Muellerobryum whiteleggei, photographed by Niels Klazenga.

Belongs within: Hypnales.

The Pterobryaceae are a family of mosses found primarily in tropical habitats, where they are mostly epiphytic. The circumscription of the family is somewhat uncertain; a number of tropical taxa have been included here after being excluded from other families (A. Newton).

Characters (from A. Newton, Bryophyte Flora of North America): Frondose habit, frequently with a differentiated stipe; uniseriate filamentous pseudoparaphyllia; stomates absent; peristome reduced, often with prostome, highly reduced endostome.

    |--Penzigiella cordata N02
    |--Pireella filicina J87
    |--Muellerobryum Fleischer 1905 SK02
    |    `--M. whiteleggei (Broth.) Fleischer 1905 (see below for synonymy) SK02
    |--Neolindbergia Fleischer 1908 SK02
    |    `--N. vitiensis (Bartram) Enroth 1991 [incl. N. plicata Stark & Buck 1986, Forsstroemia rigida] SK02
    |--Pterobryidium Broth. & Watts 1918 SK02
    |    `--P. australe Broth. & Watts 1918 SK02
    |--Pulchrinodus Allen 1987 SK02
    |    `--P. inflatus (Hooker & Wilson) Allen 1987 SK02
    |--Rhabdodontium Broth. 1906 SK02
    |    `--R. buftonii (Broth. & Geh.) Broth. 1906 [=Calyptothecium buftonii, Trachyloma buftonii] SK02
    |--Cryptogonium (Müll.Hal.) Hampe 1880 SK02
    |    `--C. phyllogonioides (Sull.) Isov. 1986 [=Pursellia phyllogonioides] SK02
    |--Pterobryon Hornsch. 1840 SK02
    |    |--P. australiense Dixon 1950 SK02
    |    |--P. densum Hornsch. 1840 JR-SM-G05
    |    `--P. longicuspis [=Symphysodon longicuspis] SK02
    `--Calyptothecium Mitt. 1868 SK02
         |--C. acutum (Mitt.) Broth. 1904 [=Pterobryon acutum] SK02
         |--C. australinum (Mitt.) Paris 1904 [=Pterobryon australinum] SK02
         |--C. cuspidatum SK02
         |--C. extensum Fleischer 1908 [incl. Garovaglia brisbanica Paris 1896 (n. n.)] SK02
         |--C. humile (Mitt.) Broth. 1904 [=Pterobryon humile] SK02
         |--C. ramosii [incl. C. caudatum Bartram 1939] SK02
         |--C. recurvulum (Broth.) Broth. 1904 (see below for synonymy)
         `--C. subecostatum Dixon 1942 SK02

Nomen nudum: Pterobryon recurvulum Müll.Hal. ex Bailey 1890 SK02

Calyptothecium recurvulum (Broth.) Broth. 1904 [=Trachyloma recurvulum, Neckera recurvula; incl. Pilotrichella recurvula Müll.Hal. 1902] SK02

Muellerobryum whiteleggei (Broth.) Fleischer 1905 [=Pterobryon whiteleggei; incl. Armitia bescherelloides (nom. inv.), Bescherellia pygmaea (nom. inv.)] SK02

*Type species of generic name indicated


[JR-SM-G05] Johansen, R. M., A. P. Retana-Salazar & A. Mojica-Guzmán. 2005. A review of the New World bryophyte-feeding genus Wegenerithrips Johansen 1983 (Insecta, Thysanoptera, Thripidae). Senckenbergiana Biologica 85 (1): 61-83.

[J87] Judd, W. S. 1987. Floristic study of Morne La Visite and Pic Macaya National Parks, Haiti. Bulletin of the Florida State Museum – Biological Sciences 32 (1): 1-136.

[N02] Negi, H. R. 2002. Abundance and diversity of moss communities of Chopta-Tunganath in the Garhwal Himalaya. Journal of the Bombay Natural History Society 99 (3): 418-433.

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

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