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53 results for “Cannabaceae”
Celtis (Cannabaceae) - whole tree (or vine) - view up trunk
Image of Celtis (Cannabaceae) - whole tree (or vine) - view up trunk
Celtis (Cannabaceae) - bark - of a large tree
Image of Celtis (Cannabaceae) - bark - of a large tree
Celtis (Cannabaceae) - whole tree (or vine) - general
Image of Celtis (Cannabaceae) - whole tree (or vine) - general
Celtis (Cannabaceae) - whole tree (or vine) - view up trunk
Image of Celtis (Cannabaceae) - whole tree (or vine) - view up trunk
Celtis sp. (Cannabaceae) - whole tree (or vine) - view up trunk
Image of Celtis sp. (Cannabaceae) - whole tree (or vine) - view up trunk
Celtis (Cannabaceae) - bark - of a large tree
Image of Celtis (Cannabaceae) - bark - of a large tree
Celtis (Cannabaceae) - whole tree (or vine) - general
Image of Celtis (Cannabaceae) - whole tree (or vine) - general
Celtis (Cannabaceae) - whole tree (or vine) - general
Image of Celtis (Cannabaceae) - whole tree (or vine) - general
Celtis sp. (Cannabaceae) - whole tree (or vine) - view up trunk
Image of Celtis sp. (Cannabaceae) - whole tree (or vine) - view up trunk
Celtis (Cannabaceae) - bark - of a large tree
Image of Celtis (Cannabaceae) - bark - of a large tree
Celtis (Cannabaceae) - fruit - as borne on the plant
Image of Celtis (Cannabaceae) - fruit - as borne on the plant
Celtis (Cannabaceae) - leaf - showing orientation on twig
Image of Celtis (Cannabaceae) - leaf - showing orientation on twig
Celtis (Cannabaceae) - bark - of a large tree
Image of Celtis (Cannabaceae) - bark - of a large tree
Celtis (Cannabaceae) - whole tree (or vine) - general
Image of Celtis (Cannabaceae) - whole tree (or vine) - general
Celtis (Cannabaceae) - whole tree (or vine) - view up trunk
Image of Celtis (Cannabaceae) - whole tree (or vine) - view up trunk
The genetic diversity of triploid Celtis pumila and its diploid relatives C. occidentalis and C. laevigata (Cannabaceae)
<p>The genus <i>Celtis</i> in eastern North America shows puzzling patterns of variation. While three species are generally recognized, many authors have suggested hybridization may be blurring the boundaries among them. Suspected hybridization between <i>C. occidentalis</i> and <i>C. pumila</i> has hampered conservation planning for the latter, which is a Threatened species in Canada. Using microsatellite markers and flow cytometry, we assessed the relationship between genetic diversity, ploidy, and morphology in this group. We confirmed the presence of two diploid species, <i>C. occidentalis</i> and <i>C. laevigata</i>, and that they do hybridize where they co-occur in southern Missouri and Illinois. We found two triploid genetic groups. These groups had distinct geographic ranges, but were morphologically very similar, corresponding to <i>C. pumila</i>. Furthermore, the triploid groups were characterized by a small number of heterozygous multi-locus genotypes. A single genotype dominated populations across Ontario, Michigan, Ohio and Pennsylvania, indicating apomictic reproduction is common in these groups. While the triploid clusters were distinct from each other, they did have strong associations with sympatric diploid species, and also with the western triploid species <i>C. reticulata</i>. The triploid <i>Celtis pumila</i> demonstrates remarkable phenotypic plasticity, with the same genotype variously presenting as dwarf shrubs in xeric, exposed sites, and subcanopy tree in mesic forests.</p>
Phylogenomic analysis of the hemp family (Cannabaceae) reveals deep cyto-nuclear discordance and provides new insights into generic relationships
<p>Cannabaceae are a relatively small family of angiosperms, but they include several species of huge economic and cultural significance: marijuana or hemp (Cannabis sativa) and hops (Humulus lupulus). Previous phylogenetic studies clarified most deep relationships in Cannabaceae, but relationships remain ambiguous among several major lineages. Here, we sampled 83 species representing all genera of Cannabaceae and utilized a new dataset of 90 nuclear genes and 82 chloroplast loci from Hyb-Seq to investigate the phylogenomics of Cannabaceae. Nuclear phylogenetic analyses revealed a robust and consistent backbone for Cannabaceae. We observed nuclear gene-tree conflict at several deep nodes in inferred species trees, also cyto-nuclear discordance concerning the relationship between Gironniera and Lozanella and the relationships among Trema s.l. (including Parasponia), Cannabis + Humulus, and Chaetachme + Pteroceltis. Coalescent simulations and network analyses suggest that observed deep cyto-nuclear discordances likeliest stem from incomplete lineage sorting (ILS); nuclear gene-tree conflict might be caused by both ILS and gene flow between species. All genera of Cannabaceae were recovered as monophyletic, except for Celtis, which consisted of two distinct clades: Celtis I (including most Celtis species) and Celtis II (including Celtis gomphophylla and Celtis schippii). We suggest that Celtis II should be recognized as the independent genus Sparrea based on both molecular and morphological evidence. Our work provides the most comprehensive and reliable phylogeny to date for Cannabaceae, enabling further exploration of evolutionary patterns across this family and highlighting the necessity of comparing nuclear with chloroplast data to examine the evolutionary history of plant groups.</p>
The genetic diversity of triploid Celtis pumila and its diploid relatives C. occidentalis and C. laevigata (Cannabaceae)
Open the record for dataset details and reuse information.
Phylogenomic analysis of the hemp family (Cannabaceae) reveals deep cyto-nuclear discordance and provides new insights into generic relationships
Open the record for dataset details and reuse information.
Data from: Trema domingensis rises like a phoenix from the ashes of Trema integerrima: a reassessment of the entire-leaved species of Neotropical Trema (Cannabaceae)
We resolve three problems concerning the three entire-leaved species of Neotropical Trema. 1) Phylogenetic and morphological results showed that T. integerrima (Beurl.) Standl., T. domingensis Urb., and T. laxiflora Lundell are a single species; therefore, we combine them under a single name. 2) The date of publication gives priority to T. integerrima, as the basionym Sponia integerrima Beurl. was published in 1856. However, the type specimen, Billberg 308 (S), is not a species of Trema but Pouzolzia obliqua (Wedd.) Wedd. (Urticaceae). The next available name for this species is T. domingensis, published in 1912. 3) The type of T. domingensis, Fuertes 312, is a mixed collection. Specimens of Fuertes 312 held at B, NY, U, and USD are T. domingensis, while those at P, G, US, and Z are Celtis trinervia Lam. We provide a historical review to understand how these problems arose and persisted unnoticed for decades.
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OpenNeuro
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