&lt;i&gt;Zamia lindleyi&lt;/i&gt;: A Misunderstood Species from the Highlands of Western Panama

Calonje, Michael; Blake, A. S. Taylor; Stevenson, Dennis Wm.; Holzman, Gregory; Ramos, Yan Arley

doi:10.21135/893275150.026

Cited by 4 publications

(3 citation statements)

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“…(Stevenson 1993) from the lowlands of the Colombian Chocó biogeographic region primarily due to having fernlike leaves with numerous narrow leaflets. However, several morphological and ecological differences in addition to the large geographic disjunction have since brought recognition of Z. lindleyi as a distinct and separate species from Z. chigua (Calonje et al 2012b), a recognition supported by our analyses, which place the former within the Isthmus clade and the latter in the South America clade. Norstog (1980) believed that Pacific subclade species Zamia roezlii Linden (as Z. chigua; Norstog 1986) was the most primitive species in the genus because its stable rainforest habitat allowed it to retain what he considered primitive characters such as an arborescent habit, large spermatozoids, and a large asymmetrical karyotype.…”

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confidence: 64%

A Time-Calibrated Species Tree Phylogeny of the New World Cycad Genus Zamia L. (Zamiaceae, Cycadales)

Calonje

Meerow

Griffith

et al. 2019

International Journal of Plant Sciences

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Premise of research. The genus Zamia L. (Zamiaceae), consisting of 79 species, is the most species-rich and widely distributed cycad genus in the New World and arguably the most morphologically and ecologically diverse genus in the Cycadales. However, a strong phylogenetic framework for this genus is still lacking. Methodology. We used a multilocus sequence data set of 10 independent loci (nine single-copy nuclear genes [SCNGs] and one plastid) and extensive taxon sampling (ca. 90% of species) to infer phylogenetic relationships within Zamia. We implemented a concatenated matrix analysis with maximum parsimony, a partitioned maximum likelihood (ML) analysis, and a time-calibrated Bayesian species tree-estimation approach. Diversification, historical biogeography, and ancestral character state reconstruction analyses were conducted using the species tree topology that was the most morphologically and geographically congruent. Pivotal results. We inferred a robust phylogenetic tree for the genus with a strong geographic delimitation of clades and found that four morphological characters typically used for diagnostic purposes in the genus exhibit a high degree of homoplasy. The stem group of Zamia was estimated to have originated at 68.28 Ma (95% highest posterior density [HPD] 51.0-84.5) and the crown group at 9.54 Ma (95% HPD 9.0-10.62). The majority of species richness in the genus appeared during the Pliocene and Pleistocene, with the highest diversification rates occurring in clades comprising Caribbean and South American species. Biogeographic analysis suggests a Caribbean or Mesoamerican origin for Zamia with subsequent dispersal to the Central American Isthmus and South America, where the genus reaches its maximum species and morphological diversity. Conclusions. The high degree of convergence found in multiple morphological characters has historically confounded efforts to elucidate species relationships using nonphylogenetic methods. This study presents the most species-comprehensive, well-resolved hypothesis of phylogenetic relationships within Zamia and provides a strong phylogenetic framework for further studies.

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confidence: 64%

A Time-Calibrated Species Tree Phylogeny of the New World Cycad Genus Zamia L. (Zamiaceae, Cycadales)

Calonje

Meerow

Griffith

et al. 2019

International Journal of Plant Sciences

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“…The latter is the most species rich, morphologically variable, ecologically diverse, and broadly distributed, with the highest species richness occurring in the South America and Central American Isthmus region [5]. Although the taxonomy of the genus Zamia remains in flux, the majority of discoveries in recent years have occurred in South America, including the description of nine new species, e.g., [6][7][8][9][10][11][12], and numerous taxonomic and nomenclatural clarifications, e.g., [13][14][15]. In contrast, the taxonomy of Mesoamerican Zamia species has remained relatively stable in recent years.…”

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confidence: 99%

Zamia magnifica (Zamiaceae, Cycadales): A New Rupicolous Cycad Species from Sierra Norte, Oaxaca, Mexico

et al. 2023

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Zamia magnifica (Zamiaceae), a new species endemic to Sierra Norte, Oaxaca, Mexico, is described. Zamia magnifica is characterized by having a rupicolous habit, pendent leaves bearing leaflets that are densely tomentose and pink to caramel in color when emerging, and broad oblong leaflets that are coriaceous in texture with few non-prominent denticulations and ovulate strobili with short (<4 cm) peduncles. It is compared to Z. furfuracea and Z. meermanii, the Mesoamerican Zamia species to which it shares the closest morphological resemblance.

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“…Colombia hosts over a quarter of all Zamia species, making it the most species-rich country for the genus. A considerable amount of academic and taxonomic research on Colombian zamias has taken place over the last decade, including several new species descriptions ( Lindstrom & Idarraga 2009, Calonje et al 2010, Calonje et al 2011, Calonje et al 2012a as well as taxonomic revisions ( Lindstrom 2009, Calonje et al 2012b, Calonje et al 2015. Despite these recent and significant advances in Colombian Zamia systematics, additional research is still required, because several species remain undescribed or poorly understood, especially in the Amazonian region.…”

Section: Introductionmentioning

confidence: 99%

Zamia paucifoliolata, a new species of Zamia (Zamiaceae, Cycadales) from Valle del Cauca, Colombia

2018

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Zamia paucifoliolata, a new cycad species from the Pacific lowlands of Valle del Cauca, Colombia, is described and illustrated. It is distinguished from other species of Zamia by having an underground stem typically bearing large solitary leaves with eighteen or fewer leaflets, villous strobilar axes, microsporangia borne on both the abaxial and adaxial side of microsporophylls, and seeds that are longer than 18 mm. It is compared to Z. pyrophylla, Z. cunaria, and Z. ipetiensis, species which it most closely resembles.

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<i>Zamia lindleyi</i>: A Misunderstood Species from the Highlands of Western Panama

Cited by 4 publications

References 0 publications

A Time-Calibrated Species Tree Phylogeny of the New World Cycad Genus Zamia L. (Zamiaceae, Cycadales)

A Time-Calibrated Species Tree Phylogeny of the New World Cycad Genus Zamia L. (Zamiaceae, Cycadales)

Zamia magnifica (Zamiaceae, Cycadales): A New Rupicolous Cycad Species from Sierra Norte, Oaxaca, Mexico

Zamia paucifoliolata, a new species of Zamia (Zamiaceae, Cycadales) from Valle del Cauca, Colombia

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