E-Flora BC: Electronic Atlas of the Flora of British Columbia

Oligotrichum aligerum Mitt.
small hair-moss (oligotrichum moss)
Polytrichaceae

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

Introduction to the Bryophytes of BC

© Rosemary Taylor  Email the photographer   (Photo ID #41652)

E-Flora BC Static Map
Distribution of Oligotrichum aligerum
Click here to view the full interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.



Illustration Source: Some Common Mosses of BC

Species description:
Genus name meaning few hairs, in reference to the few hairs on the calyptra. Species name meaning winged, probably in reference to the ridges on the back of the midrib.
Reproduction:
Sporophytes frequent, maturing in summer, dark brown when mature. Male plants are usually in separate colonies, the bracts around the sex organs forming a reddish-brown cup.
Distinguishing characteristics:
The very small, often dark green to wine­red tinted, rigid plants with leaves showing ridge-like lamellae on both surfaces, combined with the disturbed mineral soil habitat are characteristic.
Habit:
Loose to dense, dark-green to reddish-brown turfs with the leaves divergent when humid but imbricate when dry.
Similar Species:
O. hercynicum is very similar but lacks the ridge-like lamellae on the back of the leaves. O. hercynicum is also alpine. Psilop­ilum cavifolim also lacks the ridges on the back of the leaf and the plants are extremely small (usually less than \14 the size of Oligotrichum). Psilopilum is extremely rare and is known from only the northern most part of the province.

Habitat / Range

Habitat
Frequent on the disturbed earth of banks and trail margins, also along water courses, from sea level to sub-alpine elevations.
Range
World Distribution

In western North America from southeastern Alaska to California and eastward to Idaho, also in Mexico; in eastern Asia from Japan, Taiwan and the Philippines.

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

General References