Schistidium grandirete

H. H. Blom

Bryophyt. Biblioth. 49: 50, fig. 7. 1996,.

Treatment appears in FNA Volume 27. Treatment on page 218. Mentioned on page 210, 219.

Plants in open, occasionally compact tufts, yellowbrown or dull red, often with yellowish or olivaceous tones. Stems 1.2–7 cm, central strand weak or absent. Leaves erect or slightly curved when dry, ovatelanceolate, occasionally linear-lanceolate, keeled distally, 1.7–2.6 mm, 1-stratose; margins usually recurved to apex, smooth or weakly toothed, 2-stratose or 1-stratose in spots; apices acute; costa percurrent or short-excurrent as a smooth or weakly denticulate, occasionally decurrent awn, abaxial surface sometimes papillose; basal marginal cells short-rectangular or quadrate; distal cells mostly short-rectangular, 11–14 µm wide, strongly sinuose. Sexual condition autoicous. Capsule orange or redbrown, short-cylindric or cupulate, 0.7–1.1 mm; exothecial cells usually isodiametric, quadrate or irregularly angular, usually mixed with a few elongate cells, thin-walled, trigonous; stomata present or absent; peristome patent to squarrose-recurved, often twisted, 330–530 µm, bright red, papillose, usually strongly perforated. Spores 15–21 µm, granulose or verruculose.


Phenology: Capsules mature late spring to early summer.
Habitat: Rocks and on moist mineral soil
Elevation: low to moderate elevations (0-600 m)

Distribution

V27 296-distribution-map.gif

Greenland, Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Que., Eurasia

Discussion

Schistidium grandirete is an arctic species characterized by a distinctive orange-brown or dull red color and large laminal cells. Differences between S. grandirete and the similar arctic species 18. S. holmenianum are discussed thereunder.

Selected References

None.

Lower Taxa

None.

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

... more about "Schistidium grandirete"
deciduous +  and persistent +
multistratose +
Terry T. McIntosh +
H. H. Blom +
not papillose +
decurrent +  and denticulate +
sinuous +  and straight to sometimes +
rectangular +
quadrate +  and short-rectangular +
divided +
undifferentiated +
plicate +  and smooth +
not papillose +
mitrate +  and cucullate +
small;large +
sulcate +  and smooth +
redbrown +  and orange +
long-exserted +
striate +  and smooth +
cupulate;short-cylindric +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
thin +  and thick +
short-excurrent;percurrent +
subpercurrent +
reniform +, elliptical +  and terete +
usually not markedly larger +
autoicous +  and sexual +
short-rectangular +
2-stratose +  and 1-stratose +
Greenland +, Nfld. and Labr. (Nfld.) +, N.W.T. +, Nunavut +, Que. +  and Eurasia +
low to moderate elevations (0-600 m) +
trigonous +  and quadrate +
reproduction +  and asexual +
dioicous +, autoicous +  and sexual +
Rocks and on moist mineral soil +
papillose +, mammillose +  and smooth +
specialized +
dioicous +, autoicous +  and sexual +
keeled +, linear-lanceolate +  and ovatelanceolate +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
1-stratose;2-stratose +
thick-walled +  and sinuose +
papillose +  and smooth +
subtriangular +, ovate +, rectangular +  and quadrate +
thick-walled +  and sinuose +
papillose +  and smooth +
not +  and differentiated +
perforated +  and twisted +
patent +  and squarrose-recurved +
lanceolate;linear +
Capsules mature late spring to early summer. +
Bryophyt. Biblioth. +
straight +
sigmoid +  and arcuate +
papillose +  and smooth +
short to long +
ornamented +  and smooth +
globose +
1.2 cm12 mm <br />0.012 m <br /> (7 cm70 mm <br />0.07 m <br />) +
muticous;long-awned +
Schistidium grandirete +
Schistidium +
species +
olivaceous tones;red;dull;yellowbrown +