Belongs within: Hookeriales.
The Hookeriaceae are a family of predominantly tropical mosses. Hookeriaceae are distinguished from other families of Hookeriales by the presence of a central strand in the stem. The circumscription of the Hookeriaceae, however, has varied between authors, with Daltonia and related genera potentially separated as the Daltoniaceae. Genera of the Hookeriaceae include Distichophyllum, characterised by dimorphic leaves with a single costa.
Characters (from Smith 2004): Stems with central strand. Pseudoparaphyllia filamentous or absent. Rhizoids unbranched. Leaves more or less complanate, often asymmetrical, often bordered; costa short and double or absent; cells large, lax, alar cells undifferentiated. Setae smooth or spinose; capsules inclined to pendulous; stomata usually superficially; lid conical; exostome teeth horizontally striate, endostome with high basal membrane, processes keeled, finely papillose, cilia sometimes present; calyptrae multistratose at middle, glabrous.
<==Hookeriaceae |--Orontobryum hookeriN02 |--Hepaticina Müll.Hal. 1902SK02 |--Adelothecium bogotenseJ87 |--Hemiragis aureaJ87 |--Bryobrothera Thér. 1920SK02 | `--B. crenulata (Broth. & Paris) Thér. 1920SK02 |--Eriopus Müll.Hal. 1847 non Treitschke 1825 (ICZN)SK02 | `--E. cristatus (Hedw.) Brid. 1801 [=Calyptrochaeta cristata]SK02 |--Mniadelphus Müll.Hal. 1848SK02 | |--M. flaccidusD03 | `--M. krauseiD03 |--Ephemeropsis Goebel 1892SK02 | |--E. tjibodensis Goebel 1892SK02 | `--E. trentepohlioides (Renner) Sainsbury 1951SK02 |--Achrophyllum Vitt & Crosby 1972SK02 | `--A. dentatum (Hooker & Wilson) Vitt & Crosby 1972 (see below for synonymy)SK02 | |--A. d. var. dentatumM49b | `--‘Pterygophyllum’ d. var. robustumM49b [=Hookeria robusta (nom. inv.)SK02] |--Pterygophyllum Brid. 1819SK02 | |--P. anomalumD03 | |--P. magellanicumD03 | |--P. obscurumD03 | `--P. quadrifariumM49b |--Hookeria Smith 1808 (nom. cons.)SK02 | |--H. acutifolia Hooker & Greville 1825SK02 | |--H. ancistroidesD03 | |--H. campbelliana [=Callicostella campbelliana]SK02 | |--H. jungermannioides [=Pterygophyllum jungermannioides Brid. 1819]SK02 | |--H. laete-virensD24 | `--H. lucens (Hedw.) Sm. 1808S04 [=Hypnum lucensD24, Pterygophyllum lucensS04] |--LepidopilumJ87 | |--L. amplireteJ87 | |--L. antillarumJ87 | |--L. muelleriJ87 | |--L. polytrichoides [incl. Campylotrichum acuminatum Sikora 1836]SK02 | |--L. robustumJ87 | |--L. scabrisetumVH02 | |--L. surinamenseVH02 | `--L. tortifoliumJ87 `--Distichophyllum Dozy & Molk. 1846SK02 |--D. assimile Broth. 1902 [=Mniadelphus assimilis (n. n.)]SK02 |--D. crispulum (Hooker & Wilson) Mitt. 1882 (see below for synonymy)SK02 |--D. cuspidatum (Dozy & Molk.) Dozy & Molk. 1846SK02 |--D. dicksoniD03 |--D. eremitaeD03 |--D. kraussei (Lorentz) Mitt. 1885SK02 |--D. longicuspis Broth. 1893SK02 |--D. meizhiiB-OO10 |--D. microcarpum (Hedw.) Mitt. 1882 (see below for synonymy)SK02 |--D. microphyllumM49a |--D. mittenii Bosch & Sande Lac. 1861SK02 |--D. molleD03 |--D. nigricansD03 |--D. patagonicumD03 |--D. pulchellum (Hampe) Mitt. 1882 (see below for synonymy)SK02 | |--D. p. var. pulchellumM49b | `--D. p. var. parvireteM49b |--D. rotundifolium (Hooker & Wilson) Müll.Hal. & Broth. 1900 (see below for synonymy)SK02 `--D. vitianumB57 Nomina nuda: Distichophyllum crispatissimum Dusén 1903D03 Distichophyllum leucoloma Whitel. 1893SK02 Eriopus odontoloma Dusén 1903D03 Pterygophyllum lamellatum Dusén 1903D03
Achrophyllum dentatum (Hooker & Wilson) Vitt & Crosby 1972 [=Pterygophyllum dentatum; incl. P. bryoides Broth. 1907, Hepaticina bryoides Müll.Hal. 1902, P. cyclophyllum, He. cyclophylla Müll.Hal. 1902, P. denticulatum (nom. illeg.), Hookeria denticulata (nom. illeg.), P. flaccidissimum Broth. 1907, Hepaticina flaccidissima Müll.Hal. 1902, Hookeria hepaticaefolia, Pterygophyllum hepaticaefolium, P. hookeri Jaeger 1877, Hepaticina interstitialis Müll.Hal. 1902, Hookeria nigella, Pterygophyllum nigellum, P. obscurum Mitt. 1869, Hookeria obscura (preoc.), Hepaticina pseudo-obscura (nom. inv.), Pterygophyllum trichoides Geh. ex Burges 1935 (n. n.), P. wattsii Broth. 1900, Achrophyllum wattsii (Broth.) Ramsay 1984 (comb. inv.)]SK02
Distichophyllum crispulum (Hooker & Wilson) Mitt. 1882 [=Hookeria crispula, Mniadelphus crispulus; incl. D. baileyanum Müll.Hal. 1902, Mniadelphus baileyi Müll.Hal. ex Kindb. 1891 (n. n.), D. minutifolium Müll.Hal. 1902, D. subflexuosum Broth. ex Burges 1935 (n. n.), Mniadelphus subflexuosus Broth. & Geh. 1897 (n. n.)]SK02
Distichophyllum microcarpum (Hedw.) Mitt. 1882 [=Hypnum microcarpon, Hookeria microcarpa, Mniadelphus microcarpus, Pterygophyllum microcarpum; incl. Hookeria complanata, Distichophyllum complanatum (Hampe) Mitt. 1882, Pterygophyllum complanatum, Hookeria distichophylla (nom. inv.), P. levieri, Distichophyllum levieri (Geh.) Broth. 1907, Hookeria subrotunda Hampe 1876, D. subrotundum (Hampe) Mitt. 1882, Mniadelphus subrotundus (nom. inv.), Pterygophyllum subrotundum (Hampe) Jaeger 1877]SK02
Distichophyllum pulchellum (Hampe) Mitt. 1882 [=Mniadelphus pulchellus, Hookeria pulchella (preoc.); incl. H. amblyophylla, Distichophyllum amblyophyllum, Mniadelphus amblyophyllus, Hookeria sinuosa, Distichophyllum sinuosum, Mniadelphus sinuosus, D. subsinuosum Fleischer 1922 (n. n.), M. subsinuosus Müll.Hal. 1922 (n. n.), D. whiteleggeanum Müll.Hal. 1902, M. whiteleggeanus (nom. inv.)]SK02
Distichophyllum rotundifolium (Hooker & Wilson) Müll.Hal. & Broth. 1900 [=Mniadelphus rotundifolius; incl. M. beccarii, D. beccarii (Müll.Hal. ex Hampe & Geh.) Paris 1895, D. fissidentoides, D. obliquomucronatum, D. squarrosulum, Mniadelphus subminutifolius, D. subminutifolium (Broth. & Geh.) Fleischer 1922]SK02
*Type species of generic name indicated
References
[B57] Bartram, E. B. 1957. Additional Fijian mosses, III. Journal of the Washington Academy of Sciences 46 (12): 392–396.
[B-OO10] Bednarek-Ochyra, H., & R. Ochyra. 2010. Bucklandiella shevockii (Bryophyta, Grimmiaceae), an exquisite new species from Yunnan, China. Polish Botanical Journal 55 (2): 499–506.
[D24] Dixon, H. N. 1924. The Student’s Handbook of British Mosses 3rd ed. V. V. Sumfield: Eastbourne.
[D03] Dusén, P. 1903. Patagonian and Fuegian mosses. In: Scott, W. B. (ed.) Reports of the Princeton University Expeditions to Patagonia, 1896–1899 vol. 8. Botany pp. 63–126. The University: Princeton (New Jersey).
[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.
[M49a] Martin, W. 1949a. The bryophytes of Stewart Island.—Part I. Transactions and Proceedings of the Royal Society of New Zealand 77 (2): 257–277.
[M49b] Martin, W. 1949b. Distribution of the mosses indigenous to New Zealand (supplement no. 1). Transactions and Proceedings of the Royal Society of New Zealand 77 (3): 355–360.
[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.
[S04] Smith, A. J. E. 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.
[VH02] Vanderpoorten, A., L. Hedenäs, C. J. Cox & A. J. Shaw. 2002. Phylogeny and morphological evolution of the Amblystegiaceae (Bryopsida). Molecular Phylogenetics and Evolution 23 (1): 1–21.