B. nepalense
Brachymenium
nepalense occurs
sporadically in the southern part of the Russian Far East (Primorsky
Territory and Amurskaya Province). It grows on deciduous tree
trunks, rocks and fallen logs. It is most common and abundant on
dead trunks in open places and at forest edges. The northernmost
Russian locality for B. nepalense is the
Commander Islands where it is found on cliff ledges in bird nesting
areas. It can be recognized by its bryoid habit and erect capsules
that have reduced peristomes with narrowly triangular or linear
exostome teeth, at times low endostomial basal membranes and often
rudimentary endostomial segments/cilia.
— Plants
small; leaves 0.5–1.0 mm long; plants dioicous, sporophytes
unknown in Russia [seta <5 mm long; capsules cylindrical] 2. B. exile
Brachymenium
exile is a
pantropical species that has been found only once on coastal cliffs
in the southern part of the Russian Far East (Primorsky Territory). This collection is the holotype for B. exiloides Bard. &
Cherd. The authors considered this species very close to B. exile, but differing
in having more shortly excurrent costae; less concave leaves; and no
axillary gemmae. But, in fact the holotype of B. exiloides has gemmae
(although not on every plant); furthermore, the leaves of B. exile can be quite
variable. Brachymenium
exiloides is here
synonymized with B. exile. Brachymenium
exile is
superficially similar to small plants of Bryum
argenteum, but
differs from it in having yellow-green rather than silvery-green
plants and much stouter, excurrent costae. Some species of
Anomobryum are
also similar to B. exile, but these
Anomobryum
species differ in having much longer leaf cells.