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Lemnaceae and Orontiaceae Are Phylogenetically and Morphologically Distinct from Araceae
Tippery, Nicholas P. Les, Donald H. Appenroth, Klaus J. Sree, K. Sowjanya Crawford, Daniel J. Bog, Manuela
Tippery, Nicholas P.
Les, Donald H.
Appenroth, Klaus J.
Sree, K. Sowjanya
Crawford, Daniel J.
Bog, Manuela
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Abstract
Duckweeds comprise a distinctive clade of pleustophytic monocots that traditionally has been classified as the family Lemnaceae. However, molecular evidence has called into question their phylogenetic independence, with some authors asserting instead that duckweeds should be reclassified as subfamily Lemnoideae of an expanded family Araceae. Although a close phylogenetic relationship of duckweeds with traditional Araceae has been supported by multiple studies, the taxonomic disposition of duckweeds must be evaluated more critically to promote nomenclatural stability and utility. Subsuming duckweeds as a morphologically incongruent lineage of Araceae effectively eliminates the family category of Lemnaceae that has been widely used for many years. Instead, we suggest that Araceae subfamily Orontioideae should be restored to family status as Orontiaceae, which thereby would enable the recognition of three morphologically and phylogenetically distinct lineages: Araceae, Lemnaceae, and Orontiaceae.
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Date
2021-11-30
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MDPI
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Tippery_2021.pdf
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Aquatic plants, Araceae, Duckweeds, Lemnoideae, Molecular phylogenetics, Taxonomy
Citation
Tippery, N.P.; Les, D.H.; Appenroth, K.J.; Sree, K.S.; Crawford, D.J.; Bog, M. Lemnaceae and Orontiaceae Are Phylogenetically and Morphologically Distinct from Araceae. Plants 2021, 10, 2639. https://doi.org/10.3390/plants10122639