Overview

Distribution

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Distribution: China, Nepal, India, Indonesia, Korea, Japan, Russia, Caucasus, Europe, Greenland, and North America.
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Physical Description

Morphology

Description

Plants moderate-sized to robust, open, very stiff and slender, less frequently compact, capitulum large, flat, and stellate; typically deep green in shaded sites to yellowish brown in more open sites; without metallic lustre when dry. Stems pale green to yellow-brown; superficial cortical cells with a single large round pore in distal portion of cell usually free from cell wall. Stem leaves lingulate, broadly lingulate to lingulate-spatulate; 0.8-1.3 mm, apex broad, truncate and lacerate, border broad at base (more than 0.25 of base); hyaline cells rhomboid, efibrillose, and rarely septate. Branches typically long and tapering, not 5-ranked. Branch fascicles with 2 spreading and 1-2 pendent branches. Branch stem with solitary retort cells or in groups of 2-3, necks moderately distinct. Branch leaves ovate to ovate-lanceolate, 1-1.4(-1.8) mm, concave, straight, apex strongly involute, margins entire; hyaline cells on convex surface with numerous elliptic pores along the commissures, grading from small pores near the apex to large pores near the base, concave surface with large round pores along the margins and base. Sexual condition dioicous. Spores 21-27 µm, moderately to coarsely papillose on both surfaces; proximal laesura less than 0.5 spore radius.
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Description

Plants rather robust, stems and branches slender, stout, yellowish to grayish green, or tinged with light brownish color, in extensive compact cushions. Stem cortex in (2–)3–4 layers, hyaline cells large, thin-walled, with 2–3 large, rounded pores in each cell, without fibrils; central cylinder yellowish. Stem leaves 0.90–1.14 mm × 0.75–0.90 mm, broadly ligulate to oblong-ligulate, broadly rounded-truncate and lacerate-fringed at the apex; borders narrow above, suddenly widened below the middle (ca. 1/3 the leaf width at base); hyaline cells broadly to narrowly rhomboidal from the upper to lower, sometimes divided, without fibrils and pores, with a sieve-like triangular area of resorption at the middle of leaf base. Branches in fascicles of 3–5, with 2–3 spreading, gradually tapering or curved, sometimes short and abruptly tapering, capitulum in 5 radiate rows. Branch leaves 1.0–1.3 mm × 0.50–0.75 mm, imbricate, ovate-lanceolate, erect-spreading when dry; hyaline cells often with pseudofibrillose division, with large, rounded, unringed, central pores on the ventral surface, with small, ringed pores at the corners, rarely with commissural pores in the lower cells on the dorsal surface; green cells in cross section trapezoidal, often exposed on both surfaces, more broadly so on the ventral surface. Dioicous or monoicous; antheridial branches pale brown; perigonial buds globose. Perigonial leaves small, short and broad. Perichaetial leaves large, oblong or ovate-ligulate. Spores yellowish brown, smooth, 30–33 µm in diameter.
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Diagnostic Description

Synonym

Sphagnum mehneri Warnstorf
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Ecology

Habitat

Habitat: in various kinds of habitats, often on wet depressions in swamps, humic soil under coniferous forests or on humic soil under Rhododendron and bamboo, sometimes on wet rocks near streams, forming large, loose carpets.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Sphagnum girgensohnii

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Sphagnum girgensohnii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 5
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Threats

Comments: Land-use conversion, habitat fragmentation, and forest management practices are low-level threats to this species (Southern Appalachian Species Viability Project 2002).

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Wikipedia

Sphagnum girgensohnii

Common green peat moss (Sphagnum girgensohnii) is a species of peat moss with a Holarctic and Indo-Malesian distribution.

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Notes

Comments

Sporophytes are uncommon in Sphagnum girgensohnii. This species is most frequently associated with S. russowii, but also found growing with S. centrale, S. fallax, S. fimbriatum, S. warnstorfii, and S. magellanicum when growing in shaded sites of mires. It is very similar to S. rubiginosum, but S. girgensohnii lacks any reddish pigments, has only 2 spreading branches per fascicle, infrequently produces sporophytes, and differs in spore morphology. Throughout much of its range, S. girgensohnii is readily recognized by its green color and its large, slender, strongly stellate capitulum. In the more northern portion of its range, it frequently forms compact stands with a golden brown color and then the stem leaf must often be examined for accurate identification. In Alaska it overlaps morphogically with S. fimbriatum subsp. concinnum, which can look very similar but will have a more spatulate stem leaf that is lacerate completely across the broad flat apex and slightly down the sides. Sphagnum girgensohnii, on the other hand, has stem leaves only lacerate for about 3/4 of the apex width and less conspicuously broadened at the apex.
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Comments

This species is characterized by having grayish plants with stout stems and branches and by having imbricate branch leaves and broadly ligulate stem leaves with marginal borders suddenly widened at base.
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