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229 results for “stamen”
FIGURE. Thalictrum atriplex in the wild (Kangding county in western Sichuan, China, the type locality). A. Habitat. B. Habit. C. Roots. D. Portion of stem. E. Leaf (left: adaxial side; right: abaxial side). F. Leaflet (adaxial side). G. Portion of inflorescence. H. Flower. I. Sepal (left: adaxial side; right: abaxial side). J. Stamens. K. Carpels. L. Aggregate fruits (immature). M. Achenes (immature). Photographed by Y.P. Zeng. in Thalictrum spiristylum (Ranunculaceae), described from northwestern Yunnan, China, is merged with T. atriplex
FIGURE. Thalictrum atriplex in the wild (Kangding county in western Sichuan, China, the type locality). A. Habitat. B. Habit. C. Roots. D. Portion of stem. E. Leaf (left: adaxial side; right: abaxial side). F. Leaflet (adaxial side). G. Portion of inflorescence. H. Flower. I. Sepal (left: adaxial side; right: abaxial side). J. Stamens. K. Carpels. L. Aggregate fruits (immature). M. Achenes (immature). Photographed by Y.P. Zeng.
FIGURE. Thalictrum spiristylum (= T. atriplex) in the wild (Ninglang county in northwestern Yunnan, China). A. Habitat. B. Habit (flowering plant). C. Habit (fruiting plant). D. Roots. E. Portion of stem. F. Leaf (left: adaxial side; right: abaxial side). G. Leaflet (adaxial side). H. Portion of inflorescence. I. Flower. J. Sepals (adaxial side). K. Stamens. L. Carpels. M. Portion of infructescence. N. Aggregate fruits (immature). O. Achenes (immature). Photographed by Y.P. Zeng. in Thalictrum spiristylum (Ranunculaceae), described from northwestern Yunnan, China, is merged with T. atriplex
FIGURE. Thalictrum spiristylum (= T. atriplex) in the wild (Ninglang county in northwestern Yunnan, China). A. Habitat. B. Habit (flowering plant). C. Habit (fruiting plant). D. Roots. E. Portion of stem. F. Leaf (left: adaxial side; right: abaxial side). G. Leaflet (adaxial side). H. Portion of inflorescence. I. Flower. J. Sepals (adaxial side). K. Stamens. L. Carpels. M. Portion of infructescence. N. Aggregate fruits (immature). O. Achenes (immature). Photographed by Y.P. Zeng.
FIGURE 4. Fritillaria kordestanica. A. Habit. B–C. Floral details. D. Bud, E. Pistil and stamens. F. Outer tepal and inner tepal. G. Capsules and seeds. H in Fritillaria kordestanica (Liliaceae), a new species from western Iran
FIGURE 4. Fritillaria kordestanica. A. Habit. B–C. Floral details. D. Bud, E. Pistil and stamens. F. Outer tepal and inner tepal. G. Capsules and seeds. H. Bulbs.
FIGURE. Seedlings, seeds, embryos, anthers, and pollen in Dicorynia. A–D. Different stages of development in seedlings of D. paraensis, First eophiles unifoliolate and opposite; E–G. Seed of D. guianensis: E. External surface; F. Endosperm of the longitudinally sectioned seed, note the slightly gelatinous upper region; G. Cotyledon and embryo of longitudinally sectioned seed; H. SEM of seed's testa in D. paraensis; I. SEM of endosperm's surface in D. guianensis (notice the presence of circular perforations); J–K. SEM of the hypocotyl-radicular axis of the seed in D. guianensis and D. paraensis; L. SEM of seed's testa in D. guianensis; M–N. SEM of plumule region in embryo of D. guianensis and D. paraensis (note the developed leaf primordia); O. Apex of anther in longer stamen of D. paraensis, showing 4 sporangia and two pores covered by an apicle; P. Apex of anther in shorter stamen of D. guianensis, at least 9 sporangia; Q. Apex of anther in longer stamen of D. guianensis, 8 sporangia; R. Pollen grains in D. paraensis. A–D: Falcão, M.J. 91; E–G, I–J, L–M: Gentry 63030; H, K, N: Berry, P.E. 7460; O: Amaral, E. 618; P, Q: Unknown collector MO1576407; Scale bar. A–D: 2cm; E–G: 3mm; H–L: 1mm; M–N: 100 μm; O-Q: 200μm; R: 5 μm. in A Taxonomic Revision of the Amazonian Genus Dicorynia (Fabaceae: Dialioideae)
FIGURE. Seedlings, seeds, embryos, anthers, and pollen in Dicorynia. A–D. Different stages of development in seedlings of D. paraensis, First eophiles unifoliolate and opposite; E–G. Seed of D. guianensis: E. External surface; F. Endosperm of the longitudinally sectioned seed, note the slightly gelatinous upper region; G. Cotyledon and embryo of longitudinally sectioned seed; H. SEM of seed's testa in D. paraensis; I. SEM of endosperm's surface in D. guianensis (notice the presence of circular perforations); J–K. SEM of the hypocotyl-radicular axis of the seed in D. guianensis and D. paraensis; L. SEM of seed's testa in D. guianensis; M–N. SEM of plumule region in embryo of D. guianensis and D. paraensis (note the developed leaf primordia); O. Apex of anther in longer stamen of D. paraensis, showing 4 sporangia and two pores covered by an apicle; P. Apex of anther in shorter stamen of D. guianensis, at least 9 sporangia; Q. Apex of anther in longer stamen of D. guianensis, 8 sporangia; R. Pollen grains in D. paraensis. A–D: Falcão, M.J. 91; E–G, I–J, L–M: Gentry 63030; H, K, N: Berry, P.E. 7460; O: Amaral, E. 618; P, Q: Unknown collector MO1576407; Scale bar. A–D: 2cm; E–G: 3mm; H–L: 1mm; M–N: 100 μm; O-Q: 200μm; R: 5 μm.
FIGURE. Aristolochia rethyae—A. Flower in pre-anthesis; B. Frontal view of flower; C. Lateral view of flower; D. Longitudinal section of utricle showing the gynostemium; E. Tip of the gynostemium; F. Stamens on gynostemium; G. Cross section of gynostemium showing the stamen arrangement; H. Cross section of ovary; I. Hair on capsule. A–C photographed by Soyala Kashung; D–I photographed by Rimi Barman. in Aristolochia rethyae, a new species from Arunachal Pradesh, north-east India
FIGURE. Aristolochia rethyae—A. Flower in pre-anthesis; B. Frontal view of flower; C. Lateral view of flower; D. Longitudinal section of utricle showing the gynostemium; E. Tip of the gynostemium; F. Stamens on gynostemium; G. Cross section of gynostemium showing the stamen arrangement; H. Cross section of ovary; I. Hair on capsule. A–C photographed by Soyala Kashung; D–I photographed by Rimi Barman.
FIGURE. Chamaecrista roncadorensis. A. Fertile branch, B. Stipule, C. Leaf, D. Leaflet detail, E. Bract, F. Bracteole, G. Bud, H. Flower, I. Sepal, J. Petals, K. Stamen, L. Gynoecium, M in Taxonomic revision of Chamaecrista sect. Absus subsect. Absus (Leguminosae, Caesalpinioideae) with adjustments in the new classification
FIGURE. Chamaecrista roncadorensis. A. Fertile branch, B. Stipule, C. Leaf, D. Leaflet detail, E. Bract, F. Bracteole, G. Bud, H. Flower, I. Sepal, J. Petals, K. Stamen, L. Gynoecium, M. Fruit. Drawned by Renato Galhardo.
FIGURE. Photos showing the broader stamens in Tulipa toktogulica compared to T. talassica. A. Tulipa toktogulica. B. Tulipa talassica. Photos by Brett Wilson and Georgy Lazkov in Tulipa toktogulica (Liliaceae), a cryptic, endangered new species from the western Tien-Shan, Kyrgyzstan
FIGURE. Photos showing the broader stamens in Tulipa toktogulica compared to T. talassica. A. Tulipa toktogulica. B. Tulipa talassica. Photos by Brett Wilson and Georgy Lazkov
FIGURE 2. Amana wanyuensis. A. Habit. B1. Outer stamen. B2. Inner stamen. C1. Outer perianth segments. C2. Inner perianth segments. D1. Pistil. D2 in Amana wanyuensis (Liliaceae), a new species from the Dabieshan Mountains, Anhui Province, China
FIGURE 2. Amana wanyuensis. A. Habit. B1. Outer stamen. B2. Inner stamen. C1. Outer perianth segments. C2. Inner perianth segments. D1. Pistil. D2. Fruit. Drawn by Tao Xu.
FIGURE 5. Schizotechium paniculatum. A. Habit, B. Inflorescence, C. Flower, D. Sepals, E. Petal, F. Stamens, G. Pistil, H in Taxonomic revision of Schizotechium (Caryophyllaceae) in Nepal, including one new record
FIGURE 5. Schizotechium paniculatum. A. Habit, B. Inflorescence, C. Flower, D. Sepals, E. Petal, F. Stamens, G. Pistil, H. Capsule and valve, I. Seeds (photograph C by Y.B. Poudel; others by R. Kafle).
FIGURE 2. Schizotechium delavayi. A. Habit, B. Inflorescence, C. Flower, D. Sepals, E. Petal, F. Stamens, G. Pistil, H in Taxonomic revision of Schizotechium (Caryophyllaceae) in Nepal, including one new record
FIGURE 2. Schizotechium delavayi. A. Habit, B. Inflorescence, C. Flower, D. Sepals, E. Petal, F. Stamens, G. Pistil, H. Capsule and valve, I. Seeds (photographs by R. Kafle).
FIGURE 3. Amana yunjuensis. A. Plant. B1. Fruit. B2. Pistil,. C1. Outer stamen. C2. Inner stamen. D1. Outer perianth segments. D2 in Amana yunjuensis (Liliaceae), a new species from Jiangxi, China
FIGURE 3. Amana yunjuensis. A. Plant. B1. Fruit. B2. Pistil,. C1. Outer stamen. C2. Inner stamen. D1. Outer perianth segments. D2. Inner perianth segments. Drawn by Tao Xu.
FIGURE 3. Magnolia corquinensis. A. Flower. B. Gynoecium with stamens and carpels. C in A new species, Magnolia corquinensis, and a new record of Magnolia quetzal (Magnoliaceae) for Honduras
FIGURE 3. Magnolia corquinensis. A. Flower. B. Gynoecium with stamens and carpels. C. Detail of the veined sepal. D. Fruit with winered staminophore visible. E. Fruit with pubescent peduncle. F & G. Fruit, red shiny flattened seeds disk-like and follicle beaks curved. H. Fruit after dehiscence. I. Carpels removed to show morphological variability. Photographs A–C & E by H. Vega; D & F–I by S. Morales.
FIGURE 2. Rohdea wattii. A. Habit. B. Inflorescence close-view. C. Flower close-view. D, E. Bract adaxial & abaxial view. F. Tepal. G. Stamen. H. Pistil. I in Rediscovery and lectotypification of Rohdea wattii (C.B.Clarke) Yamashita & M.N.Tamura (Asparagaceae) from Manipur, India
FIGURE 2. Rohdea wattii. A. Habit. B. Inflorescence close-view. C. Flower close-view. D, E. Bract adaxial & abaxial view. F. Tepal. G. Stamen. H. Pistil. I. Fruits close-view.
FIGURE 2. Acranthera burmanica. A. Habit. B. Stipule and Flower branch. C. Inforescences. D. Infructescence. E. Calyx. F. Opened corolla. G. Stamen. H in Acranthera burmanica, a new species of Rubiaceae from Kachin State, Myanmar
FIGURE 2. Acranthera burmanica. A. Habit. B. Stipule and Flower branch. C. Inforescences. D. Infructescence. E. Calyx. F. Opened corolla. G. Stamen. H. Pistil. Illustration by Ling Wang based on the holotype Myanmar Exped. 313.
FIGURE 9 in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 9. Scanning electron microscopy (SEM) micrographs of seeds. Borreria heteranthera (A–C from A. J. Arruda, P. L. Viana, F. M. Santos, P. B. Mayer, T. J. Battituci & L. J. Arruda 826). A. Dorsal view. B. Ventral view. C. Detail of the reticulo-papillate testa and digitate cells. Borreria hispida (D–F from W. J. Burchell 8675). D. Dorsal view. E. Ventral view. F. Detail of the papillate testa surface and digitate cells. Borreria semiamplexicaule (G–I from A. J. Arruda, F. M. Santos, L. J. Arruda & T. J. Battituci 1095). G. Dorsal view. H. Ventral view. I. Detail of the reticulo-papillate testa. Borreria xanthophylla (J–L from J. J. de Granville, F. Crozier & C. Sarthou 15017). J. Dorsal view. K. Ventral view. L. Detail of the rugulate-papillate testa and digitate cells. Scale bar 200 μm.
FIGURE 6. Borreria semiamplexicaule E.L. Cabral. A. Habit. B. Stipular sheath. C. Terminal glomerule. D in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 6. Borreria semiamplexicaule E.L. Cabral. A. Habit. B. Stipular sheath. C. Terminal glomerule. D. Abaxial view of glomerule to display inflorescence bracts organization. E. Detail of external bract. F. Detail of internal bract. G. Flower. H. Hypanthium, style and stigma. I. Open corolla. J. Capsule. K. Internal view of mericarp to display septicidal dehiscence. L. Ventral view of seed. M. Dorsal view of seed. (A–C, G–I from Daly D. 1993, D–F from P. L. Viana, F. S. Marino, A. J. Arruda, T. B. Jorge & P. M. Burkowski 5269, L–M from P. L. Viana, F. S. Marino, A. J. Arruda, T. B. Jorge & P. M. Burkowski 5257, J–K from A. J. Arruda, F. M. Santos, L. J. Arruda & T. J. Battituci 928). Illustration by L. Simón.
FIGURE 1 in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 1. Scanning electron microscopy (SEM) micrographs of pollen grains. Borreria heteranthera (A–C from A. J. Arruda, P. L. Viana, F. M. Santos, P. B. Mayer, T. J. Battituci & L. J. Arruda 826). A. Equatorial view. B. Polar view. C. Detail of mesocolpium and a section of the colpus. Borreria hispida (D–E from R. Spruce 663; F from A. Gröger 986). D. Equatorial view. E. Polar view. F. Detail of mesocolpium and a section of the colpus. Borreria semiamplexicaule (G–H from P. M. Burkowski, A. J. Arruda, P. L. Viana, F. M. Santos & T. J. Battituci 1187; I from D. Daly, R. Callejas, M. G. da Silva, E. Taylor, C. Rosario & M. dos Santos 1993). G. Equatorial view. H. Polar view. I. Detail of apocolpium. Borreria xanthophylla (J–L from J. J. de Granville, F. Crozier & C. Sarthou 15017). J. Equatorial view. K. Polar view. L. Detail of apocolpium. Scale bar 10 μm.
FIGURE 3. Borreria heteranthera E.L. Cabral & Sobrado. A. Habit. B. Stipular sheath. C. Terminal glomerule. D in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 3. Borreria heteranthera E.L. Cabral & Sobrado. A. Habit. B. Stipular sheath. C. Terminal glomerule. D. Detail of external bract. E. Detail of internal bract. F. Flower. G. Hypanthium, style and stigma. H. Open corolla. I. Capsule. J. Internal view of mericarp to display septicidal dehiscence. K. Ventral view of seed. L. Dorsal view of seed. (A, B, F–H from P. L. Viana, L. M. Versieux, L. C. Garcia, V. T. Giorni, L. V. C. Silva & D. S. Silva 4094; C, I–L from A. J. Arruda, P. L. Viana, F. M. Santos, P. B. Mayer, T. J. Battituci & L. J. Arruda 909; D, E from A. J. Arruda, F. M. Santos, L. J. Arruda & T. J. Battituci 1099). Illustration by L. Simón.
FIGURE 2 in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 2. Scanning electron microscopy (SEM) micrographs of the pollen wall stratification, the inner nexine surface and the endoaperture morphology. A–B. Borreria hispida (from R. Spruce 663). A. Inside of pollen fragment with an endocingulum (EN) and nexine surface finely granular with broad and deep endocracks. B. Detail of a section of the endocingulum (EN) and the columellar infratectum (CI). C. Borreria semiamplexicaule (from D. Daly, R. Callejas, M. G. da Silva, E. Taylor, C. Rosario & M. dos Santos 1993). View of inner nexine surface finely granular with superficial irregular endocracks. Note the columellar infratectum (CI). D. Borreria xanthophylla (from J. J. de Granville, F. Crozier & C. Sarthou 15017). View of inner side of a portion of broken pollen showing the columellar infratectum (CI) and the finely granular inner nexine surface.
FIGURE 8. Borreria xanthophylla Bremek. A. Habit. B. Stipular sheath. C. Terminal glomerule. D in Intraspecific variation of insertion/length of stamens in homostylous flowers of a new species and three other species of Borreria: an unusual case in Rubiaceae
FIGURE 8. Borreria xanthophylla Bremek. A. Habit. B. Stipular sheath. C. Terminal glomerule. D. Detail of terminal glomerule to display fruits. E–F. Detail of external bracts. G. Detail of internal bract. H. Flower bud. I. Hypanthium, style and stigma. J. Open corolla. K. Capsule. L. Internal view of mericarp to display septicidal dehiscence. M. Ventral view of seed. N. Dorsal view of seed. (A–N from J. J. de Granville, F. Crozier & C. Sarthou 15017). Illustration by L. Simón.
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