Species description:
Genus name derived from the resemblance to a miniature Dicranum, and bearing the two-forked teeth characterizing that genus. Species name referring to the leaves that spread in all directions although, in fact, they mainly curve in one direction.
Reproduction:
Sporophytes abundant, maturing in early spring; the peristome teeth are bright red.
Distinguishing characteristics:
The asymmetric sporangium with an obliquely oriented mouth bearing bright red teeth and grooved surface when dry are distinctive. These features plus the silken, usually curved leaves and short, turf-forming plants are usually enough to separate this species.
Habit:
Forming short turfs of silken plants that are dark to light green.
Similar Species:
Other species of Dicranella resemble D. heteromalla but the sporophyte of the latter is distinctive (see above). Arctoa fulvella resembles D. heteromalla vegetatively, but the erect sporangium and the alpine or subalpine cliff crevice habitat will separate it. Kiaeria species also differ in habitat (usually on rocks) and sites (usually alpine or subalpine. Ditrichum species that occur in similar habitats have a straight erect sporangium that is never grooved.
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 Source: Some Common Mosses of BC
Synonyms and Alternate Names:
Dicranella heteromalla var. orthocarpa (Hedw.) A. Jaeger
Dicranella heteromalla var. sericea (Schimp.) Pfeff.