ORCID Profile
0000-0003-1655-3681
Current Organisation
Washington State University
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Publisher: Wiley
Date: 25-06-2021
DOI: 10.1111/JSE.12757
Abstract: Cyperaceae (sedges) are the third largest monocot family and are of considerable economic and ecological importance. Sedges represent an ideal model family to study evolutionary biology due to their species richness, global distribution, large discrepancies in lineage ersity, broad range of ecological preferences, and adaptations including multiple origins of C 4 photosynthesis and holocentric chromosomes. Goetghebeur′s seminal work on Cyperaceae published in 1998 provided the most recent complete classification at tribal and generic level, based on a morphological study of Cyperaceae inflorescence, spikelet, flower, and embryo characters, plus anatomical and other information. Since then, several family‐level molecular phylogenetic studies using Sanger sequence data have been published. Here, more than 20 years after the last comprehensive classification of the family, we present the first family‐wide phylogenomic study of Cyperaceae based on targeted sequencing using the Angiosperms353 probe kit s ling 311 accessions. In addition, 62 accessions available from GenBank were mined for overlapping reads and included in the phylogenomic analyses. Informed by this backbone phylogeny, a new classification for the family at the tribal, subtribal, and generic levels is proposed. The majority of previously recognized suprageneric groups are supported, and for the first time, we establish support for tribe Cryptangieae as a clade including the genus Koyamaea . We provide a taxonomic treatment including identification keys and diagnoses for the 2 subfamilies, 24 tribes, and 10 subtribes, and basic information on the 95 genera. The classification includes five new subtribes in tribe Schoeneae: Anthelepidinae, Caustiinae, Gymnoschoeninae, Lepidospermatinae, and Oreobolinae.
Publisher: Oxford University Press (OUP)
Date: 12-10-2023
Publisher: Magnolia Press
Date: 26-03-2019
DOI: 10.11646/PHYTOTAXA.399.2.6
Abstract: 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).
Publisher: American Society of Plant Taxonomists
Date: 27-12-2017
No related grants have been discovered for Eric Roalson.