Brachythecium turgidum

(Hartman) Kindberg

Vidensk. Meddel. Naturhist. Foren. Kjøbenhavn, ser. 4, 9: 294. 1888.

Basionym: Hypnum salebrosum var. turgidum Hartman Handb. Skand. Fl. ed. 3, 2: 309. 1838
Treatment appears in FNA Volume 28. Treatment on page 427. Mentioned on page 414, 415, 416, 428.

Plants large, rigid, in moderately dense mats, green to often rich golden and brownish yellow. Stems to 12 cm, creeping to ascending or erect in dense growth, terete-foliate, irregularly pinnate, branches to 15 mm, straight to flexuose, terete-foliate. Stem-leaves erect-appressed, closely imbricate, ovatelanceolate, broadest at 1/8–1/4 leaf length, slightly concave, strongly plicate, 2.5–3.5 × 0.9–1.3 mm; base tapered, decurrent; margins plane or often recurved at places, entire to slightly serrulate, especially distally; apex gradually or abruptly tapered, acumen often long and filiform; costa to 60–75% leaf length, moderately strong, terminal spine absent; alar cells subquadrate to short-rectangular, small, 12–20 × 11–15 µm, walls thick, region indistinctly delimited, of 5–10 × 5–8 cells; laminal cells linear, 45–100 (–130) × 6–9 (–11) µm, walls thick, of similar width as lumina; basal-cells 8–13 µm wide, walls thick, porose, region in 3 rows. Branch leaves similar, smaller. Sexual condition autoicous. Seta reddish, 1–2 cm, smooth. Capsule horizontal, redbrown to dark-brown, elongate, curved, 2 mm; annulus separating by fragments; operculum long-conic. Spores 13–17 µm.


Habitat: Soil, rock, exposed mesic to wet habitats
Elevation: low to moderate elevations (0-1300 m)

Distribution

V28 664-distribution-map.gif

Greenland, Alta., B.C., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Yukon, Alaska, Mich., Mont., Wyo., n Eurasia

Discussion

Brachythecium turgidum is an Arctic-alpine species obviously with a higher elevation limit than 1300 m, but many labels lack elevation information. The species can usually be recognized as robust plants with upright growth, strongly plicate leaves, subentire leaf margins, thick-walled laminal cells, and thick-walled and porose basal cells. This species rarely produces sporophytes, and if they are present, the seta is quite short. In wet places in the Arctic, especially near late and permanent snow beds, this species develops shoots with very concave, weakly plicate leaves that are also abruptly acuminate, and the plants look similar to B. cirrosum.

Selected References

None.

Lower Taxa

None.

"long" is not a number."broad" is not a number.

... more about "Brachythecium turgidum"
filiform +
dioicous +, autoicous +  and sexual +
Michael S. Ignatov +
(Hartman) Kindberg +
8um +  and 13um +
short-decurrent +
rounded +  and narrowed +
decurrent +  and tapered +
short to long +
Hypnum salebrosum var. turgidum +
terete-foliate +
straight;flexuose +
autoicous +  and sexual +
cucullate +
redbrown +  and dark-brown +
2 cm20 mm <br />0.02 m <br /> (?) +
specialized +
synoicous +, dioicous +, autoicous +, sexual +  and asexual +
subquadrate +  and short-rectangular +
differentiated +
11um +  and 15um +
3 (?) +  and 2 (?) +
discernible +
Greenland +, Alta. +, B.C. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +, Mich. +, Mont. +, Wyo. +  and n Eurasia +
low to moderate elevations (0-1300 m) +
not adherent +
Soil, rock, exposed mesic to wet habitats +
6um (?) +  and 9um (?) +
pointed +
moderate to somewhat +
entire +  and slightly serrulate +
long-conic +
perfect +  and xerocastique +
hygrocastique +
not plicate +  and crumpled +
Vidensk. Meddel. Naturhist. Foren. Kjøbenhavn, ser. +
pellucid +, opaque +  and otherwise +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2.5mm;3.5mm +
patent +, spreading +  and erect +
concave +  and ovatelanceolate +
0.9mm;1.3mm +
terete-foliate +
not reddish +
creeping +  and ascending or erect +
0 cm0 mm <br />0 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Chamberlainia +
Brachythecium turgidum +
Brachythecium +
species +
incrassate +
thick;thick;thick +
golden and brownish yellow +  and green +