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512 results for “Apocynaceae”
Trellis-forming stems of a tropical liana Condylocarpon guianense (Apocynaceae): a plant-made safety net constructed by simple "start-stop" development
<p>Data supporting article describing mechanical and structural organisation of a climin g plant trellis system sin the tropical rainforest of French Guiana</p> <p>Tropical vines and lianas have evolved mechanisms to avoid mechanical damage during their climbing life histories. We explore the mechanical properties and stem development of a tropical climber that develops trellises in tropical rain forest canopies. We measured the young stems of <em>Condylocarpon guianensis</em> (Apocynaceae) that construct complex trellises via self-supporting shoots, attached stems and unattached pendulous stems. The results suggest that in this species there is a size (stem diameter) and developmental threshold at which plant shoots will make the developmental transition from stiff young shoots to later flexible stem properties. Shoots that do not find a support remain stiff, becoming pendulous and retaining numerous leaves. The formation of a second TYPE II (lianoid) wood is triggered by attachment, guaranteeing increased flexibility of light-structured shoots that transition from self-supporting searchers to inter-connected net-like trellis components. The results suggest that this species shows a “hard-wired” development that limits self-supporting growth among the slender stems that make up a liana trellis. The strategy is linked to a stem-twining climbing mode and promotes a rapid transition to flexible trellis elements in cluttered densely branched tropical forest habitats. These are situations that are prone to mechanical perturbation via wind action, tree falls and branch movements. The findings suggest that some twining lianas are mechanically fine-tuned to produce trellises in specific habitats. Trellis building is carried out by young shoots that can perform very different functions via subtle development changes in order to ensure a safe space occupation of the liana canopy.</p>
Dataset of - Comparative architectural analysis of Cerberiopsis genus (Apocynaceae) -
<p>This dataset was used for a comparative architectural analysis of the genus <em>Cerberiopsis</em> (Apocynaceae), endemic to New Caledonia.<br> The data were collected on several areas of the territory (GPS coordinates provided) from 11/05/2021 to 28/07/2021.<br> For each individual described an architectural drawing is associated.</p>
Appendix 1 in Contribution to chromosome numbers and phylogeny of Turkish Vincetoxicum Wolf (Apocynaceae, Asclepiadoideae)
Appendix 1. Locality information, voucher specimens and accession numbers for sequences in GenBank (NCBI) of the examined specimens used for molecular (Mol.) and cytological (Cyt.) studies. Sequences previously published are indicated in brackets (A=Liede-Schumann et al. 2016, B=Liede- Schumann et al. 2012, C=Liede et al. 2002, D=Liede 2001, E=Berner & Carter Unpublished, F=Lahaye et al. 2005, G=Liede & Täuber 2002, H=Goyder et al. 2007, PS=present study).
Fig. 2 in Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil
Fig. 2. Habitat and distribution of Hemipogon trilobatus Bitencourt & Rapini sp. nov. A. Open savannah in Chapada dos Veadeiros, state of Goiás, Brazil. Photo by CB. B. Map showing the geographic distribution of H. trilobatus sp. nov. in the Cerrado domain (shaded area at reference map in A) and its occurrence (black star) nearby the Chapada dos Veadeiros National Park. Images and distribution maps were built and exported using ArcGIS online (https://www.arcgis.com). © Esri and its licensors, all rights reserved.
Fig. 1 in Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil
Fig. 1. Hemipogon trilobatus Bitencourt & Rapini sp. nov. A. Habitus. B. Cyme with two flowers and a bud. C. Flower. D. Flower with calyx and two corolla lobes removed to show the gynostegium. E. Corolla lobe, adaxial view. F. Anther with a staminal corona lobe basally attached. G. Corona lobe showing the 3-lobed apex, adaxial view. H. Gynostegium, viewed from above. I. Pollinarium. Drawn by Pétala Gomes Ribeiro from the holotype (IBGE[33546]).
Amsonia tabernaemontana (Apocynaceae) - inflorescence - whole - unspecified
Image of Amsonia tabernaemontana (Apocynaceae) - inflorescence - whole - unspecified
Amsonia tabernaemontana (Apocynaceae) - leaf - on upper stem
Image of Amsonia tabernaemontana (Apocynaceae) - leaf - on upper stem
Amsonia tabernaemontana (Apocynaceae) - stem - showing leaf bases
Image of Amsonia tabernaemontana (Apocynaceae) - stem - showing leaf bases
Amsonia tabernaemontana (Apocynaceae) - inflorescence - frontal view of flower
Image of Amsonia tabernaemontana (Apocynaceae) - inflorescence - frontal view of flower
Amsonia tabernaemontana (Apocynaceae) - whole plant - in flower - general view
Image of Amsonia tabernaemontana (Apocynaceae) - whole plant - in flower - general view
Apocynum cannabinum (Apocynaceae) - stem - showing leaf bases
Image of Apocynum cannabinum (Apocynaceae) - stem - showing leaf bases
Apocynum cannabinum (Apocynaceae) - leaf - unspecified
Image of Apocynum cannabinum (Apocynaceae) - leaf - unspecified
Apocynum cannabinum (Apocynaceae) - inflorescence - frontal view of flower
Image of Apocynum cannabinum (Apocynaceae) - inflorescence - frontal view of flower
Apocynum cannabinum (Apocynaceae) - whole plant - in flower - general view
Image of Apocynum cannabinum (Apocynaceae) - whole plant - in flower - general view
Apocynum cannabinum (Apocynaceae) - leaf - on upper stem
Image of Apocynum cannabinum (Apocynaceae) - leaf - on upper stem
Apocynum cannabinum (Apocynaceae) - inflorescence - whole - unspecified
Image of Apocynum cannabinum (Apocynaceae) - inflorescence - whole - unspecified
Vinca minor (Apocynaceae) - whole plant - in flower - general view
Image of Vinca minor (Apocynaceae) - whole plant - in flower - general view
Vinca minor (Apocynaceae) - stem - showing leaf bases
Image of Vinca minor (Apocynaceae) - stem - showing leaf bases
Vinca minor (Apocynaceae) - leaf - on upper stem
Image of Vinca minor (Apocynaceae) - leaf - on upper stem
Vinca minor (Apocynaceae) - inflorescence - lateral view of flower
Image of Vinca minor (Apocynaceae) - inflorescence - lateral view of flower
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