Dicranoweisia
Autoicous. Asexual reproduction occasionally by multicellular gemmae on leaf abaxial surface (not in Victoria). Cushions on rocks. Stem simple of forked, with rhizoids confined to base; central strand present. Leaves lanceolate, erect-spreading when moist, strongly contorted when dry; apex acute; costa subpercurrent to percurrent, at least 1/3 of leaf width at base or narrow (not in Victoria); margin entire, plane, recurved around midleaf or incurved (not in Victoria), without a border; laminal cells quadrate or rectangular, becoming longer toward base, smooth or with linear striations, bistratose in parts; alar cells not differentiated. Perichaetial leaves similar to vegetative leaves. Capsule erect, straight, ovoid, ellipsoid or cylindric, with a persistent or caducous (not in Victoria) annulus. Calyptra cucullate, smooth, glabrous. Operculum rostrate. Peristome of 16 teeth divided almost to half its length into two segments or teeth entire (not in Victoria).
Possibly three species, D. cirrrata (Hedw.) Lindb., from temperate regions of the Northern Hemisphere, D. africana Dixon from Africa, and dubiously D. microcarpa (Hook.f. & Wilson) Paris of Australia (see below).
Dicranoweisia microcarpa is maintained in Dicranoweisia rather than being transferred to Hymenoloma like, D. antarctica (Müll.Hal.) Kindb., because of its recurved leaf margins and its undifferentiated perichaetial leaves. However, it has a persistent annulus and linear striations of the cells, which are features shared with Hymenoloma and not Dicranoweisia (Werner et al. 2013). Determining the correct generic placement of this species would benefit from phylogenetic analyses of its chloroplast DNA sequences. Ochyra (1999) transferred this species to Brachydontium, however, this species is likely misplaced in that genus due to the mitrate calyptra of other Brachydontium species (Fedosov et al. 2017).
SpinningFedosov, V.; Fedorova, A.; Ignatova, E. (2017). On the taxonomic position of the genera Brachydontium Fürnr. and Campylostelium Bruch & Schimp. (Bryophyta Grimmiales). Journal of Bryology 39: 161–170.
Ochyra, R. (1999). Nomenclatural notes on mosses: XX. Brachydontium microcarpum, comb.nov. (Seligeriaceae) . Fragmenta Floristica et Geobotanica 44: 503.
Werner, O.; Rams, S.; Kučera, J.; Larraín, J.; Afonina, O.M.; Pisa, S.; Ros, R.M. (2013). New data on the moss genus Hymenoloma (Bryophyta), with special reference to H. mulahaceni. Cryptogamie, Bryologie 34(1): 13–30.
