Two new species of Nolina (Nolinoideae: Asparagaceae) endemic to Western Mexico

Ruíz-Sánchez, Eduardo; Carrillo-Reyes, Pablo; Hernández‐Sandoval, Luis; Specht, Chelsea D.

doi:10.11646/phytotaxa.402.4.2

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Hydrophyllaceae and Namaceae both appear to have originated in North America and are successively sister families to the remainder of the Boraginales II (Bor II) clade (Luebert et al 2017). Another species supporting this AE in the analysis with the smaller database, Nolina bigelovii , represents the genus with 32 species half of which are endemic to Mexico (Ruiz-Sanchez et al, 2019). Geographical distribution of NolinaMichx.…”

Section: The Areas Of Endemismmentioning

confidence: 63%

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Areas of Endemism of Selected Seed Plants in Southcentral and Southwestern USA

Saghatelyan

2021

Preprint

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Areas of endemism (AEs) are fundamental entities of analysis in biogeography and a key step for biogeographical regionalization. Even though many studies have contributed to the biogeographical knowledge of southern USA flora, no endemicity analysis (EA) has been conducted that would include a large number of native seed plant species from different families. A new analysis of plant spatial patterns is important as a first step for a future updated floristic regionalization of North America North of Mexico. It has become easier to accomplish owing to the increased availability of large-scale digitized distributional data and statistical methods of biogeographic analysis. Here we identify the AEs in SC/SW USA using digitized plant specimen data available from IDigBio. We built a database with 81,851-specimen point records of 400 selected mostly angiosperm species and applied the NDM/VNDM method of endemicity analysis. We then compare the established 26 AEs in the area of study with the floristic provinces in two comparatively recent regionalization systems of USA. To understand the spatial patterns, we also pay attention to the information on relationships of the endemic species found in phylogenetic literature.

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Section: The Areas Of Endemismmentioning

confidence: 63%

“…N. bigelovii, as well as N. microcarpa, which is endemic in AE 3 (Table S1), have western ranges. The eastern range of Nolina extends from Florida in the north, through the Sierra Madre Oriental south to Oaxaca in Mexico (Ruiz-Sanchez et al, 2019). AE 6.…”

Section: The Areas Of Endemismmentioning

confidence: 99%

Areas of Endemism of Selected Seed Plants in Southcentral and Southwestern USA

Saghatelyan

2021

Preprint

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“…(Moore & Jansen, 2006), Cactaceae: Cylindropuntieae (Majure et al, 2019), Nolina Michx. (Ruiz-Sanchez et al, 2019), Garrya Douglas ex Lindl. (Burge, 2011; Nesom, 2012), and Cryptantha/Johnstonella Brand (Simpson et al, 2019) showed a geographic split into western, mostly southwestern, and southeastern clades.…”

Section: Discussionmentioning

confidence: 99%

Areas of Endemism of Plants in the South-Central and Southwestern Nearctic Region

Saghatelyan

Escalante

2023

annals

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The history and connections of the flora of south-central/southwestern (SC/SW) North America have been studied and summarized in biogeographic regionalization. However, some studies show contrasting delineations of the SC/SW North American provinces that could be better determined using quantitative methods. We aimed to find spatial patterns of a set of plants in the SC/SW United States by conducting endemicity analysis (EA) on different scales. We first built a dataset with 81,965 specimen point records of 400 species from 174 genera and 61 families of angiosperms and two genera of gymnosperms using digitized specimen data from iDigBio. We then performed EA at four different scales to identify the areas of endemism (AoEs). We obtained 28 AoEs with different cell sizes by selecting each AoE under the grid size that yielded the highest number of high-scoring species. The study region split into two significant centers of accumulation of nested or partially overlapping AoEs: the SW and SC consensus areas. In these parts of the Nearctic region, many genera/clades, among those in the dataset, showed a geographic split into western and eastern clades. The split corresponded to an environmental and physical barrier known as Cochise Filter Barrier. The Sonora–Mojave arid center, parts of South Texas, and the Chihuahuan Desert harbor basally branching taxa of several genera and even families, based on the observations of some species, which allowed identification of the AoEs.

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Diversification within Lycianthes moziniana (Capsiceae, Solanaceae)

et al. 2023

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Background: Lycianthes moziniana (Capsiceae, Solanaceae) is an endemic and widespread species in Mexico. Morphological and molecular evidence suggested three varieties (L. moziniana var. margaretiana, L. moziniana var. moziniana and L. moziniana var. oaxacana). Hypotheses: Lycianthes moziniana is integrated by differentiated lineages corresponding to the three varieties identified. Studied species: Lycianthes moziniana (Dunal) Bitter. Study sites and dates: Mexico from 2017 to 2021. Methods: We measured 11 morphological characters based on 207 herbarium specimens. Discriminant Canonical Analysis (DCA), Mahalanobis Square Distance (MD) and Canonical Classificatory Analysis (CCA) were used to uncover the differences among varieties. For geographic and climatic preferences and divergence, we used 288 records and four climatic layers. Results: Two canonical functions explained 100 % of the morphological variation and seven characters had the highest discriminatory power. In addition, MD was statistically significant. Meanwhile, the CCA recovered three groups at 77 %. The morphological evidence demonstrated the distinctiveness of L. moziniana var. moziniana. In contrast, L. moziniana var. margaretiana and L. moziniana var. oaxacana were morphologically similar. The identity test showed significant differences among Ecological Niche Models (ENMs). The evidence indicates geographic and climatic isolation among the varieties. Lycianthes moziniana var. moziniana is widespread and has intermediate overlap with the other two varieties. Lycianthes moziniana var. margaretiana and L. moziniana var. oaxacana were isolated in different biogeographical provinces and showed the lowest overlap. Conclusions: Morphological and geographic data indicates incipient speciation is occurring.

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Two new species of Nolina (Nolinoideae: Asparagaceae) endemic to Western Mexico

Cited by 5 publications

References 9 publications

Areas of Endemism of Selected Seed Plants in Southcentral and Southwestern USA

Areas of Endemism of Selected Seed Plants in Southcentral and Southwestern USA

Areas of Endemism of Plants in the South-Central and Southwestern Nearctic Region

Diversification within Lycianthes moziniana (Capsiceae, Solanaceae)

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