Flora of North America species comparison

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Sphagnum oregonense

Oregon sphagnum
Habit Plants small, green to light brown; capitulum moderately well defined.
Stem(s)

leaves lingulate, 1–1.2 mm, apex entire to somewhat erose;

hyaline cells non-septate;

fibrillose and porose in apical region.
Branches

slender with small spreading leaves.
Branch leaves

ovate-lanceolate, 1.4–1.6 mm, straight to slightly subsecund, weakly undulate, often recurved in capitulum branches;

hyaline cells on convex surface with up to 5 small round faint pores per cell in the basal portion of the cell and free from the cell margins, concave surface aporose.
Sexual condition

unknown.
Capsule

not seen.
Spores

not seen.
Branch

fascicles with 2 spreading and 2 pendent branches.

Sphagnum oregonense
Habitat Fens
Elevation high elevations
Distribution
from FNA
OR
Discussion

Sphagnum oregonense is currently known only from the type locality. Sporophytes of it are unknown. It is associated with other minerotrophic bryophytes such as Meesia triquetra, Calliergon cordifolium, and Campylium polygamum. This is a curious species that has an obvious close relationship with sect. Cuspidata. When wet it is similar in appearance to S. subsecundum but upon drying the sightly undulate and recurved branch leaves give it the charactereistic appearance of this section. The branch leave porosity is also more similar to that of species in sect. Cuspidata than that found in sect. Subsecunda.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 27, p. 82.
Parent taxa Sphagnaceae > Sphagnum > sect. Subsecunda
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. 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, S. wulfianum
Name authority Andrus: Bryologist 110: 123, figs. 1–4. (2007)
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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