A New Species of Leucheria (Asteraceae, Mutisieae) from Chile

Katinas, Liliana; Tellerı́a, Marı́a Cristina; Crisci, Jorge V.

doi:10.3417/2006108

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…This study is based on herbarium material of the 49 species of Leucheria (Crisci, 1976;Katinas & al., 2008bKatinas & al., , 2018. A list of the specimens studied is provided in Appendix 1.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Capitulum compartmentalization in Leucheria (Nassauvieae): Insights into the evolution of Asteraceae inflorescence

Katinas

Forte

2020

TAXON

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An unusual feature occurs in the capitula of Leucheria (Nassauvieae, Asteraceae), some phyllaries of the involucre are twisted and/or rotated. The different spatial orientations of these phyllaries, called here paleaceous phyllaries, divide the capitulum into compartments enclosing florets and fruits. Because the internal morphology of the phyllaries could play a role in the compartmentalization, the anatomy of the phyllaries together with their different spatial arrangements was analyzed in the 49 species of Leucheria. We found differences between the abaxial and adaxial epidermis, bulliform-like cells in the epidermis, and a callus at the base of the phyllaries. Cohesion, swelling, and turgor mechanisms in tissues are proposed to play a role in the positional changes of the phyllaries. The phyllaries bend, twist, rotate, and spread down and, excepting the latter, all are involved in capitula compartmentalization. The paleaceous phyllaries are already present in buds and continue during the whole plant life. Our results support previous phylogenetic hypotheses that suggest that Leucheria achieved a regular capitulum but maintained the remnants of an ancestor's pseudocephalium.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Capitulum compartmentalization in Leucheria (Nassauvieae): Insights into the evolution of Asteraceae inflorescence

Katinas

Forte

2020

TAXON

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“…integrifolia (Phil.) Grau & Zinnecker and Leucheria viscida (Bertero ex Colla) Grau & Zinnecker (Grau 1987); the new species from Chile, L. graui Katinas, M. C. Tellería, & Crisci (Katinas et al 2008c), L. meladensis Katinas, Crisci, & A. E. Martic. (Katinas et al 2018), and L. cantillanensis Lavandero (Lavandero et al 2020); the new variety L. diemii var.…”

Section: Introductionmentioning

confidence: 99%

A Synopsis of Leucheria (Asteraceae, Nassauvieae), with Notes on the Morphology

Katinas

Apodaca²,

Crisci

2022

Smithsonian Contributions to Botany

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A synopsis of Leucheria Lag. (Asteraceae, Nassauvieae) is presented that adds morphological information about the species and encompasses the taxonomic novelties of the genus (new combinations, new varieties, and new species) established after the last revisionary work in 1976. Because previous work showed that the position of the phyllaries of the involucre, interpreted as paleae, and the life cycle are not good taxonomic characters, a new approach is proposed here for the species distinction. The morphological analysis shows that all but one species (L. floribunda) have plumose pappi with cilia of different lengths, and the surface of the fruits is tuberculate in all species. The type and amount of fruit pubescence are useful in the distinction of some species. As a result of the analysis, the number of species of Leucheria was reduced from 49 to 29. Twenty-seven new lectotypifications (Chabraea barrasiana J. Rémy, Chabraea gayana J. Rémy, Chabraea multifida DC., Chabraea salina J. Rémy, Chabraea salinasi Phil. var. bipinnatifida Phil., Chabraea suaveolens (d’Urv.) DC. var. integrifolia Sch. Bip., Chabraea suaveolens (d’Urv.) DC. var. pinnatifida Sch. Bip., Chabraea viscida Bertero ex Colla, Lasiorrhiza lithospermifolia Poepp. ex Less., Leuceria conyzoides D. Don, Leuceria echioides D. Don, Leuceria fuegina Phil., Leuceria garciana J. Rémy, Leuceria gracilis Albov, Leuceria hieracioides D. Don, Leuceria ibari Phil. var. glandulosa Speg., Leuceria ibari Phil. var. sessiliflora Speg., Leuceria lanata Albov fo. virescens Albov, Leuceria lanata Albov, Leucheria candidissima D. Don, Leucheria coerulescens J. Rémy, Leucheria congesta D. Don, Leucheria floribunda DC., Leucheria rosea Poepp. ex Less., Leucheria runcinata D. Don, Leucheria scrobiculata D. Don, Perdicium suaveolens d’Urv.), five neotypes (Leuceria acanthoides D. Don, Leuceria cinerea D. Don, Leuceria laciniata Hook. & Arn., Leucheria ibari Phil. var. glabrata Speg., Leucheria millefolium Dusén & Skottsb.), seven epitypes (Leuceria divaricata D. Don, Leuceria hoffmannii Dusén, Leuceria lanigera O. Hoffm. ex Dusén, Leuceria meyeniana Walp., Leuceria pulchella D. Don, Leucheria glandulosa D. Don, Trixis senecioides Hook.), 36 new synonyms, and some changes in the species distributions are proposed. A key to the species of Leucheria, brief species descriptions, detailed illustrations, and distribution maps for each species are presented.

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“…The genus Leucheria comprises 49 species (Crisci 1976;Katinas et al 2008;Katinas et al 2018;Jara-Arancio et al 2019) distributed in Peru, Bolivia, Chile, and Argentina on the continent, plus the Falkland Islands. Most species are concentrated within the Patagonian-Andean and the Subantarctic phytogeographic domains (Cabrera and Willink 1973).…”

Section: Introductionmentioning

confidence: 99%

Leucheria cantillanensis (Nassauvieae, Asteraceae), a new species endemic to Central Chile

Lavandero¹,

Rosende²,

Pérez³

2020

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A new species, Leucheria cantillanensissp. nov., endemic to the coastal mountain range of Central Chile, is described. By using both nDNA and cpDNA, phylogenetic relationships of the new species were investigated. This new species belongs to the acaulescent/subacaulescent clade of Leucheria, which is congruent with the morphology of the species. A detailed description, distribution map, insights about its habitat, conservation status, and illustrations are provided. An updated key for acaulescent/subacaulescent species of Leucheria from Central Chile is also given.

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A New Species of Leucheria (Asteraceae, Mutisieae) from Chile

Cited by 9 publications

References 3 publications

Capitulum compartmentalization in Leucheria (Nassauvieae): Insights into the evolution of Asteraceae inflorescence

Capitulum compartmentalization in Leucheria (Nassauvieae): Insights into the evolution of Asteraceae inflorescence

A Synopsis of Leucheria (Asteraceae, Nassauvieae), with Notes on the Morphology

Leucheria cantillanensis (Nassauvieae, Asteraceae), a new species endemic to Central Chile

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