Sphagnum warnstorfii
Sphagnum mendocinum
Warnstorf's peat-moss, Warnstorf's sphagnum
Mendocino sphagnum
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.
leaves broadly oblong-triangular, 1.2–1.5 mm; mostly appressed to stem;
apex obtuse;
hyaline cells narrow, usually nonseptate, efibrillose and aporose on convex surface near apex, on concave surface usually efibrillose with irregular pores along commissures in distal portion of leaf.
long and tapering, usually strongly 5-ranked.
with loosely imbricate leaves; often 5-ranked;
leaves little to somewhat elongated at distal end.
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.
ovate, ovate-lanceolate to lanceolate; 2–3.5 mm;
flat and undulate at margins and recurved at apex when dry; straight;
margins entire;
hyaline cells on concave surface with very numerous, small ringed or unringed pores along the commissures, 5–12 in distal portion of leaf and 20–27 in proximal portion, convex surface with 5–15 pores per cell in distal portion of leaf and 14–21 in proximal portion, pores usually without a ring; chlorophyllous cells triangular to trapezoidal in transverse section and exposed slightly on concave surface.
dioicous.
dioicous.
17–26 µm, finely papillose on both surfaces;
proximal laesura less than 0.5 spore radius.
ca. 30 µm;
very slightly roughened.
fascicles with 2 spreading and 1–2 pendent branches.
fascicles with 2 spreading and 2–3 pendent branches.;
branch stems green, with cortical cells in 1 layer with conspicuous necks.
Sphagnum warnstorfii
Sphagnum mendocinum
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.)
Sporophytes of Sphagnum mendocinum are uncommon. Although the unique branch leaf porosity makes it unmistakable microscopically, it may be confused with other species in the field. It is unusual ecologically in that it seems to overlap both the carpet- and lawn-forming habits—in other words it seems intermediate between S. recurvum and S. cuspidatum, in the broad sense. Among the species that it overlaps floristically, it is more robust and darker colored than S. pacificum. The latter also has an apiculate stem leaf compared to the more or less obtuse stem leaves of S. mendocinum. The more wet-growing S. majus var. majus and S. majus var. norvegicum, with which it slightly overlaps in habitat, have branch leaves that are strongly elongated at the distal branch ends whereas those of S. mendocinum are not. See also discussion under 40. S. obtusum. Sexual condition and spore characters are taken from from H. A. Crum (1984).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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