Bryum section Leucodontium

Bryum pallens, from here.

Belongs within: Bryaceae.

The section Leucodontium of the genus Bryum includes mosses found in watery situations, characterised by entirely pale outer peristome teeth (Dixon 1924).

Characters (from Dixon 1924): Innovations not julaceous; cells wider, more or less hexagonal-rhomboid. Leaves rather wide, obtuse or shortly pointed only, relatively flaccid, cells relatively wide. Capsules pale. Inner peristome usually perfect, appendiculate cilia mostly well-developed, as long as processes, with distinct transverse appendages; basal membrane not adherent to outer peristome. Outer teeth pale yellow throughout length, hardly thickened at base. Spores usually small.

<==Bryum sect. Leucodontium D24
    |--B. cyclophyllum [=Mnium cyclophyllum] D24
    |--B. duvalii D24
    |--B. fallax D24
    |--B. pallens Swartz 1801 D24, SK02 [incl. B. origanum D24]
    |    |--B. p. var. pallens D24
    |    |--B. p. var. euryphyllum Jones 1917 D24
    |    `--B. p. var. speciosum [incl. B. rubricosum] D24
    `--B. turbinatum [=Mnium turbinatum] D24
         |--B. t. var. turbinatum D24
         `--B. t. var. latifolium [=B. schleicheri var. latifolium, Mnium latifolium] D24

*Type species of generic name indicated

REFERENCES

[D24] Dixon, H. N. 1924. The Student's Handbook of British Mosses 3rd ed. V. V. Sumfield: Eastbourne.

[SK02] Streimann, H., & N. Klazenga. 2002. Catalogue of Australian Mosses. Flora of Australia Supplementary Series 17. Australian Biological Resources Study: Canberra.