Bibliografías temáticas / Stamens inserted

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Literatura académica sobre el tema "Stamens inserted"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 10 de febrero de 2022

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Artículos de revistas sobre el tema "Stamens inserted"

1

Decraene, L. P. Ronse y E. F. Smets. "An updated interpretation of the androecium of the Fumariaceae". Canadian Journal of Botany 70, n.º 9 (1 de septiembre de 1992): 1765–76. http://dx.doi.org/10.1139/b92-219.

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A study of the floral development of Dicentra formosa, Corydalis lutea, and Hypecoum procumbens was carried out to better understand the nature of the androecium in Fumariaceae. Sepals emerge successively in a median position and are followed by two alternating pairs of petals. Four stamen primordia are formed in a diagonal position. They are promptly followed by two lateral, slightly externally inserted primordia. In Dicentra and Corydalis the stamens arise on two crescent-shaped protuberances. In Hypecoum, four diagonal androecial primordia fuse into two median staminal complexes. The gynoecium emerges as a girdling primordium with four growth centers. Different interpretations of the androecium are discussed. It is demonstrated that the androecium in the Fumariaceae consists basically of two whorls: an outer whorl of four alternipetalous stamens and an inner whorl of two lateral stamens superposed to the outer petals. The monothecal nature of the alternipetalous stamens and the fusion of the stamens in two triplets is probably caused by a spatial median compression of the flower bud. The androecium of Hypecoum is the result of interprimordial growth between the pairs of monothecal stamens, and the androecium of Pteridophyllum arises through the loss of the two lateral stamens superposed to the outer petals. Key words: Fumariaceae, floral development, androecium, stamen whorls.
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2

Boubes, Chafika y Denis Barabé. "Développement de l'inflorescence et des fleurs du Philodendron acutatum Schott (Araceae)". Canadian Journal of Botany 74, n.º 6 (1 de junio de 1996): 909–18. http://dx.doi.org/10.1139/b96-113.

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The inflorescence of Philodendron acutatum possesses female flowers in the inferior part and male flowers in the distal part. The male flowers possess from three to six stamens, rarely seven to nine. The female flowers possess a multilocular ovary comprising from 8 to 12 locules. Each locule corresponds to a closed carpel. The stylar canals remain separate up to the upper part of the gynoecium. In this inflorescence, one observes an intermediary zone comprising bisexual flowers with fused or free carpels and stamens, inserted in the same whorl. Generally, the portion of the bisexual flower facing the male zone is formed by stamens, and that facing the female zone is formed by an incomplete gynoecium comprising few carpels. The separation between the two parts of a bisexual flower is generally clear; however, in rare cases, a stamen appears between two carpels, or a carpel between two stamens. Nevertheless, in all cases, the different flower parts are inserted on the same whorl. The presence of bisexual flowers corresponds probably to a morphogenetic gradient at the level of the overall inflorescence. The genes controlling the expression of flower sex are probably governed by chemical processes that act at the level of the overall inflorescence. Keywords: morphogenesis, gradient, flower, development, inflorescence.
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3

VISLOBOKOV, NIKOLAY A., ANDREY N. KUZNETSOV, SVETLANA P. KUZNETSOVA, MIKHAIL S. ROMANOV y MAXIM S. NURALIEV. "Aspidistra minor (Asparagaceae, Nolinoideae), a tiny new species from Vietnam". Phytotaxa 402, n.º 1 (18 de abril de 2019): 63. http://dx.doi.org/10.11646/phytotaxa.402.1.9.

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Aspidistra minor is described and illustrated as a new species from southern Vietnam (Gia Lai province, Kon Chu Rang Nature Reserve). The new species possesses very small ovate to elliptic leaf blades and very small flowers with stamens inserted at the base of the perigone. In flower structure, the new species resembles A. leucographa and A. elatior but strongly differs in shape of leaf blades and position of stamens.
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4

Pringle, James S. "Gentianella montesinosii (Gentianaceae, Gentianeae, Swertiinae), a New Species from Peru". Novon, A Journal for Botanical Nomenclature 27, n.º 4 (8 de noviembre de 2019): 248–52. http://dx.doi.org/10.3417/2019357.

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The new species Gentianella montesinosii J. S. Pringle is described from Huánuco Department, Peru. It resembles G. pyrostelium J. S. Pringle, from which it differs in its much greater plant size, less deeply lobed corollas, and stamens inserted lower on the corolla tube.
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5

WEI, NENG, DANIEL ODHIAMBO MIYAWA, MELLY KIMUTAI DAVID, VERONICAH MUTELE NGUMBAU, ZHI-XIANG ZHONG, GEOFFREY MWACHALA, GUANG-WAN HU y QING-FENG WANG. "Zehneria longiflora (Cucurbitaceae), a new species from Kenya". Phytotaxa 324, n.º 1 (6 de octubre de 2017): 89. http://dx.doi.org/10.11646/phytotaxa.324.1.7.

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Zehneria longiflora, a new species of Cucurbitaceae from Nandi County, Kenya, is described and illustrated here. It is most similar to Z. oligosperma, but differs mainly by its longer receptacle-tube, stamens that are inserted at the middle of the receptacle-tube and with longer filaments, as well as characters of the male and female inflorescence.
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6

Basinger, J. F., D. R. Greenwood, P. G. Wilson y D. C. Christophel. "Fossil flowers and fruits of capsular Myrtaceae from the Eocene of South Australia." Canadian Journal of Botany 85, n.º 2 (enero de 2007): 204–15. http://dx.doi.org/10.1139/b07-001.

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Flowers and fruits of the Myrtaceae are described from the Middle Eocene Golden Grove locality of South Australia, and the taxon is here named Tristaniandra alleyi gen. et sp.nov. Flowers are pentamerous and perigynous, with sepals, petals, and stamens inserted on the rim of a hypanthium. Filaments are basally fused to form antepetalous stamen bundles, each consisting of about 6–8 stamens. The tricarpellate ovary becomes exserted on maturation, forming a partly exserted, dry fruit with loculicidal dehiscence. These features are typical of capsular-fruited members of the Myrtaceae; in particular, taxa in the tribe Kanieae. While the characteristics of the fossils are not found within any one extant genus, the fossils show some similarity to living species of Tristaniopsis , although the staminal bundles are more comparable to those found in Tristania , which is only distantly related and has a rather different fruit. Capsular-fruited Myrtaceae are now primarily confined to Australasia, and appear to have had a Gondwanic origin in the latest Cretaceous to Paleogene. Nevertheless, as fossil flowers and fruits are rare, and infrafamilial identification of pollen and leaves is difficult, the Paleogene record of capsular Myrtaceae is largely equivocal. The Golden Grove fossils establish a record of the tribe Kanieae within Eocene coastal rainforest vegetation at paleolatitude 55°–58°S during a time of global warmth.
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7

DENG, CHUANG-FA, LEI WU, XUN-LIN YU, YONG-FU XU y JIA-XIANG LI. "Aspidistra yuelushanensis (Asparagaceae), a new species from Hunan, China". Phytotaxa 482, n.º 2 (29 de enero de 2021): 183–90. http://dx.doi.org/10.11646/phytotaxa.482.2.6.

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Aspidistra yuelushanensis, a new species of Asparagaceae is described and illustrated from typical hilly red soil region in Hunan Province, central southern China. This novelty is similar to A. chishuiensis by sharing purplish-red and campanulate perianth, but differs from the latter by its stamens inserted at the base (vs. inserted at the middle) of perianth tube, filaments spreading horizontally or slightly upward and enlarged (vs. sessile), perianth lobes slightly outcurved (vs. slightly incurved). It also resembles A. tenuifolia and A. pingfaensis, but differs from the latter two in its leave blade elliptic-lanceolate (vs. narrowly long to ribbon-shaped and linear, respectively), stigma 5 (vs. 7–8 and 8–9, respectively) mm in diameter. A key to the species of Aspidistra in Hunan province is provided.
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8

GARG, ARTI, RAJEEV KUMAR SINGH y BHUPENDRA SINGH KHOLIA. "Pedicularis raghvendrae (Orobanchaceae), a new species from Sikkim Himalaya, India". Phytotaxa 452, n.º 1 (8 de julio de 2020): 110–15. http://dx.doi.org/10.11646/phytotaxa.452.1.12.

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Pedicularis raghvendrae, is described as a new species from the Sikkim Himalaya, India. The new species belongs to Pedicularis series Furfurae and is closely related to P. pantlingii, but differs by its shorter size, smaller leaves, smaller, villous, 4-toothed calyx, shorter calyx teeth, corolla white with light pinkish tinge, galea deflexed opposite to the midlobe of labium, midlobe of labium broadly elliptic-ovate, apex acute-obtuse, base distinctly stipitate, stamens inserted at base of corolla tube and filaments longer, all glabrous.
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9

Xin, Guiliang, Xilu Ni y Wenzhe Liu. "Anatomy and development of gynoecium in Tapiscia sinensis Oliv. and its implications for the origin of carpels". Bangladesh Journal of Botany 48, n.º 4 (31 de diciembre de 2019): 933–41. http://dx.doi.org/10.3329/bjb.v48i4.49031.

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Tapiscia sinensis Oliv. (Tapisciaceae) is a rare tree endemic in China. Characteristic of its androdioecy is the coexistence of male and hermaphroditic flowers. Its bisexual flower bears five stamens surrounding the gynoecium, which is composed of a terminal style and an ovary at the base. The style has a bifid stigmata, which is hollow and longer than stamens. The ovary is syncarpous, unilocular, formed by two fused carpels, with a basal or subbasal placenta. Ovule is bitegmic, anatropous, borne on the placenta and supplied by an amphicribral vascular bundle arising directly from receptacle. The carpel wall is supplied by a collateral vascular bundle. The ovule’s position changes from initially inserted on the ovary base to later attached to the middle of the ovary wall due to unequal growth of the embryo sac. Based on the present observation and others, the implications of vascular system in Tapiscia for the evolution of carpel are discussed.
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10

PAN, BO, YING QIN y CHUN-RUI LIN. "Aspidistra luochengensis (Asparagaceae), a new species from Guangxi, China". Phytotaxa 387, n.º 2 (8 de enero de 2019): 172–76. http://dx.doi.org/10.11646/phytotaxa.387.2.10.

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Aspidistra louchengensis (Asparagaceae) is described and illustrated from limestone areas in northern Guangxi Zhuang Autonomous Region, China. It is similar to A. obconica C.R.Lin & Yan Liu with the perianth obconical campanulate, stamens inserted at upper third of perianth tube, but it can be clearly distinguished by leaf blade narrower and longer, perigone lobes longer (6–8 mm), adaxial densely papillose and scabrous, apex acuminate and outcurved, and stigma upper surface slightly concave. This new species is only known from Luocheng Mulao Autonomous County in Guangxi, China.
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