Species profile Last updated: 08.08.2026
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Sphagnum acutifolioides Warnst.

Reproductive morphology Dioecious
Taxonomic group Subgenus Subsecunda
Contents

Source: http://www.efloras.org/florataxon.aspx?flora_id=4&taxon_id=240000094

Plants robust, up to 15 cm high, whitish green to brownish yellow, shiny when dry.

Stem cortex in 2–3 layers, hyaline cells thin-walled, without fibrils and pores; central cylinder yellowish red.

Stem leaves 1.3–1.4 mm × 0.7–0.8 mm, isosceles-triangular, with dentate, narrow and blunt apices; borders differentiated, slightly widened at base; hyaline cells narrowly rhomboidal below, short-rhomboidal above, mostly divided, without fibrils, sometimes with the traces of fibrils in the upper cells, numerous irregular pores on the ventral surface.

Branch leaves 1.4–1.7 mm × 0.6–0.8 mm, broadly ovate-lanceolate at base, abruptly narrowed to acuminate apex, margins involute above, dentate at the apex; borders narrowed, hyaline cells densely fibrillose, with numerous large, rounded pores near the margins on the ventral surface, fewer near the central parts, small pores in the upper cells and gradually enlarged to elliptic pores below on the dorsal surface, with large, rounded pores near margins at base; green cells in cross section isosceles-triangular, exposed on the ventral surface, enclosed by hyaline cells on the dorsal surface.

Dioicous.

Sporophytes not seen.

Identification

Identification features

Microscopic

Special characteristics

similar to Sphagnum junghuhnianum differs from the latter in having the divided hyaline cells of stem leaves often without distinct fibrils and pores and in having branch leaves broadly ovate with abruptly acuminate apices. In contrast, S. junghuhnianum has undivided hyaline cells of stem leaves with fibrils and pores and has branch leaves narrowly ovate with gradually acuminate apices.

Habitat

in bogs, on moist rocky soil or rocks near streams with dripping water under coniferous forests;

Distribution notes

Taxonomy

Distribution regions

Distribution Map

The demarcation of regions follows Margadant & Florschütz (1967), adapted with modifications from Sjögren (2001). · View source map on uMap

Observation map

Known observation points for this species. iNaturalist export records can be shown or hidden separately.

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Sources

Literature & Papers

Comparative analysis of plastome structure in Sphagnum species from China

2025 Xian-Lin Guo, Fu-Min Xie, Chao-Jie Wang, Yi-Hang Ding, Wen-Chao Yan, Kai Fang & Huai Chen

"Phylogenetic analysis supported the placement of S. ovatum, S. subsecundum, and S. acutifolioides in subgenus Subsecunda[...]"

Open

The Sphagnum species of the world

2019 Michaelis, D. Bibliotheca Botanica 162, 1–435
Open

Beiträge zur Kenntniss exotischer Sphagna

1890 Warnstorf, C. Hedwigia 29(4), 192
Open
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