Flora of North America species comparison

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Sphagnum pacificum

Pacific sphagnum
Habit Plants moderate-sized and fairly strong-stemmed; green, yellow to yellowish brown; capitulum 5radiate in shade forms to hemispherical in open grown or drier growing forms.
Stem(s)

leaves triangular to lingulate-triangular, 0.8–1.3 mm; typically appressed;

apex acute to apiculate;

hyaline cells efibrillose and nonseptate to rarely septate.
Branches

straight and somewhat tapered, usually 5-ranked;

leaves little elongate at the distal branch end.
Branch leaves

ovate to narrowly ovate-lanceolate; (1.1–)1.4–1.8(–3.1) mm; slightly undulate and sharply recurved when dry, somewhat subsecund;

margins entire;

hyaline cells on convex surface with usually 1 round pore on apical end, on concave surface with wall thinnings in the cell ends and angles; chlorophyllous cells broadly triangular in transverse section and very deeply enclosed on the concave surface.
Sexual condition

dioicous.
Spores

19–25 µm; finely papillose on both surfaces.
Branch

fascicles with 2 spreading and 2–3 pendent branches.;

branch stems green but often reddish at proximal end, with cortex enlarged with conspicuous retort cells.

Sphagnum pacificum
Habitat Forested and open poor fen habitats, often as a ruderal species in extensive mats
Elevation low to moderate elevations
Distribution
from FNA
AK; OR; WA; BC
Discussion

Sporophytes in Sphagnum pacificum are uncommon. See discussion under 26. S. brevifolium. Characters of the spores are taken from Flatberg’s description.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 27, p. 74.
Parent taxa Sphagnaceae > Sphagnum > sect. Cuspidata
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. 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, S. wulfianum
Name authority Flatberg: Bryologist 92: 116, figs. 1–20. (1989)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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