Phytogeographic History and Phylogeny of the Humiriaceae

Abstract

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A liana from the lower Miocene of Panama and the fossil record of Connaraceae

“…Early work yielded evidence of fern‐ and palm‐dominated wetlands (Berry, 1918; Graham, 1988). More recent discoveries have provided evidence of moist lowland to premontane tropical forests with plants of primarily South American affinities (Herrera et al, 2010, 2014; Jaramillo et al, 2014; Rodríguez‐Reyes et al, 2014, 2017; Jud et al, 2016; Nelson and Jud, 2017). Only two of the five Rourea sections occur in the Neotropics today: the monotypic section Bernardinia and the species‐rich section Rourea (Jongkind and Lemmens, 1989).…”

“…The Cucaracha Formation lies above the shallow marine Culebra Formation and below the basalt flows of the middle Miocene Pedro Miguel Formation (Woodring, 1964; Kirby et al, 2008). The fossiliferous horizon, described in greater detail elsewhere (Herrera et al, 2010; Jud et al, 2016), belongs to the lower part of the Cucaracha Formation and is reliably dated to ∼19 mya (Herrera et al, 2014; MacFadden et al, 2014). We cut the fossil stem in transverse and longitudinal orientations using a Microslice 2 annular saw (ULTRA TEC Mfg, Santa Ana, California, USA) and prepared serial transverse (XS), radial (RLS), and tangential (TLS) sections using the cellulose acetate peel technique (Joy et al, 1956).…”

Vantanea maculicarpa (Humiriaceae): a new tree species from French Guiana

“…A comprehensive bibliographic survey of publications describing Vantanea species (Cuatrecasas 1961;Rodrigues 1982;Sabatier 1987;McPherson 1988;Gentry 1990;Sabatier 2002;Herrera et al 2010) was carried out. Digitized herbarium sheets of all Vantanea species were downloaded from various database portals, including the New York Botanical Garden (http://sweetgum.nybg.org/science/vh/), the Muséum national d'Histoire naturelle (https://science.mnhn.fr/institution/mnhn/collection/p/item/search/form?lang=en_US), the Smithsonian National Museum of Natural History (http://collections.nmnh.si.edu/search/botany/) and the Kew Royal Botanic Gardens (http://apps.kew.org/herbcat/gotoSearchPage.do).…”

Integrated Chronology, Flora and Faunas, and Paleoecology of the Alajuela Formation, Late Miocene of Panama

“…Autochthonous and parautochthonous assemblages of fossil wood preserved as charcoal and calcium-carbonate permineralizations from the Cucaracha Formation have lower species richness and higher evenness than the Alajuela Formation assemblage; but the same families are present in both units [30, 31, 34, 35], as well as older Miocene palynofloras [36–39]. The similarity of forest composition leaves open the possibility that the woods were reworked from lower Miocene deposits.…”