatment on page 598. Mentioned on page 588, 589.

Leaves obovate to spatulate, apex broadly acute or occasionally rounded, short-awned, margins plane or rarely weakly recurved proximally, weakly bordered distally with 2–4 rows of slightly thicker-walled cells; costa excurrent, lacking an adaxial pad of cells, distally narrow, 2 cells across the convex or plane adaxial surface; distal laminal cells irregularly hexagonal, width 18–22 (–27) µm wide, 1: 1, smooth. Sexual condition autoicous. Sporophytes exerted. Seta 0.25–0.4 (–0.6) cm. Capsule stegocarpic, not systylius, urceolate or obovate, erect and nearly straight, urn 0.6–1 mm; peristome absent; operculum 0.3–0.5 mm. Spores 25–30 µm, spheric, densely papillose.


Phenology: Capsules mature fall–spring.
Habitat: Soil, calcareous soil with grasses, fields, lawns, roadsides
Elevation: low to moderate elevations

Distribution

V27 855-distribution-map.gif

B.C., N.B., N.S., Ont., Que., Sask., Conn., Ill., Maine, Md., Mass., Mich., Minn., N.J., N.Y., Pa., R.I., Vt., Wash., Wis., s South America, Europe, Asia, n Africa, Atlantic Islands, Pacific Islands (New Zealand), Australia

Discussion

Both Tortula truncata and T. modica may have distinct denticulations near the leaf apex or nearly throughout, and this can be more pronounced in the latter, which usually has papillose laminae.

Selected References

None.

Lower Taxa

None.

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

... more about "Tortula truncata"
smooth +  and papillose +
smooth +  and papillose +
2 +  and lacking +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
plane +  and convex +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
of 1-2 rows +  and differentiated +
long-excurrent +  and short-excurrent +
Rounded (?) +  and Acute (?) +
Richard H. Zander +  and Patricia M. Eckel +
(Hedwig) Mitten in F. D. Godman +
semicircular +  and elliptical +
semicircular +, elliptical +  and rounded +
papillose +  and smooth +
usually slightly wider +
usually ovate;oblong +
differentiated +
Gymnostomum truncatum +
obovoid +
cucullate +
0.25 cm2.5 mm <br />0.0025 m <br /> (?) +  and 0.6 cm6 mm <br />0.006 m <br /> (?) +
not systylius +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
dark-brown +  and yellowish-brown +
cleistocarpous +  and stegocarpous +
obovate;urceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
monoicous +, dioicous +  and sexual +
thicker-walled +
1 (?) +  and 3 (?) +
elongate-rhomboid +  and elongate +
tomentose +  and bare +
subpercurrent +
autoicous +  and sexual +
B.C. +, N.B. +, N.S. +, Ont. +, Que. +, Sask. +, Conn. +, Ill. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.J. +, N.Y. +, Pa. +, R.I. +, Vt. +, Wash. +, Wis. +, s South America +, Europe +, Asia +, n Africa +, Atlantic Islands +, Pacific Islands (New Zealand) +  and Australia +
low to moderate elevations +
differentiated +
multicellular +
Soil, calcareous soil with grasses, fields, lawns, roadsides +
somewhat larger +
yellow +  and orange-red or red +
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 +
obovate +  and spatulate +
reduced +
serrulate +  and entire +
smaller +
rostrate;long-conic +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
differentiated +
photosynthetic +
simple +  and hollow +
4 +  and 6 +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
consisting of 16 mostly 2 times cleft spiculose striate or papillose lanceolate teeth , , , , +  and rudimentary +
Capsules mature fall–spring. +
in F. D. Godman, Nat. Hist. Azores, +
straight +
not twisted +  and twisted +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
brown;yellowish-brown +
elongate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2 +  and 1 +
orange +, red +, yellow +, laminal +  and light-brown +
spheric +
rounded-pentagonal +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Pottia truncata +
Tortula truncata +
species +
ovoid;cylindric +
rudimentary +
32 +  and 16 +
triangular +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
yellow distally and red +, orange +, red +  and yellow +
rectangular +
thickened +, thin +  and thicker +
stemless +  and perigoniate +
yellowbrown;dark-brown +
occasionally smaller than the perichaetiate +