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56 results for “sect. Platycentrum”
FIGURE 1 in Begonia scorpiuroloba, a new species in Begonia sect. Platycentrum (Begoniaceae) from southern Guangxi of China
FIGURE 1. Habitat and morphology of B. scorpiuroloba D.K.Tian & Q.Tian (A–K), leaf morphology of B. pedatifida H. Lév. (L) A. Habitat showing a patch of individuals; B. Single plant; C. Rhizome; D. Leaf with basal obtuse angle and variation in both leaf color (upper: adaxial, lower: abaxial) and lobe shape; E. Young inflorescence with bracts; F. Inflorescence with opening male flower (front view) and flower close-up view (right); G. Female flower showing front view (left) and back view (right); H. Side view of female flower (arrow indicates two bractlets on the pedicel near ovary); I. Style and stigma; J. Subequal tepals of female flower; K. Close-up of ovary dissection; L. B. pedatifida showing variation of leaf morphology from two different locations (Left two: Dujiangyan population of Sichuan province; Right: Emeishan population of the same province)
FIGURE 3 in Begonia fenshuilingensis, a new species in Begonia sect. Platycentrum (Begoniaceae) from southeastern Yunnan, China
FIGURE 3. Distribution of B. fenshuilingensis(★), B. daweishanensis (●), B. dryadis (▲), and B. hekouensis(◆).
FIGURE 5 in Begonia fenshuilingensis, a new species in Begonia sect. Platycentrum (Begoniaceae) from southeastern Yunnan, China
FIGURE 5. Begonia dryadis (A–M) and Begonia hekouensis (N–P), showing features comparable to B. fenshuilingensis. A. Habitat; B. Adaxial leaf blade; C. Abaxial leaf blade; D, E. Inflorescences; F. Bract; G. Front view of staminate flower; H. Back view of staminate flower; I. Cylindrical androecium; J. Front view of pistillate flower; K. Back view of pistillate flower; L. Lateral view of ovary showing abaxial wing; M. Cross section of ovary; N. Adaxial leaf blade; O. Lateral view of staminate flower; P. Lateral view of pistillate flower. (Photos: Z.X. Liu)
FIGURE 2 in Begonia fenshuilingensis, a new species in Begonia sect. Platycentrum (Begoniaceae) from southeastern Yunnan, China
FIGURE 2. Habitat and morphology of Begonia fenshuilingensis X.X.Feng, R.K.Li & Z.X.Liu. A. Habitat; B. Creeping rhizome; C. Membranous squamae; D. Creeping rhizome; E. Stipule; F. Leaf blade (adaxial); G. Leaf blade (abaxial); H. Erect stem with young inflorescence; I. Inflorescence; J. Bract; K. Front view of staminate flower; L. Back view of staminate flower; M. Lateral view of staminate flower; N. Spheroid androecium; O. Front view of pistillate flower; P. Back view of pistillate flower; Q. R. Lateral view of pistillate flower; S. Ovary & style; T. Stigma; U. Cross section of ovary; V. Mature capsule. (Photos: A, V. by R.K. Li; B–U by Z.X. Liu)
FIGURE 4 in Begonia fenshuilingensis, a new species in Begonia sect. Platycentrum (Begoniaceae) from southeastern Yunnan, China
FIGURE 4. Bayesian inference phylogeny showing the position of the newly described B. fenshuilinensis within sect. Platycentrum based on nuclear ITS sequences. Nodes with bpp <0.50 have been collapsed. Sectional placement of taxa is indicated by the following abbreviations: Coe: Coelocentrum, Dip: Diploclinium, Pla: Platycentrum, Rei: Reichenheimia, Tet: Tetraphila. The numbers after the species names indicate Genbank accession numbers. The samples of new species are marked with black stars.
FIGURE 1 in Begonia caryotarum (Begonia sect. Platycentrum), a new species from southeast Yunnan, China
FIGURE 1. Vegetative characters of Begonia caryotarum. A, habitat (arrows indicating three individuals); B, whole individuals; C, a green-leaved individual (arrow indicating a mature capsule); D, a white-spotted individual; E, rhizome and stipules (arrow indicating persistent stipules); F, adaxial view of brownish-red blade; G, abaxial view of brownish-red blade; H, adaxial view of green blade; I, abaxial view of green blade.
FIGURE 2 in Begonia caryotarum (Begonia sect. Platycentrum), a new species from southeast Yunnan, China
FIGURE 2. Reproductive characters of Begonia caryotarum. A–B, inflorescences; C, male and female flowers; D–E, staminate flower and its androecium; F–H, pistillate flower and its style and stigma; I–J, immature fruits; K–M, cross sections of ovaries from top to bottom.
FIGURE 4. Begonia wenshanensis C.M in Begonia tuanii (sect. Platycentrum, Begoniaceae), a new species from Lao Cai Province, North Vietnam
FIGURE 4. Begonia wenshanensis C.M.Hu ex C.Y.Wu & T.C.Ku. A, B. Habits; C. Immature inflorescence, also showing bracts; D. Inflorescence; E. Staminate flowers, face and side views; F. Pistillate flower. All photos from Peng 20516 by C.-I Peng.
FIGURE 2. Begonia tuanii T.S.Hoang & C.W.Lin. A in Begonia tuanii (sect. Platycentrum, Begoniaceae), a new species from Lao Cai Province, North Vietnam
FIGURE 2. Begonia tuanii T.S.Hoang & C.W.Lin. A. Habit; B, B'. Portion of leaf, upper and lower surfaces; C. Stipule; D–D''. Bracts; D'''. Bracteole; E, E'. Staminate flower, face and side views; F, F', F''. Stamens dorsal, ventral and side views; G, G'. Pistillate flower, face and side views; H, H'. Style and stigmatic band, dorsal and ventral views; I. Cross section of ovary.
FIGURE 3. Begonia tuanii T.S.Hoang & C.W.Lin. A, B in Begonia tuanii (sect. Platycentrum, Begoniaceae), a new species from Lao Cai Province, North Vietnam
FIGURE 3. Begonia tuanii T.S.Hoang & C.W.Lin. A, B. Habit and habitat; C. Leaf, upper and lower views; D. Portion of leaf, upper surface, E. same, lower surface; F. Inflorescence; G. Stipule, also showing stem and petioles; H. Immature inflorescence, also showing bracts; I. Staminate flowers; J. Androecium; K. Pistillate flower; L. Cross section of ovary. All photos from by Hoang Thanh Son.
FIGURE 1 in Begonia tuanii (sect. Platycentrum, Begoniaceae), a new species from Lao Cai Province, North Vietnam
FIGURE 1. Distribution map of Begonia tuanii (yellow star), B. fordii (pink circle), B. hymenocarpa (green square) and B. wenshanensis (blue triangle).
FIGURE 5 A–C. B in Begonia pulchrifolia (sect. Platycentrum), a new species of Begoniaceae from Sichuan of China
FIGURE 5 A–C. B. dielsiana (TDK-2119): A. Habit and foliage; B. Medium-sized individual with fruits; C. Flowers and ovary dissection (upper: 4-petalled male flowers; lower two: 6-petalled female flowers at different stages). D–F. B. emeiensis (TDK-2249): D. Habit and foliage; E. Flower front view (upper three: 6-petalled female flowers; lower one: 4-petalled male flower); F. Female flowers with 6, 5 petals. (Photos by Daike Tian)
FIGURE 4 in Begonia pulchrifolia (sect. Platycentrum), a new species of Begoniaceae from Sichuan of China
FIGURE 4. Bayesian inference of the phylogenetic position of the newly described Begonia pulchrifolia within the Sect. Platycentrum based on nuclear ITS sequences. Nodes with bpp <0.50 have been collapsed. Sectional placement of taxa is indicated by the following abbreviations: Aug: Augustia, Coe: Coelocentrum, Dip: Diploclinium, Pla: Platycentrum, Rei: Reichenheimia, Sph: Sphenanthera. Numbers after the species names indicate different populations. The putative new species is indicated in bold.
FIGURE 2. A–M. B in Begonia pulchrifolia (sect. Platycentrum), a new species of Begoniaceae from Sichuan of China
FIGURE 2. A–M. B. pulchrifolia (TDK-2241, 2243, Photos by Daike Tian). A. Habit and foliage; B. Large blooming mature individual; C. Diversity in leaf color and shallow lobes to rarely deep-divided in large individuals; D. Commonly seen short adaxial hairs; E. Rarely seen longer adaxial hairs; F. Side-view of male flower with hairs on outer petals; G. Front view of male flower; H. Stamens; I–J. Side and front views of female flower; K. Cross-section of ovary; L. Fruits with unequal wings; M. Mature seeds.
FIGURE 1. A–K in Begonia pulchrifolia (sect. Platycentrum), a new species of Begoniaceae from Sichuan of China
FIGURE 1. A–K Begonia pulchrifolia (TDK-2241, 2243, CSH). A. Habit; B. Commonly seen short rigid hairs on leaf surface; C. Longer hairs rarely seen in few individuals; D–F. Male flower: front view and stamens; G–I. Female flower (G—front view, H—style and stigma, I—middle cross-section of ovary); J–K: Capsule with three unequal wings. (Drawn by Yanxin Piao)
FIGURE 2. Bayesian 50 in Begonia difformis comb. & stat. nov. (Sect. Platycentrum, Begoniaceae), a new species segregated from B. palmata D. Don
FIGURE 2. Bayesian 50% majority rule consensus tree base on nrITS DNA sequence. Numbers adjacent to the branches are posterior probabilities.
FIGURE 1 in Begonia difformis comb. & stat. nov. (Sect. Platycentrum, Begoniaceae), a new species segregated from B. palmata D. Don
FIGURE 1. Begonia difformis (A, B, E, F) and B. palmata (C, D). A. Habitat. B. Habit. C. Male and female flowers. D, E. Abaxial surface of staminate flower, note the red-m on tepals of B. difformis (E). F. Pistillate flower. Scale bars A–C. 4 cm. D–F. 1 cm.
FIGURE 3. Begonia naga. A in Begonia naga (Begoniaceae, sect. Platycentrum), a new species from Nagaland, India
FIGURE 3. Begonia naga. A. Habit; B. Lamina adaxial surface; C. Male flower; D. Androecium; E. Single stamen; F. Female flower; G. Spirally twisted stylar branch; H. Fruit; I. Cross section of ovary; J. Seed.
FIGURE 2. Begonia naga.A in Begonia naga (Begoniaceae, sect. Platycentrum), a new species from Nagaland, India
FIGURE 2. Begonia naga.A. Habit; B. Showing caulescent nature during flowering; C. Inflorescence with female flowers; D. Male flower; E. Female flower; F. Tepals; G. Tepals; H. Androecium; I. Stamens; J. Style; K. Stylar branch separated; L. Cross section of ovary; M. Scanning electron microscope (SEM) image of Seed.
FIGURE 3. Begonia satelloides Y.M.Shui, H.Q.Nguyen & W.H in Two new baccate species of Begonia sect. Platycentrum (Begoniaceae) from Vietnam
FIGURE 3. Begonia satelloides Y.M.Shui, H.Q.Nguyen & W.H.Chen sp. nov. (A, H, L from H.Q. Nguyen et al. CK373; B–K from holotype) A. Plant and habitat (A1: Young leaf; A2: Leaf; A3: Leaf Base; A4: Abaxial leaf surface showing the prominent venation); B. Front view of male flower; C. Lateral view of male flower; D. Stamens; E. Front view of female flower; F. Lateral view of female flower; G. Styles; H. Nearly mature fruits; I. Lateral view of young fruit; J. Front view of young fruit; K. Rear view of young fruit; L. Rear view of fruit; M. Cross section of young fruit, sectioned in the middle of the organ. Scale bars: A = 4 cm, A1–A4 = 1 cm, B, C, E, F = 5 mm, D, G = 2 mm, H–M = 1 cm. (A, H, L and M photographed by Y.M. Shui; A1–4 by H.Q. Nguyen; B–G and I–K by S. Radbouchoom)
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