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21 results for “Zehneria”
Zehneria neorensis: Additional phylogenies and sequence information
<p>Basic data and supplement for Ranjan et al. 2022, Biogeography of <em>Zehneria</em> (Cucurbitaceae) and a New Species from India, Systematic Botany.</p> <p><em>Zehneria</em> is one of the most diverse genera in Cucurbitaceae with 75 accepted species mainly in Southeast Asia and tropical Africa. We describe <em>Zehneria neorensis</em>, a new species from Neora Valley in the mountains of West Bengal, India, which has 7–10 cm long twisted fruiting pedicels, the longest pedicels reported in the genus so far. Based on morphological data, we also suggest the transfer of <em>Melothria morobensis</em> to the genus <em>Zehneria</em>. With a molecular phylogenetic and global biogeographic analysis based on 3856 nucleotides of plastid and nuclear ribosomal DNA, we demonstrate that the genus <em>Zehneria</em> most likely originated on the African continent 24 (30-19) million years ago and spread from there at least five times to Madagascar and three times to Asia. <em>Zehneria neorensis</em> represents an independent colonization event from Africa to India about 11 (15–7) million years ago. Three lineages reached New Guinea/Australia and finally moved into Polynesia. We infer a rate of at least 20 long-distance dispersal (LDD) events per 10 million years in the genus. This high LDD frequency is most likely a result of the small berry fruits and small flattened seeds of <em>Zehneria</em>, which seem perfectly adapted to long-distance bird dispersal. Field observations are needed to investigate a potential effect of the newly discovered extended and coiling pedicels in <em>Zehneria neorensis</em> on seed dispersal efficiency. The new species adds to a growing list of rather old Cucurbitaceae lineages in the Himalayan foothills, supporting the hypothesis of long climatic stability in the region.</p>
Zehneria neorensis: Additional phylogenies and sequence information
Open the record for dataset details and reuse information.
FIGURE 2 in Molecular phylogenetic analyses of Cucurbitaceae tribe Benincaseae urge for merging of Pilogyne with Zehneria
FIGURE 2. Bayesian consensus tree with Bayesian posterior probabilities (>0.80) and maximum likelihood bootstrap values (>60%) shown at the nodes.
FIGURE 1. Zehneria subcoriacea Y.D. Zhou & Q.F. Wang. A. Male plant. B & C. Male flowers. D & E. Female flowers. F. Fruit. G in Zehneria subcoriacea (Cucurbitaceae), a New Species from Kenya
FIGURE 1. Zehneria subcoriacea Y.D. Zhou & Q.F. Wang. A. Male plant. B & C. Male flowers. D & E. Female flowers. F. Fruit. G. Seed. (Drawn by N. Jia)
FIGURE 3 in Zehneria subcoriacea (Cucurbitaceae), a New Species from Kenya
FIGURE 3. Distribution of Zehneria subcoriacea Y.D. Zhou & Q.F. Wang, based on examined collections with coordinates. K1–K7 indicates plant distribution regions of Flora of Tropical East Africa (Jeffrey 1967).
FIGURE 2. Zehneria subcoriacea Y.D. Zhou & Q.F. Wang. A. Male plant. B. Leaves. C & D. Male flowers. E, F & G. Female flowers. H. Fruit. I in Zehneria subcoriacea (Cucurbitaceae), a New Species from Kenya
FIGURE 2. Zehneria subcoriacea Y.D. Zhou & Q.F. Wang. A. Male plant. B. Leaves. C & D. Male flowers. E, F & G. Female flowers. H. Fruit. I. Seeds (from Mungai 179/89, EA!). Photographs: G.W. Hu (A), Y.D. Zhou (B–I).
FIGURE 2 in Zehneria longiflora (Cucurbitaceae), a new species from Kenya
FIGURE 2. Photographs of Zehneria longiflora. A. Male plant in the wild. B. Female plant. C. Roots. D. Male inflorescence. E–G. Male flowers. H. Adaxial view of leaves. I. Abaxial view of leaves (showing position of glands). J. Female inflorescence (showing probract). K–O. Female flowers. P. Fruit. Q. Seed. Scale bars: H, I = 5 cm; E, G, M, N, P = 5 mm; F, L, O = 1 mm.
FIGURE 1 in Zehneria longiflora (Cucurbitaceae), a new species from Kenya
FIGURE 1. Line drawing of Zehneria longiflora. A. Branch of male plant. B. Branch of female plant. C. Roots. D. Staminate flower. E. Pistillate flower. F. Fruit. G. Seed. H. Nerves on basal part of adaxial leaf surface (showing sparsely scattered puberulous hairs on middle vein).
FIGURE 2 in Zehneria monocarpa (Cucurbitaceae), a new species from the relicts of Kenya's coastal forests
FIGURE 2. Photographs of Zehneria monocarpa. A. Branch with female flowers. B. Branch with male inflorescence. C. Open female flower showing stigma, style and hair inside corolla. D. Male flower. E. Female flower with corolla removed. F. Open male flower showing stamens, disk and hairy corolla. G. Cross-sectional dissection of fruit. H. Ripe fruits. I. Seed. Scale bar: the ruler used in the photos is calibrated in centimeter (cm; thick lines). Photographs by G.W. Hu.
FIGURE 1 in Zehneria monocarpa (Cucurbitaceae), a new species from the relicts of Kenya's coastal forests
FIGURE 1. Photographs of Zehneria monocarpa. A. Habit. B. Branch with fruits. C. Abaxial leaf side of mature plant (showing glands). D. Adaxial leaf side of mature plant. E. Palmately lobed leaf of juvenile stem (abaxial). F. Palmately lobed leaf of juvenile stem (adaxial). G. Young branch. H. Root. I. A node with (i) Probract. Scale bar: the ruler used in the photos is calibrated in centimeter (cm; thick lines). Photographs: A, C, D, I. by G.W. Hu; B, E–G. by V.M. Ngumbau.
FIGURE 2. Zehneria palmatiloba. A. Stem with male inflorescences. B in Zehneria palmatiloba, a new species of Cucurbitaceae from Atlantic Central Africa
FIGURE 2. Zehneria palmatiloba. A. Stem with male inflorescences. B. Male inflorescence (most flowers fallen). C. Male flower. D. Longitudinal section of male flower. E. Fragment of stem with female inflorescences. F. Female flower. G. Longitudinal section of female flower (without the ovary). H. Fruit. I. Seed. From Carvalho 6307 (A–D) and Carvalho 5709 (E–I). Drawing by O. Lachenaud.
FIGURE 4 in Zehneria palmatiloba, a new species of Cucurbitaceae from Atlantic Central Africa
FIGURE 4. Known distribution of Zehneria palmatiloba. Areas above 500 m in elevation are in dark grey.
FIGURE 3 in Zehneria palmatiloba, a new species of Cucurbitaceae from Atlantic Central Africa
FIGURE 3. Leaves of Zehneria palmatiloba (A) and Momordica charantia (B), seen from above, for comparison. From Lachenaud et al. 3055 (A) and plant not collected, Kourou, French Guiana, December 2015 (B). Photos: O. Lachenaud.
Supplementary material 1 from: Wei N, Zhong Z-X, Melly DK, Kipkoech S, Watuma BM, Ngumbau VM, Kamau P, Hu G-W, Wang Q-F (2020) Zehneria grandibracteata (Cucurbitaceae), an overlooked new species from western Kenyan forests. PhytoKeys 165: 85-98. https://doi.org/10.3897/phytokeys.165.57399
Modified CTAB protocol on the base of Doyle and Doyle (1987)
Figure 2 from: Wei N, Zhong Z-X, Melly DK, Kipkoech S, Watuma BM, Ngumbau VM, Kamau P, Hu G-W, Wang Q-F (2020) Zehneria grandibracteata (Cucurbitaceae), an overlooked new species from western Kenyan forests. PhytoKeys 165: 85-98. https://doi.org/10.3897/phytokeys.165.57399
Figure 2 Distribution map of Zehneria grandibracteata in Kenya. Red dots indicate its documented localities.
Figure 4 from: Wei N, Zhong Z-X, Melly DK, Kipkoech S, Watuma BM, Ngumbau VM, Kamau P, Hu G-W, Wang Q-F (2020) Zehneria grandibracteata (Cucurbitaceae), an overlooked new species from western Kenyan forests. PhytoKeys 165: 85-98. https://doi.org/10.3897/phytokeys.165.57399
Figure 4 Photographs showing reproductive characters of Zehneria grandibracteataA male inflorescence B male flower, side view C male flower, top view D dissected male flower showing disc and stamens E female inflorescence F female flower, side view G female flower, top view H dissected female flower showing staminodes I pistil and disc J infructescence K cross-section of fruit. Scale bars: 2 mm (B–D, F–I); 1 cm (J, K).
Figure 3 from: Wei N, Zhong Z-X, Melly DK, Kipkoech S, Watuma BM, Ngumbau VM, Kamau P, Hu G-W, Wang Q-F (2020) Zehneria grandibracteata (Cucurbitaceae), an overlooked new species from western Kenyan forests. PhytoKeys 165: 85-98. https://doi.org/10.3897/phytokeys.165.57399
Figure 3 Photographs showing vegetative characters of Zehneria grandibracteataA climbing stem of female plant in habitat B adaxial lamina C creeping stem D abaxial lamina E probracts at different developing stages F tendril and probract at base of female inflorescence. Scale in picture E represents cm.
Figure 1 from: Wei N, Zhong Z-X, Melly DK, Kipkoech S, Watuma BM, Ngumbau VM, Kamau P, Hu G-W, Wang Q-F (2020) Zehneria grandibracteata (Cucurbitaceae), an overlooked new species from western Kenyan forests. PhytoKeys 165: 85-98. https://doi.org/10.3897/phytokeys.165.57399
Figure 1 Bayesian tree inferred from the nrITS sequences dataset to elucidate the phylogenetic position of Zehneria grandibracteata. Bayesian posterior probability values > 0.9 and bootstrap values ≥ 70% are shown below the branches. The new species is highlighted in bold and red colour and Z. scabra is noted in blue colour.
FIGURE 1 in Molecular phylogenetic analyses of Cucurbitaceae tribe Benincaseae urge for merging of Pilogyne with Zehneria
FIGURE 1. Summary of taxonomic history of Zehneria, Neoachmandra and Pilogyne.
FIGURE 1 in A new combination in Zehneria (Cucurbitaceae)
FIGURE 1. The holotype (M.S.Clemens 11330 bis) of Zehneria morobensis in MICH.
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