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Dicroidium
Taxonomy
Dicroidium was named by Gothan (1912). It is not extant. Its type is Xylopteris elongata.
It was assigned to Pteridospermophyta by Andrews (1970); to Umkomasiaceae by Meyen (1984); and to Corystospermaceae by Jain and Delevoryas (1967), Lakhanpal et al. (1976), Holmes (1982), Chandra and Tewari (1991), Cantrill et al. (1995), Moisan et al. (2010) and Chatterjee et al. (2013).
It was assigned to Pteridospermophyta by Andrews (1970); to Umkomasiaceae by Meyen (1984); and to Corystospermaceae by Jain and Delevoryas (1967), Lakhanpal et al. (1976), Holmes (1982), Chandra and Tewari (1991), Cantrill et al. (1995), Moisan et al. (2010) and Chatterjee et al. (2013).
Species
D. coriaceum, D. crassinervis, D. dubium (syn. Sphenopteris bergina), D. elongatum, D. eskense, D. feistmantelii, D. fremouwensis, D. giarensis, D. gopadensis, D. irnensis, D. jordanensis, D. natalense, D. nidpurensis, D. odontopteroides (syn. Thinnfeldia subtrigona), D. papillosum, D. prolungatum, D. robustum, D. sahnii, D. shirleyi, D. spinifolium, D. stelznerianum, D. superbum, D. voiseyi, D. zuberi
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1912 | Dicroidium Gothan |
| 1967 | Dicroidium Jain and Delevoryas |
| 1970 | Dicroidium Andrews |
| 1976 | Dicroidium Lakhanpal et al. |
| 1982 | Dicroidium Holmes |
| 1984 | Dicroidium Meyen p. 89 |
| 1991 | Dicroidium Chandra and Tewari |
| 1995 | Dicroidium Cantrill et al. |
| 2010 | Dicroidium Moisan et al. |
| 2013 | Dicroidium Chatterjee et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Dicroidium Gothan 1912
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†Dicroidium coriaceum Johnston 1886
†Dicroidium crassinervis Geinitz 1876
†Dicroidium dubium Feistmantel 1878
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Invalid names: Sphenopteris bergina Jones and de Jersey 1947 [synonym]
†Dicroidium elongatum Carruthers 1872
†Dicroidium eskense Walkom 1928
†Dicroidium feistmantelii Johnston 1847
†Dicroidium fremouwensis Pigg 1990
†Dicroidium giarensis Pal 1984
†Dicroidium gopadensis Bose and Srivastava 1971
†Dicroidium irnensis Abu Hamad et al. 2008
†Dicroidium jordanensis Abu Hamad et al. 2008
†Dicroidium natalense Frenguelli 1943
†Dicroidium nidpurensis Bose and Srivastava 1971
†Dicroidium odontopteroides Morris 1845
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Invalid names: Thinnfeldia subtrigona Feistmantel 1879 [synonym]
†Dicroidium papillosum Bose and Srivastava 1971
†Dicroidium prolungatum Menéndez 1951
†Dicroidium robustum Abu Hamad et al. 2008
†Dicroidium sahnii Seward 1932
†Dicroidium shirleyi Holmes 1982
†Dicroidium spinifolium Tenison-Woods 1883
†Dicroidium stelznerianum Geinitz 1876
†Dicroidium superbum Shirley 1898
†Dicroidium voiseyi Holmes and Ash 1979
†Dicroidium zuberi Szajnocha 1888
Diagnosis
No diagnoses are available