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Crosslandia setifolia is a partly monoecious species of Fimbristylis (Abildgaardieae: Cyperaceae)



While the limits of Fimbristylis Vahl (1805: 285) are contentious (Goetghebeur & Coudijzer 1984, Gordon-Gray 1971, Lye 1971, 1973), particularly with regard to the inclusion of Abildgaardia Vahl (1805: 296) within Fimbristylis, all current data support the derivation of Crosslandia W.Fitzg. (1906: 9) from within Fimbristylis (Ghamkhar et al. 2007; Hinchliff & Roalson 2013, Reutemann et al. 2018, Semmouri et al. 2018, Roalson et al. 2019). Crosslandia was described as a monotypic genus in 1906 by Fitzgerald, with more details provided in 1918, where he distinguished Crosslandia from Fimbristylis in having monoecious spikelets and “…the position and structure of the female spikelets.” This is clearly a specialized, derived condition from the typically hermaphroditic flowers in monomorphic spikes of Fimbristylis, and it is not, in itself, particularly surprising that monoecy has been derived within Fimbristylis. This has been found in other Cyperaceae genera, including Eleocharis Brown (1810: 224) where there are multiple species with dimorphic inflorescences with monoecious spikes derived from the more typical hermaphroditic flowers in monomorphic spikes (Roalson et al. 2010). In addition, Clarke (2005) found that monoeicy is not always present in specimens referred to Crosslandia setifolia. For these reasons, we provide a new name in Fimbristylis to replace Crosslandia setifolia W.Fitzg. (1906: 9).


Taxonomy, Nomenclature, Cyperaceae, Monocots

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Boeckeler, O. (1886) Neue Cyperaceen von Argentinien, Mexiko, Alaska und dem Kilimandscharo. Botanische Jahrbücher für Systematik 7 (3): 273–280.

Clarke, K.L. (2005) Systematic studies in Abildgaardieae (Cyperaceae). Ph.D. thesis, University of New England, Armidale, Australia. 270 pp.

Durand, T.A. & Schinz, H. (1894) Conspectus Florae Africae, Vol. 5. Bruxelles: Jardin Botanique de L’Etat. pp. 1–977.

Fitzgerald, W.V. (1906) Some species of West Kimberley plants. Further botanical references. The Western Mail 21 (1068), 16 June, Perth. pp. 9, 24–25, 28.

Fitzgerald, W.V. (1918) The botany of the Kimberleys, north-west Australia. Journal and Proceedings of the Royal Society of Western Australia 3: 102–224.

Ghamkhar, K., Marchant, A.D., Wilson, K.L. & Bruhl, J.J. (2007) Phylogeny of Abildgaardieae (Cyperaceae) inferred from ITS and trnL-F data. Aliso 23: 149–164.

Goetghebeur, P. & Coudijzer, J. (1984) Studies in Cyperaceae 3. Fimbristylis and Abildgaardia in Central Africa. Bulletin du Jardin Botanique National de Belgique 54: 65–89.

Gordon-Gray, K.D. (1971) Fimbristylis and Bulbostylis: Generic limits as seen by a student of southern African species. Mitteilungen der Botanischen Staatssammlung München (Munich) 10: 549–574.

Hinchliff, C.E. & Roalson, E.H. (2013) Using supermatrices for phylogenetic inquiry: an example using the sedges. Systematic Biology 62: 205–219.

Kenneally, K.F., Edinger, D.J. & Willing, T. (1996) Broome and beyond. Plants and people of the Dampier Peninsula, Kimberley, Western Australia. Department of Conservation and Land Management, Perth.

Linnaeus, C. (1753) Species Plantarum. Salvius, Stockholm.

Lye, K.A. (1971) The generic concept of Bulbostylis Kunth ex C.B.Clarke. Mitteilungen der Botanischen Staatssammlung München (Munich) 10: 539–547.

Lye, K.A. (1973) Studies in African Cyperaceae: 8. The taxonomic position of Abildgaardia Vahl and Nemum Hamilton. Botaniska Notiser 126: 325–329.

Maslin, B.R. & Cowan, R.S. (1998) William Vincent Fitzgerald’s species of Acacia (Leguminosae: Mimosoideae): typification of the names. Nuytsia 9: 387–398.

Reutemann, A.G., Ardissone, R.E., López, M.G., Muchut, S.E., Boldrini, I., Vegetti, A.C. & Giussani, L.M. (2018) Phylogenetic relationships in Bulbostylis complex (Abildgaardieae: Cyperaceae) inferred from nuclear and plastid DNA sequence data. Systematics and Biodiversity 16: 441–452.

Richard, A. (1850) Tentamen Florae Abyssinicae. Vol. 2. Paris: Bertrand, pp. 1–518.

Roalson, E.H., Prata, A.P., Mesterházy, A., Chase, M.C., Simpson, D.A., Thomas, W.W. & Larridon, I. (2019) A broader circumscription of Bulbostylis including Nemum (Abildgaardieae: Cyperaceae). Phytotaxa 395: 199–208

Rye, B.L. (1992) Cyperaceae. In: Wheeler, J.R. (Ed.) Flora of the Kimberley Region. Conservation and Land Management, Perth, WA, pp. 1035–1107.

Semmouri, I., Bauters, K., Léveillé-Bourret, É., Starr, J.R., Goetghebeur, P. & Larridon, I. (2018) Phylogeny and systematics of Cyperaceae, the evolution and importance of embryo morphology. The Botanical Review.

Vahl, M. (1805) Enumeratio plantarum, vel ab alium vel ab ipso observatum, cum earum differentiis specificis, synonymis selectis et descriptionibus succinctis. Vol. 2. Impensis auctoris, & prostat apud J.H. Schubothe, Havniae.


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