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, Southeast Asia, Russian Far East, Europe, North America, North Africa, and Australia.
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Physical Description

Morphology

Description

Plants moderate to large-sized, dense and compact, pale green, brownish white, golden brown to variegated golden brown, can be reddish in rocky seep habitats; forms small, tufted compact cushions. Stems brown. Stem leaves small, 0.3-0.7 mm, triangular-lingulate with broad rounded apex, Branches short, crowded, and unranked. Branch fascicles 4-6 branches per fascicle, 2-3 spreading and 2-3 pendent, but plants frequently unbranched in young clones. Branch leaves large, 1.4-3 mm, semi-squarrose to squarrose, ovate and abruptly involute in distal portion, appearing cucullate with toothed apex, usually no more than 6 teeth; hyaline cells with 5 or more ringed, round to elliptical pores on convex surface, numerous pseudopores on concave surface with 3-ringed corner pores occurring in 3s at adjacent cell angles; chlorophyllous cells elliptic in transverse section, entirely included by hyaline cells, slightly nearer to convex surface. Sexual condition monoicous. Capsule with abundant pseudostomata. Spores 25-35 µm; finely papillose on proximal surface, coarsely papillose on distal surface with raised Y-mark sculpture; proximal laesura short, 0.3-0.5 spore radius.
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Description

Plants stout in dense or compact tufts, grayish to yellowish green or tinged with pinkish red. Stem cortex in 2–3 layers, hyaline cells large, thin-walled, without fibrils, with a single pore; central cylinder yellowish brown. Stem leaves 0.50–0.55 mm × 0.6 mm, triangular-ligulate, with rounded, involute, often lacerate apices; borders clearly widened at leaf base, occupying about 1/6 leaf width; hyaline cells rhomboidal, not divided, without fibrils, with pores only on the ventral surface. Branches short, stout, and crowded in fascicles of 4–6 with 2–3 spreading. Branch leaves 1.6–2.6 mm × 0.8–1.6 mm, broadly ovate, several times larger than stem leaves, concave with involute-concave apex; borders indistinct, sometimes denticulate along margins; hyaline cells densely fibrillose, with numerous pseudopores, 2–3 pores at the corners of each cell on the ventral surface, few to numerous rather larger pores at the ends on the dorsal surface; green cells in cross section small, narrowly oval to elliptic, centrally located or slightly widened toward the dorsal surface, enclosed by hyaline cells on both surfaces. Monoicous. Perigonial leaves not differentiated. Perichaetial leaves broadly ovate to oblong ovate, subsecund, concave. Spores yellowish brown, 32–35 µm in diameter.
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Diagnostic Description

Synonym

Sphagnum compactum var. imbricatum Warnstorf; S. rigidum (Nees & Hornschuch) Schimper
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Synonym

Sphagnum compactum var. imbricatum Warnst., Bot. Gaz. 15: 226. 1890.
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Type Information

Holotype for Sphagnum compactum var. expositum Maass
Catalog Number: US
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Preparation: Pressed specimen
Collector(s): C. F. Reed
Year Collected: 1964
Locality: Rt. 308, 5 mi. SE of Lewiston., Bertie, North Carolina, United States, North America
  • Holotype: Maass, W. 1966. Nova Hedwigia. 12 (1/2): 91.
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Ecology

Habitat

Habitat: on moist ground under forests or on rocks with dripping water in high mountains.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Sphagnum compactum

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 compactum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 3
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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Notes

Comments

Sphagnum compactum is usually easily recognized by its combination of golden brown color and involute, cucullate branch leaves. Sphagnum strictum is paler and usually strongly squarrose.
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Comments

This species is characterized by having very crowded, stout and blunt branches, very small stem leaves that are about 1/8 – 1/6 of the length of branch leaves, and by the green cells of branch leaves centrally located.
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