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Mar 29, 2019

The origin of Humboldt and Bonpland’s holotype of Oncidium ornithorhynchum Kunth, clarified using ov

by Santiago Madriñán, Natalia Contreras-Ortiz, Teresa Rodríguez-García, Sonia Quintanilla, Jaime Bernal-Villegas, Alberto Gómez-Gutiérrez Oncidium ornithorhynchum, an epiphytic orchid characterized by erect, pyramidal inflorescences and small yellow flowers, is found in the northern Andes. However, according to the protologue, the type was collected in Mexico during Humboldt and Bonpland’s American expedition (1800–1804). To clarify this problem, we extracted DNA from the anc

Mar 7, 2019

Phylogenetic Relationships of Neotropical Lady Ferns (Athyriaceae), with a Description of Ephemeropt

by Robbin Moran, Judith Garrison Hanks, Michael Sundue The lady ferns (Athyrium s.l.) are primarily distributed in the Old World, but include some New World representatives including Anisocampium, Pseudathyrium, and Athyrium s.s. Most of the New World species and especially those in the Neotropics, have not been subject to phylogenetic investigation. Therefore, we carried out a molecular phylogenetic analysis of Neotropical lady ferns (based on five plastid markers) to invest

Mar 7, 2019

Generic classification of Amaryllidaceae tribe Hippeastreae

by Nicolas Garcia, Alan W. Meerow, Silvia Arroyo-Leuenberger, Renata S. Oliveira, Julie H. Dutilh, Pamela S. Soltis, Walter S. Judd A robust generic classification for Amaryllidaceae has remained elusive mainly due to the lack of unequivocal diagnostic characters, a consequence of highly canalized variation and a deeply reticulated evolutionary history. A consensus classification is proposed here, based on recent molecular phylogenetic studies, morphological and cytogenetic v

Mar 7, 2019

Island biogeography of Macaronesian Gesnouinia and Mediterranean Soleirolia (Parietarieae, Urticacea

by Christina Schüßler, Christian Bräuchler, Jorge Alfredo Reyes-Betancort, Marcus Koch, Mike Thiv Urticaceae tribe Parietarieae serves as an excellent example to study hypotheses on Macaronesian-Mediterranean island biogeography. Parietarieae is distributed in both of these floristically closely related regions and contains two island endemic genera. Gesnouinia is endemic to Macaronesia and was considered as a tertiary relict from a European paleotropical vegetation. This, ho

Mar 7, 2019

RAD Sequencing Rejects a Long-Distance Disjunction in Stellaria (Caryophyllaceae) and Yields Support

by Mathew Sharples, Erin Tripp Whereas the eastern North American–eastern Asian floristic connection represents one of the most widely studied biogeographical relationships in flowering plant evolution, connections between western North America and Asia have been comparatively rarely investigated, especially through genetic approaches. Stellaria irrigua Bunge is one of several plants that has been treated as an exceptionally dramatic example of a disjunction between floristic

Mar 7, 2019

The valid publication of Abroma (Malvaceae)

by Shuai Liao, Qin-Wen Lin, Jin-Shuang Ma, John H. Wiersema “Abroma” Jacq. and “Ambroma” L. f. have been alternatively adopted in different publications for the same genus of Malvaceae. The correct spelling and ascription of this generic name remain in dispute. Fosberg reviewed the nomenclature of this genus and concluded that Jacquin did not validly publish Abroma in 1776 because he failed to provide a separate generic description or diagnosis, and because validation with a

Mar 7, 2019

Wandering among Dehnhardt's gums: the cold case of Eucalyptus camaldulensis (Myrtaceae) and othe

by Emanuele Del Guacchio, Anthony Russell Bean, Giancarlo Sibilio, Adriana De Luca, Olga De Castro, Paolo Caputo In this contribution, we treat all the names in the genus Eucalyptus published by F. Dehnhardt, including the much-discussed E. camaldulensis. Current opinion would suggest that Dehnhardt applied this name to a plant different from that to which the name has commonly been applied. Hence, E. camaldulensis was conserved with a conserved neotype. Despite this, we show

Mar 7, 2019

Species delimitation in the genus Greenwayodendron based on morphological and genetic markers reveal

by Brandet-Junior Lissambou, Thomas L.P. Couvreur, Christiane Atteke, Tariq Stévart, Rosalia Piñeiro, Gilles Dauby, Franck K. Monthe, Davy U. Ikabanga, Bonaventure Sonké, Bertrand M’batchi, Olivier J. Hardy Combining genetic and morphological markers is a powerful approach for species delimitation, much needed in tropical species complexes. Greenwayodendron (Annonaceae) is a widespread genus of tree species distributed from West to East African rainforests. Two species and fo

Mar 7, 2019

Molecular phylogeny of the large South American genus Eriosyce (Notocacteae, Cactaceae): generic del

by Pablo C. Guerrero, Helmut E. Walter, Mary T. K. Arroyo, Carol M. Peña, Italo Tamburrino, Marta De Benidictis, Isabel Larridon Eriosyce is one of most species-rich genera within Notocacteae (Cactaceae) harboring a variety of stem and flower morphologies, and fruits with basal abscission. The lack of a well-sampled molecular phylogeny contributes to the current taxonomic instability of the genus, where its circumscription and infrageneric classification has been questioned.

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