Resolving basal lamiid phylogeny and the circumscription of Icacinaceae with a plastome‐scale data set

Stull, Gregory W.; Stéfano, Rodrigo Duno de; Soltis, Douglas E.; Soltis, Pamela S.

doi:10.3732/ajb.1500298

Cited by 102 publications

(162 citation statements)

References 92 publications

(219 reference statements)

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“…However, Boraginales have been variously resolved as sister to Lamiales (Soltis & al., 2011;Refulio-Rodríguez & Olmstead, 2014), Solanales (Weigend & al., 2014), Gentianales (Stull & al., 2015), or Solanales + Gentianales (Moore & al., 2010), always with low to moderate support only.…”

Section: Introductionmentioning

confidence: 99%

“…In the face of this evidence, the most important historical argument for maintaining traditional Boraginaceae and Hydrophyllaceae as separate entities, or even as a single broadly circumscribed family (Boraginaceae s.l. ), is eliminated and an updated classification appears even more justified.Based on phylogenetic data (Refulio-Rodríguez & Olmstead, 2014;Weigend & al., 2014;Stull & al., 2015), the two major clades of the Boraginaceae s.l.[Boraginales] consist of: (1) Codonaceae + Wellstediaceae + Boraginaceae s.str. ; and (2) Hydrophyllaceae + Namaceae + Heliotropiaceae + Lenno aceae +Ehretiaceae + Coldenia + Hoplestigmataceae + Cordiaceae (Fig.…”

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confidence: 99%

“…Based on phylogenetic data (Refulio-Rodríguez & Olmstead, 2014;Weigend & al., 2014;Stull & al., 2015), the two major clades of the Boraginaceae s.l.…”

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Familial classification of the Boraginales

Luebert

Cecchi

Frohlich

et al. 2016

TAXON

112

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The Boraginales are now universally accepted as monophyletic and firmly placed in Lamiidae. However, a consensus about familial classification has remained elusive, with some advocating recognition of a single, widely variable family, and others proposing recognition of several distinct families. A consensus classification is proposed here, based on recent molecular phylogenetic studies, morphological characters, and taking nomenclatural stability into consideration. We suggest the recognition of eleven, morphologically well-defined and clearly monophyletic families, namely the Boraginaceae s.str., Codonaceae, Coldeniaceae fam. nov., Cordiaceae, Ehretiaceae, Heliotropiaceae, Hoplestigmataceae, Hydrophyllaceae, Lennoaceae, Namaceae, and Wellstediaceae. Descriptions, synonomy, a taxonomic key, and a list of genera for these eleven families are provided, including the new family Coldeniaceae (monogeneric) and Namaceae (segregated from Hydrophyllaceae and comprising Nama, Eriodictyon, Turricula, and Wigandia), the latter necessitating a revised circumscription of a more morphologically coherent Hydrophyllaceae. Keywords angiosperms; Boraginaceae; Boraginales; classification; family; plant taxonomy Boraginales Working Group • Families of Boraginales 503Version of Record TAXON 65 (3) • June 2016: 502-522 Boraginaceae in this traditional sense (Candolle, 1845; Bentham & Hooker, 1876;Gürke, 1893;Engler, 1898;Pilger & Krause, 1915) were subdivided into five subfamilies, namely Boraginoideae, Cordioideae, Ehretioideae, Heliotropioideae and Wellstedioideae. In pre-molecular times most scientists accepted this circumscription of Boraginaceae (e.g., Chadefaud & Emberger, 1960;Melchior, 1964b;Takhtajan, 1980Takhtajan, , 1997 Cronquist, 1981 Cronquist, , 1988Thorne, 1992), although some authors recognized one or the other subfamily at the family level. For example, Svensson (1925) andDi Fulvio (1978) removed Cordioideae, Heliotropioideae and Ehretioideae to Heliotropi aceae based on embryological studies, while Merxmüller (1960), Dahlgren (1980), and Takhtajan (1987) treated Wellstedioideae at the family level as Wellstediaceae. Conversely, Hoplestigmataceae, Hydrophyllaceae, and Lennoaceae were generally accepted as distinct families. However, the close relationships of these taxa to traditional Boraginaceae has been widely acknowledged by several authors (e.g., Jussieu, 1789; Baillon, 1891;Peter, 1893;Svensson, 1925; Chadefaud & Emberger, 1960; Melchior, 1964a, c;Takhtajan, 1980; Cronquist, 1981 Cronquist, , 1988. For example, Baillon (1891) defined the Boraginaceae as comprising nine series, which included both Boraginaceae and Hydrophyllaceae in their traditional circumscriptions. Chadefaud & Emberger (1960) considered Boraginaceae, Hoplestigmataceae, Hydrophyllaceae, and Lennoaceae to form a natural group within the order Tubiflorales. Takhtajan (1980) included these same families in the suborder Boraginineae.On the other hand, three groups historically associated to Boraginaceae have been clearly sho...

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confidence: 99%

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Familial classification of the Boraginales

Luebert

Cecchi

Frohlich

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“…One of the most diverse and abundant families in the London Clay flora, the Icacinaceae are represented by at least seven genera and 27 species, according to the original works of Reid and Chandler (1933) and Chandler (1961Chandler ( , 1964Chandler ( , 1978. The family, in the traditional sense (Engler 1893;Howard 1940;Sleumer 1942), was grossly polyphyletic (Soltis et al 2000;Kårehed 2001), but recent phylogenetic work has greatly clarified the composition of the family and relationships within it (Byng et al 2014;Stull et al 2015). Furthermore, recent and ongoing studies of fruit morphology have highlighted characters useful for diagnosing clades within the family (e.g., Stull et al 2011Allen et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Revision of Icacinaceae from the Early Eocene London Clay flora based on X-ray micro-CT

Stull

Adams

Manchester

et al. 2016

Botany

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Abstract:The Early Eocene (Ypresian) London Clay Formation contains one of the most important fruit and seed assemblages from the Paleogene, including a large diversity of taxa (>350 spp.) preserved as pyrite permineralizations retaining 3D structure as well as anatomical detail. Despite the importance of the flora for understanding angiosperm biogeographic and evolutionary history, the majority of the fossil material has not been revisited since the original taxonomic treatments by E.M. Reid and M.E.J. Chandler. Given subsequent advances in our understanding of angiosperm phylogeny and fruit morphology, coupled with technological advances in imaging/visualizing fossil material, many of the taxa represented in the flora deserve further study. Here we present a revision of the pantropical family Icacinaceae using X-ray micro-computed tomography (micro-CT) images of 21 species from the flora. Based on the results, four new combinations are made, a new fossil-genus is established for a distinctive species with affinities to the Phytocreneae, and emended diagnoses are provided for eight taxa. Of the seven genera recognized from the flora, only one, Iodes Blume, is extant. This study offers important insights on the biogeographic and evolutionary history of Icacinaceae, which is one of the most abundant and diverse components of the flora from the London Clay Formation.Key words: endocarps, Eocene, Icacinaceae, Iodes, London Clay, X-ray tomography.Résumé : La formation d'argile de Londres (London Clay Formation) de l'Éocène précoce (Yprésien) comprend un des assemblages de fruits et de graines du Paléogène le plus important, comprenant une grande diversité de taxons (>350 spp.) préservés sous forme de minéralisations de pyrite qui conservent la structure en 3D de même que le détail anatomique. Malgré l'importance de la flore pour comprendre l'histoire biogéographique et évolutive des angiospermes, la majorité du matériel fossile n'a pas été revisité depuis les descriptions taxonomiques originales de E.M. Reid et M.E.J. Chandler. Compte tenu des progrès subséquents quant à notre compréhension de la phylogénie des angiospermes et de la morphologie des fruits, couplés aux progrès technologiques en imagerie/ visualisation du matériel fossile, plusieurs taxons représentés dans la flore méritent d'être étudiés davantage. Les auteurs présentent ici une révision de la famille pantropicale des Icacinaceae à l'aide d'images en microtomographie aux rayons-X assistée par ordinateur (micro-CT) de 21 espèces de la flore. Selon les résultats, quatre nouvelles combinaisons sont faites, un nouveau genre fossile est établi pour une espèce distinctive ayant des affinités avec les Phytocreneae, et des diagnostics amendés sont fournis pour huit taxons. Des sept genres reconnus de la flore, un seul, Iodes Blume existe toujours. Cette étude offre un important aperçu de l'histoire biogéographique et évolutive des Icacinaceae, qui constituent une des composantes les plus abondantes et diverses de la flore de la formation de l'argile de Londr...

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“…Na atual circunscrição, Metteniusaceae possui folhas espiraladas, com margens inteiras, inflorescência cimosa-tirsiforme com pedicelo articulado, cálice curto, quincuncial, corola com deiscência valvar com face adaxial quilhada e tricomas ao longo da quilha, gineceu 3-5 carpelar, estiletes muito curtos a longos e estigmas pontuados (Stevens 2001). Metteniusaceae compreende atualmente 11 gêneros (Stull et al 2015) e 55 espécies de distribuição pantropical (Stevens 2001). …”

unclassified

Flora das cangas da Serra dos Carajás, Pará, Brasil: Metteniusaceae

Cruz

Viana

2016

Rodriguésia

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ResumoÉ apresentado um estudo taxonômico de Metteniusaceae das cangas da Serra dos Carajás, no estado do Pará, Brasil. Uma espécie foi encontrada: Emmotum nitens, distribuída exclusivamente na América do Sul, com registros para o Brasil e Bolívia. São apresentadas uma descrição detalhada, ilustrações, fotografias, comentários sobre morfologia, distribuição e fenologia da espécie. Palavras-chave: Emmotum, FLONA Carajás, flora. et al. 2015). Na atual circunscrição, Metteniusaceae possui folhas espiraladas, com margens inteiras, inflorescência cimosa-tirsiforme com pedicelo articulado, cálice curto, quincuncial, corola com deiscência valvar com face adaxial quilhada e tricomas ao longo da quilha, gineceu 3-5 carpelar, estiletes muito curtos a longos e estigmas pontuados (Stevens 2001). Metteniusaceae compreende atualmente 11 gêneros (Stull et al. 2015) e 55 espécies de distribuição pantropical (Stevens 2001). Abstract Emmotum Desv. ex Ham.Emmotum possui 14 espécies reconhecidas de distribuição neotropical, com registros para a Colômbia, Venezuela, Guiana, Suriname, Guiana Francesa, Peru, Brasil e Bolívia (Duno de Stefano et al. 2007). São árvores ou arbustos, com ramos pubescentes, folhas alternas, pecioladas, sem estípulas, simples, inteiras, coriáceas; inflorescência axilar, fasciculada e paniculada (Duno de Stefano et al. 2007;Duno de Stefano & Fernández-Concha 2011). No Brasil são registradas nove espécies, das quais sete ocorrem na Amazônia brasileira. Emmotum nitens (Benth.) Miers, a única espécie registrada nas áreas de canga da Serra dos Carajás, possui ampla distribuição no Brasil. Figs. 1a-g; 2a-b Árvore, 3-4 m alt. Ramos cilíndricos, pubescentes. Folhas simples, alternas, espiraladas, glabras na face adaxial e velutinas na face abaxial, fortemente discolores, nervação eucamptódroma; pecíolo 0,7-1,5 cm compr.; estípulas ausentes; lâminas 3,2-15 × 2-5,1 cm, elípticas, ovais a obovais. Flores monoclinas, diclamídeas, pedicelo 0,1-0,2 cm compr.; cálice gamossépalo; corola 0,3-0,4 cm compr., pétalas 5, cremes, carnosas, faces externas pubescentes, faces internas percorridas por uma saliência na região mediana, presença de tricomas no ápice e nas bases da saliência; estames 5, 0,3-0,4 cm compr., livres entre si, anteras rimosas; ovário 0,1-0,15 cm compr., lóculos 3; estilete ca. 0,1 cm

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Resolving basal lamiid phylogeny and the circumscription of Icacinaceae with a plastome‐scale data set

Cited by 102 publications

References 92 publications

Familial classification of the Boraginales

Familial classification of the Boraginales

Revision of Icacinaceae from the Early Eocene London Clay flora based on X-ray micro-CT

Flora das cangas da Serra dos Carajás, Pará, Brasil: Metteniusaceae

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