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16 results for “Loropetalum”
FIGURE 4 in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 4. Loropetalum axillare in the wild (Dafengmen Scenic Area, Zengcheng District, Guangzhou, Guangdong). A. Habitat. B. Habitat. C–H. Synflorescence. I–J. Capsules. A–J: All photos by You-Sheng Chen based on Y. S. Chen, Y. C. Xu et Y. P. Zeng 22241 (IBSC).
FIGURE 3 in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 3. ML tree inferred from ITS and ETS sequences. The numbers above and below branches are bootstrap values (BS) and Bayesian posterior probability (PP) from BI, respectively. Loropetalum axillare sp. nov. is marked with red color.
FIGURE 2 in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 2. Loropetalum subcordatum (Cultivated in South China Botanical Garden Guangzhou, Guangdong, China). A. Habitat. B. Branchlet. C. Branchlet. D. Leaves. E. Stipule. F. Petiole. G–L. Synflorescence. A–L: Photos by Zi-Chao Jin and You-Sheng Chen based on Z.C. Jin HZ202301 (IBSC).
FIGURE 6 in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 6. Type of Loropetalum axillare (China. Guangdong: Guangzhou, Zengcheng District, Dafengmen Scenic Area, elev. 200–400 m, 11 September 2022, Y. S. Chen, Y. C. Xu et Y. P. Zeng 22241). A–B. Holotype (IBSC0904409), C. Isotype (IBSC0904411), D. Isotype (IBSC0904410).
Fig. 6 in From glacial refugia to wide distribution range: demographic expansion of Loropetalum chinense (Hamamelidaceae) in Chinese subtropical evergreen broadleaved forest
Fig. 6 Mismatch distribution analysis detected unimodel distributions with SSD and HRag statistics at the species level
Fig. 4 a in From glacial refugia to wide distribution range: demographic expansion of Loropetalum chinense (Hamamelidaceae) in Chinese subtropical evergreen broadleaved forest
Fig. 4 a Genetic admixture analysis conducted on AFLP data for L. chinense, L. chinense var. rubrum (CUL), and L. subcordatum (LS). Each vertical bar represents an individual and its assignment proportion into one of six population clusters. b Genetic structuring of populations based on AFLP data. The map of the individual assignment in each population to K = 6 clusters (C1–C6) is based on STRUCTURE analysis of the AFLP data. Each cluster is represented by a different color
FIGURE 2. Loropetalum flavum Aver., P.K. Endress & K.S. Nguyen. A in Loropetalum flavum (Hamamelidaceae), a new species from northern Vietnam
FIGURE 2. Loropetalum flavum Aver., P.K. Endress & K.S. Nguyen. A—Pressed inflorescence with half of the flowers removed. B—Scape. C—Flattened flower, side view. D—Flattened flowers with apical part of petals removed, side view. E—Flattened flower with frontal sepals removed, side view. F—Flattened flower with frontal sepals, petals and stamens removed, side view. G—Flattened 4, 5 and 6-merous flowers, view from below. H—Sepals, abaxial side. I—Sepals, adaxial side. J—Flower disc with frontal sepals, petals and stamens removed, side view. K—Intact flower disc. L—Flower disc with disc lobes, frontal and oblique side views (petals and stamens removed). M—Intact stamen, view from abaxial side. N—Stamens, side, abaxial and adaxial views at a different stage of thecae opening. O—Upper part of ovary with styles, side view. P—Upper part of ovary with styles, view from above. Q—Ovary, sagittal section. R— Median leaf vein on abaxial surface of lamina near its base. S—Leaf, abaxial surface. Photos were made from fresh material preserved in alcohol, prior to preparation of type herbarium specimens (VR 265). All photos, correction and plate design by L. Averyanov.
FIGURE 1. Loropetalum flavum Aver., P.K. Endress & K.S. Nguyen. A in Loropetalum flavum (Hamamelidaceae), a new species from northern Vietnam
FIGURE 1. Loropetalum flavum Aver., P.K. Endress & K.S. Nguyen. A—Flowering tree in natural habitat. B—Flowering branch. C–E— Inflorescences. F—Flattened branch, adaxial view. G—Flattened branch, abaxial view. H—Petiole. I—Petiole indumentum. J—Leaves, adaxial surface. K—Leaves, abaxial surface. L—Young branchlet. M—Scape. N—Flattened inflorescence, side view. O—Intact flowers, frontal and half-side views. P—Intact flowers, side view. All photos were made from plant prior to preparation of the type herbarium specimens (VR 265). Photos by L. Averyanov and Khang Sinh Nguyen, correction and plate design by L. Averyanov.
Data from: A comparative study on genetic effects of artificial and natural habitat fragmentation on Loropetalum chinense (Hamamelidaceae) in Southeast China
Elucidating the demographic and landscape features that determine the genetic effects of habitat fragmentation has become fundamental to research in conservation and evolutionary biology. Land-bridge islands provide ideal study areas for investigating the genetic effects of habitat fragmentation at different temporal and spatial scales. In this context, we compared patterns of nuclear microsatellite variation between insular populations of a shrub of evergreen broad-leaved forest, Loropetalum chinense, from the artificially created Thousand-Island Lake (TIL) and the Holocene-dated Zhoushan Archipelago of Southeast China. Populations from the TIL region harboured higher levels of genetic diversity than those from the Zhoushan Archipelago, but these differences were not significant. There was no correlation between genetic diversity and most island features, excepting a negative effect of mainland–island distance on allelic richness and expected heterozygosity in the Zhoushan Archipelago. In general, levels of gene flow among island populations were moderate to high, and tests of alternative models of population history strongly favoured a gene flow-drift model over a pure drift model in each region. In sum, our results showed no obvious genetic effects of habitat fragmentation due to recent (artificial) or past (natural) island formation. Rather, they highlight the importance of gene flow (most likely via seed) in maintaining genetic variation and preventing inter-population differentiation in the face of habitat 'insularization' at different temporal and spatial scales.
Data from: A comparative study on genetic effects of artificial and natural habitat fragmentation on Loropetalum chinense (Hamamelidaceae) in Southeast China
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FIGURE 7 in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 7. Distribution of Loropetalum axillare (red circle).
FIGURE 1 in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 1. Loropetalum chinense in the wild (Qingyuan, Guangdong, China). A. Habitat. B–E. Synflorescence. F. Leaves. G. Leaves. H. Synflorescence. I. Capsules. A–I: All photos by You-Sheng Chen based on Y.S. Chen & Y.C. Xu 22260 (IBSC).
FIGURE 5. Loropetalum axillare. A. Branch. B. Adaxial leaf. C. Abaxial leaf. D. Branchlet. E. Synflorescence. F. Flower. G. Flower. H. Stamens. I. Staminodes and styles. J. Stamens. K in Loropetalum axillare (Hamamelidaceae), a new species from Guangdong, China
FIGURE 5. Loropetalum axillare. A. Branch. B. Adaxial leaf. C. Abaxial leaf. D. Branchlet. E. Synflorescence. F. Flower. G. Flower. H. Stamens. I. Staminodes and styles. J. Stamens. K. Cross section of the ovary. L. Capsules. M. Capsule. N. Seeds. A–N: all photos by ZiChao Jin based on the type, Y. S. Chen, Y. C. Xu et Y. P. Zeng 22241 (IBSC).
Fig. 3 in From glacial refugia to wide distribution range: demographic expansion of Loropetalum chinense (Hamamelidaceae) in Chinese subtropical evergreen broadleaved forest
Fig. 3 The geographic distribution and respective frequency of the 12 haplotypes (A–L) among the 56 populations and the 95 % plausible network of these cpDNA haplotypes. The size of each circle corresponds to the frequency of each haplotype. Small solid circles
Fig. 2 Potentially suitable areas for L in From glacial refugia to wide distribution range: demographic expansion of Loropetalum chinense (Hamamelidaceae) in Chinese subtropical evergreen broadleaved forest
Fig. 2 Potentially suitable areas for L. chinense predicted by ecological niche modeling (ENM) using climatic variables at four different periods. Suitable and unsuitable habitats are displayed as colors of red and gray, respectively, where red represents the habitat suitability (occurrence probability) higher than 15 %. Black dots represent the points of sampled populations in our study. a The simulated distribution range at the Last Interglacial (LIG). b Potentially suitable areas projected in comparison with a layer of GIS-based vegetation map at the Last
Fig. 1 in From glacial refugia to wide distribution range: demographic expansion of Loropetalum chinense (Hamamelidaceae) in Chinese subtropical evergreen broadleaved forest
Fig. 1 Map of the sample locations. The 56 populations (1–56) of L. chinense were examined across its whole distribution range in China and Japan. Two populations of L. chinense var. rubrum (57–58) and two populations of L. subcordatum (59–60) were also sampled, respectively. Numbers 1–60 (ingroup and outgroup populations) denote the population
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