Desmatodon cernuus, from here.

Belongs within: Bryophyta.
Contains: Didymodon, Trichostomum, Barbula, Weissia, Tortula.

The Pottiaceae is a large, diverse family of mosses found worldwide, divided between about eighty genera. Members of the family are commonly small and found in harsh environments such as rocks and disturbed soil, primarily in calcareous habitats. Members of the tribe Trichostomeae usually have lanceolate, tapering leaves whereas members of the Pottieae more commonly have broad leaves. The genus Cinclidotus has large, solid, bordered leaves and is found in aquatic or riparian habitats (Dixon 1924).

Characters (from Smith & Smith 2004): Plants usually small, often xeromorphic. Leaves linear to spathulate or ovate, acuminate to rounded; margins entire to dentate, usually unbordered; costa usually strong, in section with one or two stereid bands; basal cells rectangular, more or less hyaline, cells above hexagonal or quadrate, often papillose, sometimes obscure. Setae very short to long, usually straight; capsules erect or inclined, globose to cylindrical, straight or curved, cleistocarpous or dehiscent; peristome absent, rudimentary, imperfect or perfect, teeth straight or spirally coiled, entire, perforated or variously cleft or divided into filiform segments.

<==Pottiaceae [Tortulaceae]
    |--Cinclidotus [Cinclidoteae] D24
    |    |--C. brebissoni [=Tortula brebissoni; incl. Barbula mucronata, Cinclidotus riparius var. terrestris] D24
    |    `--C. riparius D24
    |--Trichostomeae D24
    |    |--Trichostomum SK02
    |    |--Barbula D24
    |    |--Weissia D24
    |    |--Pleurochaete D24
    |    |    |--P. luteola J87
    |    |    `--P. squarrosa C74 [=Barbula squarrosa D24]
    |    `--Leptodontium (Müll.Hal.) Hampe ex Lindb. 1864 D24, SK02
    |         |--L. flexifolium [=Bryum flexifolium, Didymodon flexifolius] D24
    |         |--L. gemmascens [=Didymodon gemmascens; incl. D. flexifolius var. gemmiferus] D24
    |         |--L. interruptum (Mitt.) Broth. 1902 SK02
    |         |--L. paradoxum Stone & Scott 1981 SK02
    |         |--L. recurvifolium [=Bryum recurvifolium, Didymodon recurvifolius] D24
    |         `--L. viticulosoides (Palisot de Beauvois) Wijk & Margad. 1960 (see below for synonymy) SK02
    `--Pottieae D24
         |--Tortula SK02
         |--Aloina Kindb. 1882 D24, SK02
         |    |--A. aloides (Schultz) Kindb. 1883 SK02 [=Trichostomum aloides D24, Barbula aloides D24]
         |    |    |--A. a. var. aloides SK02
         |    |    `--A. a. var. ambigua (Bruch & Schimp.) Craig 1939 SK02 (see below for synonymy)
         |    |--A. bifrons (De Not.) Delgad. 1973 SK02
         |    |--‘Tortula’ brevirostris [=Barbula brevirostris] D24
         |    |--A. rigida (Hedw.) Limpr. 1888 SK02 [=Barbula rigida D24, Tortula rigida D24; incl. T. stellata D24]
         |    `--A. sullivaniana (Müll.Hal.) Broth. 1902 (see below for synonymy) SK02
         |--Acaulon Müll.Hal. 1847 D24, SK02
         |    |--A. casasianum M08
         |    |--A. chrysacanthum Stone 1976 SK02
         |    |--A. eremicola Stone 1979 SK02
         |    |--A. granulosum Stone 1988 SK02
         |    |--A. integrifolium Müll.Hal. 1855 (see below for synonymy) SK02
         |    |--A. leucochaete Stone 1976 SK02
         |    |--A. mediterraneum Limpr. 1885 [=A. muticum var. mediterraneum] SK02
         |    `--A. triquetrum (Spruce) Müll.Hal. 1847 SK02 [=Phascum triquetrum D24, Sphaerangium triquetrum D24]
         |--Pterygoneurum Jur. 1897 D24, SK02
         |    |--‘Tortula’ lamellata [incl. Barbula cavifolia] D24
         |    |--P. macleanum Warnst. 1916 [incl. P. kemsleyi Willis 1954] SK02
         |    |--P. ovatum (Hedw.) Dixon 1934 SK02
         |    |--‘Tortula’ pusilla [=Bryum pusillum; incl. Pottia cavifolia] D24
         |    |    |--T. p. var. pusilla D24
         |    |    |--T. p. var. incana D24
         |    |    `--T. p. var. perraldieri D24
         |    `--P. subsessile M08
         `--Desmatodon Brid. 1819 D24, SK02
              |--‘Tortula’ canescens [=Barbula canescens] D24
              |--D. cernuus SG-C01 [=Tortula cernua D24]
              |--‘Tortula’ cuneifolia [=Bryum cuneifolium, Barbula cuneifolia] D24
              |--‘Tortula’ suberecta [incl. Desmatodon obliquus] D24
              |--D. systylius [=Tortula systylia] D24
              `--‘Tortula’ vahliana [=Barbula vahliana] D24
                   |--T. v. var. vahliana D24
                   `--T. v. var. subflaccida [incl. T. oblongifolia] D24

Pottiaceae incertae sedis:
  Timmiella barbuloides FHH01
  Oxystegus tenuirostris N02
  Astomum Hampe 1837 SK02
  Phasconica Müll.Hal. 1882 SK02
  Pseudocrossidium Williams 1915 SK02
    `--P. revolutum M09
  Molendoa sendtneriana J87
  Semibarbula orientalis (Weber) Wijk & Margad. 1959 [=Trichostomum orientale Weber 1804] SG07
  Calymperastrum Stone 1986 SK02
    `--C. latifolium (Hampe) Stone 1986 [=Calymperes latifolium] SK02
  Chenia Zander 1989 non Sheng 1963 (ICZN) [incl. Leptophascum] SK02
    `--C. leptophylla (Müll.Hal.) Zander 1993 (see below for synonymy) SK02
  Gymnostomiella Fleischer 1904 SK02
    `--G. vernicosa (Hooker) Fleischer 1904 [=Gymnostomum vernicosum Hooker 1836] B05
  Phascopsis Stone 1980 SK02
    `--P. rubicunda Stone 1980 SK02
  Stonea Zander 1989 SK02
    `--S. oleaginosa (Stone) Zander 1989 [=Tortula oleaginosa Stone 1978] SK02
  Hymenostylium Brid. 1827 J87, SK02
    `--H. recurvirostre (Hedw.) Dixon 1933 SK02
  Gymnostomum Nees & Hornsch. 1823 SK02
    |--G. aeruginosum Smith 1804 SK02
    |--G. calcareum Nees & Hornsch. 1823 SK02 (see below for synonymy)
    `--G. viridulum [=Weisia calcarea var. viridula non W. viridula] D24
  Pseudosymblepharis Broth. 1924 SK02
    |--P. bombayensis (Müll.Hal.) Sollman 1996 [incl. P. angustata (Mitt.) Hilp. 1933] SK02
    |--P. schimperianus J87
    `--P. subduriuscula (Müll.Hal.) Chen 1941 SK02
  Crossidium Jur. 1882 SK02
    |--C. davidai Catches. 1980 SK02
    `--C. geheebii (Broth.) Broth. 1902 [=Barbula geheebii (nom. inv.)] SK02
  Hennediella Paris 1896 SK02
    |--H. heimii (Hedw.) Zander 1993 SK02 [=Gymnostomum heimii D24, Pottia heimii (Hedw.) Hampe 1837 SK02]
    `--H. stanfordensis (Steere) Blockeel 1990 [=Tortula stanfordensis Steere 1951] SK02
  Splachnobryum Müll.Hal. 1869 SK02
    |--S. obtusum (Brid.) Müll.Hal. 1869 (see below for synonymy) SK02
    `--S. wiemansii Fleischer 1904 SK02
  Uleobryum Broth. 1906 SK02
    |--U. occultum (Roth) Zander 1993 [incl. U. curtisii Stone 1984] SK02
    `--U. peruvianum Broth. 1906 SK02
  Trachycarpidium Broth. 1901 SK02
    |--T. brisbanicum (Müll.Hal.) Stone 1975 (see below for synonymy) SK02
    `--T. verrucosum SK02
  Hydrogonium SG07
    |--H. arcuatum (Griffith) Wijk. & Marg. 1958 [=Barbula arcuata Griffith 1842] B05
    `--H. consanguineum (Thwaites & Mitt.) Hilp. 1933 [=Tortula consanguinea Thwaites & Mitt. 1873] SG07
  Anoectangium Schwägr. 1811 SK02
    |--A. aestivum (Hedw.) Mitt. 1869 SK02
    |--A. bellii Broth. ex Dixon 1926 SK02
    |--A. compactum [=Gymnostomum compactum; incl. Pleurozygodon aestivus] D24
    |    |--A. c. var. compactum D24
    |    `--A. c. var. pellucidum [incl. A. marinum] D24
    `--A. thomsonii N02
  Hyophila Bridel 1827 SK02
    |--H. involuta (Hooker) Jaeger 1873 SG07 (see below for synonymy)
    |--H. javanica (Nees & Blume) Brid. 1827 SK02
    `--H. rosea Williams 1914 SK02
  Calyptopogon (Mitt.) Broth. 1902 SK02
    `--C. mnioides (Schwägr.) Broth. 1902 (see below for synonymy) SK02
         |--C. m. var. mnioides SK02
         `--‘Streptopogon’ m. var. prostratus [=Tortula prostrata] SK02
  Goniomitrium Hooker & Wilson 1846 SK02
    `--G. acuminatum Hooker & Wilson 1846 SK02
         |--G. a. ssp. acuminatum [incl. Physcomitrium goniomitrium] SK02
         `--G. a. ssp. enerve (Hooker & Wilson) Fife & Seppelt 2001 (see below for synonymy) SK02
  Microbryum Schimp. 1860 SK02
    |--M. brevicaule (Taylor) Zander 1993 (see below for synonymy) SK02
    |--M. davallianum (Smith) Zander 1993 [=Pottia davalliana (Smith) Jensen 1923] SK02
    `--M. starckeanum (Hedw.) Zander 1993 (see below for synonymy) SK02
  Triquetrella Müll.Hal. 1897 SK02
    |--T. fragilis Müll.Hal. 1897 SK02
    |--T. papillata (Hooker & Wilson) Broth. 1902 (see below for synonymy) SK02
    |--T. richardsiae Müll.Hal. 1897 SK02
    `--T. tasmanica (Broth.) Granzow 1989 (see below for synonymy) SK02
  Tortella (Lind.) Limpr. 1888 SK02
    |--T. dakinii Willis 1955 SK02
    |--T. densa M08
    |--T. flavovirens (Bruch ex Muell.) Broth. 1902 SK02
    |--T. inclinata (Hedw.) Limpr. 1888 SK02 (see below for synonymy)
    |--T. knightii (Mitt.) Broth. 1902 (see below for synonymy) SK02
    |--T. novae-valesiae Broth. 1916 SK02
    `--T. tortuosa M08
  Tetrapterum Hampe ex Jaeger 1869 SK02
    |--T. brachypelma (Müll.Hal.) Broth. 1924 (see below for synonymy) SK02
    |--T. cylindricum (Taylor) Jaeger 1869 (see below for synonymy) SK02
    |--T. sullivanii (Müll.Hal.) Broth. 1924 (see below for synonymy) SK02
    |--T. tetrapteroides (Müll.Hal.) Broth. 1924 (see below for synonymy) SK02
    `--T. weymouthii (Müll.Hal.) Broth. 1924 (see below for synonymy) SK02
  Didymodon SK02
  Bryoerythrophyllum Chen 1941 SK02
    |--B. binnsii (R.Br.bis) Wijk & Margad. 1959 (see below for synonymy) SK02
    |--B. dentatum N02
    |--B. jamesonii (Taylor) Crum 1957 SK02
    |--B. recurvirostre (Hedw.) Chen 1941 (see below for synonymy) SK02
    |--B. recurvum N02
    |--B. rotundatum (Lindb. & Arnell) Chen 1941 SK02
    `--B. wallichii [incl. Barbula zygodontifolia] SK02
  Pharomitrium subsessile D24
  Rhamphidium veitchii B57

Nomina nuda: Acaulon holtii D24
             Desmatodon pachyneuroides Müll.Hal. 1901 [=Trichostomum pachyneuroides Watts & Whitel. 1902] SK02
             Desmatodon pachyneurus Müll.Hal. 1901 [=Trichostomum pachyneurus Watts & Whitel. 1902] SK02
             Hyophila angustifolia Müll.Hal. ex Kindb. 1889 SK02
             Hyophila muelleri Watts & Whitel. 1902 SK02
             Hyophila pugionifolia Müll.Hal. ex Kindb. 1888 [=Weissia pugionifolia Müll.Hal. ex Bailey 1890] SK02
             Leptodontium australe Müll.Hal. 1901 SK02
             Tortella perhumilis Broth. ex Bailey 1896 SK02
             Triquetrella albicuspis Broth. ex Watts 1906 SK02
             Triquetrella triquetra Müll.Hal. ex Kindb. 1889 SK02

Acaulon integrifolium Müll.Hal. 1855 [=Sphaerangium integrifolium; incl. A. apiculatum, Phascum apiculatum (nom. illeg.), Sphaerangium apiculatum, Acaulon apiculatum var. aristatum, A. integrifolium var. aristatum (Willis) Willis 1957, A. austromuticum, A. sullivanii, S. sullivanii, Phascum apiculatum var. turgidum, Acaulon apiculatum var. turgidum, Sphaerangium apiculatum var. turgidum] SK02

Aloina aloides var. ambigua (Bruch & Schimp.) Craig 1939 SK02 [=Barbula ambigua D24, Tortula ambigua D24; incl. T. ericaefolia D24]

Aloina sullivaniana (Müll.Hal.) Broth. 1902 [=Barbula sullivaniana, Tortula sullivaniana; incl. B. lamellosa (n. n.), T. lamellosa (n. n.)] SK02

Bryoerythrophyllum binnsii (R.Br.bis) Wijk & Margad. 1959 [=Didymodon binnsii, Erythrobarbula binnsii; incl. Barbula glaucula Broth. 1916 (preoc.)] SK02

Bryoerythrophyllum recurvirostre (Hedw.) Chen 1941 [=Barbula recurvirostris, Didymodon recurvirostris, Erythrobarbula recurvirostris, Erythrophyllum recurvirostre; incl. Barbula glabriuscula, Didymodon rubellus (nom. illeg.), Trichostomum subrubellum] SK02

Calyptopogon mnioides (Schwägr.) Broth. 1902 [=Streptopogon mnioides, Tortula mnioides; incl. Barbula crispata, Calyptopogon crispatus, Streptopogon crispatus, Tortula crispata, Barbula wilhelmii, Calyptopogon wilhelmii, Streptopogon wilhelmii, Tortula wilhelmii] SK02

Chenia leptophylla (Müll.Hal.) Zander 1993 [=Phascum leptophyllum Müll.Hal. 1888, *Leptophascum leptophyllum; incl. Tortula evanescens Broth. 1916, T. rhizophylla (Sak.) Iwats. & Saito 1972] SK02

Goniomitrium acuminatum ssp. enerve (Hooker & Wilson) Fife & Seppelt 2001 [=G. enerve Hooker & Wilson 1846, Physcomitrium enerve] SK02

Gymnostomum calcareum Nees & Hornsch. 1823 SK02 [=Mollia calcarea D24, Weissia calcarea (preoc.) SK02; incl. G. calcareum var. australe SK02, G. calcareum var. longifolium SK02, Eucladium tasmanicum SK02]

Hyophila involuta (Hooker) Jaeger 1873 SG07 [=Gymnostomum involutum Hooker 1819 SG07; incl. H. micholitzii SK02]

Leptodontium viticulosoides (Palisot de Beauvois) Wijk & Margad. 1960 [incl. Trichostomum subdenticulatum, L. whitteronii Broth. ex Stone & Scott 1981 (nom. inv.)] SK02

Microbryum brevicaule (Taylor) Zander 1993 [=Gymnostomum brevicaule, Pottia brevicaulis (Taylor) Müll.Hal. 1849] SK02

Microbryum starckeanum (Hedw.) Zander 1993 [=Pottia starckeana (Hedw.) Müll.Hal. 1849; incl. Anacalypta cespitulosa, P. cespitulosa, P. caespitulosa (l. c.)] SK02

Splachnobryum obtusum (Brid.) Müll.Hal. 1869 [incl. S. baileyi Broth. 1888, S. geheebii Fleischer 1904, S. indicum Hampe & Müll.Hal. 1872] SK02

Tetrapterum brachypelma (Müll.Hal.) Broth. 1924 [=Phascum brachypelma, Astomum brachypelma, Systegium brachypelma] SK02

Tetrapterum cylindricum (Taylor) Jaeger 1869 [=Astomum cylindricum, Phascum tetragonum var. cylindricum, Systegium cylindricum, Tetrapterum capense var. cylindricum; incl. T. australe (nom. inv.)] SK02

Tetrapterum sullivanii (Müll.Hal.) Broth. 1924 [=Phascum sullivanii, Astomum sullivanii (preoc.), Pleuridium sullivanii, Systegium sullivanii] SK02

Tetrapterum tetrapteroides (Müll.Hal.) Broth. 1924 [=Phascum tetrapteroides, Astomum tetrapteroides, Systegium tetrapteroides] SK02

Tetrapterum weymouthii (Müll.Hal.) Broth. 1924 [=Phascum weymouthii, Astomum weymouthii, Systegium weymouthii] SK02

Tortella inclinata (Hedw.) Limpr. 1888 SK02 [=Barbula inclinata SK02, Mollia inclinata D24, Tortula inclinata D24, Trichostomum inclinatum D24; incl. Tortula nervosa (preoc.) SK02]

Tortella knightii (Mitt.) Broth. 1902 [=Tortula knightii, Barbula knightii; incl. B. nanotortuosa, Tortella nanotortuosa] SK02

Trachycarpidium brisbanicum (Müll.Hal.) Stone 1975 [=Acaulon brisbanicum, Astomum brisbanicum, Sphaerangium brisbanicum; incl. As. wattsii] SK02

Triquetrella papillata (Hooker & Wilson) Broth. 1902 [=Didymodon papillatus, Leptodontium papillatum; incl. Triquetrella filiformis, Zygodon preissianus, T. preissiana (Hampe) Müll.Hal. 1897, Z. preissii (l. c.), Leskea rubricaulis, Triquetrella scabra, Zygodon scaber (n. n.)] SK02

Triquetrella tasmanica (Broth.) Granzow 1989 [=Anomodon tasmanicus Broth. 1900, Anoectangium tasmanicum (nom. inv.); incl. Triquetrella curvifolia] SK02

*Type species of generic name indicated


[B57] Bartram, E. B. 1957. Additional Fijian mosses, III. Journal of the Washington Academy of Sciences 46 (12): 392–396.

[B05] Bhattacharyya, P. K. 2005. Bryophyte flora of Barddhaman district, West Bengal. Bulletin of the Botanical Survey of India 47 (1–4): 11–42.

[C74] Coineau, Y. 1974. Éléments pour une monographie morphologique, écologique et biologique des Caeculidae (Acariens). Mémoires du Muséum National d'Histoire Naturelle, nouvelle série, Série A, Zoologie 81: 1–299, 24 pls.

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

[FHH01] Frey, W., M. Hofmann & H. H. Hilger. 2001. The gametophyte-sporophyte junction: unequivocal hints for two evolutionary lines of archegoniate land plants. Flora 196: 431–445.

[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.

[M08] Marstaller, R. 2008. Moosgesellschaften am Südrand des Kyffhäusergebirges bei Bad Frankenhausen (Kyffhäuserkreis). 130. Beitrag zur Moosvegetation Thüringens. Mauritiana 20 (2): 289–348.

[M09] Marstaller, R. 2009. Die Moosgesellschaften des geplanten Naturschutzgebietes "Brandenburg und Göringer Stein" bei Göringen (Wartburgkreis, Eisenach). 136. Beitrag zur Moosvegetation Thüringens. Mauritiana 20 (3): 529–557.

[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.

[SG-C01] Sérgio, C., & I. Granzow-de la Cerda. 2001. On the identity of Desmatodon meridionalis Luisier. Journal of Bryology 23: 69–70.

[SG07] Singh, S. K., & J. P. Ghosh. 2007. Bryo-diversity in Indian Botanic Garden, Howrah, West Bengal. Bulletin of the Botanical Survey of India 49 (1–4): 155–164.

Smith, A. J. E., & R. Smith. 2004. The Moss Flora of Britain and Ireland, 2nd ed. Cambridge University Press.

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

Last updated: 18 December 2017.

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