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Warnstorf's peat-moss, Warnstorf's sphagnum

wulf's sphagnum

Habit Plants small or less frequently moderate-sized, slender, capitulum flat-topped and stellate; green or dark purplish red and green, rarely green throughout, often with a distinctive bluish cast when dry.
Stem(s)

leaves triangular-lingulate to lingulate, 1.1–1.4 mm, apex broad-rounded to narrowly truncate, border very broad at base (more than 0.3 width);

hyaline cells efibrillose, rhombic, mostly 1-septate but can be non-septate.

Branches

long and tapering, usually strongly 5-ranked.

Branch leaves

ovate-lanceolate, 0.9–1.4 mm, concave, straight, apex involute;

hyaline cells on convex surface with very small ringed pores (less than 0.25 cell width) along commissures near apex, changing abruptly to large elliptical pores (0.4 cell width or more) basally, concave surface with large round pores in proximal margins and leaf base.

with chlorophyllous cells often with faint papillae on interior walls.

Sexual condition

dioicous.

Spores

17–26 µm, finely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

Branch

fascicles with 2 spreading and 1–2 pendent branches.

Sphagnum warnstorfii

Sphagnum wulfianum

Phenology Capsules mature late summer to early autumn.
Habitat Minerotropic, hygrophytic, frequent in medium to rich fens Coniferous forests, and occasionally in Alnus or Salix karrs
Elevation low to moderate elevations low to moderate elevations
Distribution
from FNA
AK; CO; CT; IA; ID; IN; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OH; PA; RI; SD; UT; VT; WA; WI; WY; AB; BC; MB; NB; NF; NS; NT; NU; ON; QC; SK; YT; Greenland; Eurasia
[WildflowerSearch map]
from FNA
CT; IL; IN; MA; ME; MI; MN; NH; NY; OH; PA; RI; VT; WI; AB; BC; MB; NB; NF; NS; ON; QC; Greenland; Eurasia
Discussion

Sporophytes are uncommon in Sphagnum warnstorfii. This is one of the most minerotrophic species of the flora, is hygrophytic, and has a very broad niche. The most commonly associated vascular plants are Thuja occidentalis, Abies balsamea, and Picea rubens. Bryophytes typically associated with it are S. centrale, S. squarrosum, S. teres, Calliergonella cuspidata, and Campylium stellatum. This species is perhaps most similar to S. bartlettianum, with which it has small range overlap. Sphagnum warnstorfii has a shorter and less sharply pointed stem leaf and the red color with a characteristic bluish caste compared to the crimson red of S. bartlettianum. See also discussion under 81. S. russowii and 86. S. talbotianum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

The sporophytes of Sphagnum wulfianum are moderately common. This is the most dry-growing species in North America, typically growing in association with Sphagnum centrale, S. girgensohnii, S. russowii, and S. squarrosum. It is easily recognized as the only species that regularly has more than six branches per fascicle. The Lycopodium clavatum-like growth habit and conifer swamp habitat along with the strongly 5-ranked branch leaves make it even easier to recognize in the field.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 27, p. 101. FNA vol. 27, p. 85.
Parent taxa Sphagnaceae > Sphagnum > sect. Acutifolia Sphagnaceae > Sphagnum > sect. Polyclada
Sibling taxa
S. affine, S. alaskense, S. andersonianum, S. angermanicum, S. angustifolium, S. annulatum, S. aongstroemii, S. arcticum, S. atlanticum, S. austinii, S. balticum, S. bartlettianum, S. beothuk, S. bergianum, S. brevifolium, S. capillifolium, S. carolinianum, S. centrale, S. compactum, S. contortum, S. cribrosum, S. cuspidatum, S. cyclophyllum, S. fallax, S. fimbriatum, S. fitzgeraldii, S. flavicomans, S. flexuosum, S. fuscum, S. girgensohnii, S. henryense, S. imbricatum, S. inexspectatum, S. inundatum, S. isoviitae, S. jensenii, S. junghuhnianum, S. kenaiense, S. lenense, S. lescurii, S. lindbergii, S. macrophyllum, S. magellanicum, S. majus, S. mcqueenii, S. mendocinum, S. microcarpum, S. mirum, S. mississippiense, S. molle, S. obtusum, S. oregonense, S. orientale, S. pacificum, S. palustre, S. papillosum, S. perfoliatum, S. perichaetiale, S. platyphyllum, S. portoricense, S. pulchrum, S. pylaesii, S. quinquefarium, S. recurvum, S. riparium, S. rubellum, S. rubiginosum, S. rubroflexuosum, S. russowii, S. sitchense, S. splendens, S. squarrosum, S. steerei, S. strictum, S. subfulvum, S. subnitens, S. subsecundum, S. subtile, S. talbotianum, S. tenellum, S. tenerum, S. teres, S. torreyanum, S. trinitense, S. tundrae, S. viride, S. wilfii, S. wulfianum
S. affine, S. alaskense, S. andersonianum, S. angermanicum, S. angustifolium, S. annulatum, S. aongstroemii, S. arcticum, S. atlanticum, S. austinii, S. balticum, S. bartlettianum, S. beothuk, S. bergianum, S. brevifolium, S. capillifolium, S. carolinianum, S. centrale, S. compactum, S. contortum, S. cribrosum, S. cuspidatum, S. cyclophyllum, S. fallax, S. fimbriatum, S. fitzgeraldii, S. flavicomans, S. flexuosum, S. fuscum, S. girgensohnii, S. henryense, S. imbricatum, S. inexspectatum, S. inundatum, S. isoviitae, S. jensenii, S. junghuhnianum, S. kenaiense, S. lenense, S. lescurii, S. lindbergii, S. macrophyllum, S. magellanicum, S. majus, S. mcqueenii, S. mendocinum, S. microcarpum, S. mirum, S. mississippiense, S. molle, S. obtusum, S. oregonense, S. orientale, S. pacificum, S. palustre, S. papillosum, S. perfoliatum, S. perichaetiale, S. platyphyllum, S. portoricense, S. pulchrum, S. pylaesii, S. quinquefarium, S. recurvum, S. riparium, S. rubellum, S. rubiginosum, S. rubroflexuosum, S. russowii, S. sitchense, S. splendens, S. squarrosum, S. steerei, S. strictum, S. subfulvum, S. subnitens, S. subsecundum, S. subtile, S. talbotianum, S. tenellum, S. tenerum, S. teres, S. torreyanum, S. trinitense, S. tundrae, S. viride, S. warnstorfii, S. wilfii
Synonyms S. warnstorfianum
Name authority Russow: Sitzungs.-Ber. Naturf.-Ges. Univ. Dorpat 8: 315. (1888) Girgensohn: Arch. Naturk. Liv- Ehst- Kurlands, Ser. 2, Biol. Naturk. 2: 173. (1860)
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