Plagiopus oederiana (Brid.) Limpr.
Oeder's apple-moss (Oeder's plagiopus moss)

Species Account Author: Wilf Schofield
Extracted from Some Common Mosses of BC

Introduction to the Bryophytes of BC


© Curtis Bjork     (Photo ID #24917)


E-Flora BC Static Map

Distribution of Plagiopus oederiana
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Species Information

Species description:
Genus name meaning oblique footed, perhaps in reference to the seta and its connection to the sporangium in the original specimen upon which the name is based. Species named in honour of G.C. von Oeder (1728-1791), a Danish botanist who first recognized this moss as distinctive.
Sporophytes frequent, maturing in spring; dark brown when ripe.
Distinguishing characteristics:
The roughly three-ranked leaf arrangement, the dark green leaves that are not glossy, the calcareous habitat and spherical sporangia are useful features.
Forming short to tall, dark green turfs of unbranched plants, sometimes with notably three-ranked leaf arrangement (the stem is triangular in cross section).
Similar Species:
All species of Bartramia have somewhat glossy, yellowish-green, rather than dull dark green leaves as in Plagiopus. In Anacolia menziesii the plants are heavily invested with rhizoids and the leaves are little altered when dry and golden yellow-green compared to the dark green of Plagiopus.


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration SourceSome Common Mosses of BC

Habitat and Range

On humid calcium-rich cliff shelves.
World Distribution

Circumpolar in the Northern Hemisphere; in North America extending southward in the east to Virginia and Iowa, in the west to Oregon and eastward to Colorado and Utah.


Synonyms and Alternate Names:
Bartramia oederi Brid.
Plagiopus oederi (Brid.) Limpr.
Plagiopus oederi var. alpina (Schwaegr.) Torre & Sarnth.