Abstract:A new species, Impatiens katjae Nob. Tanaka & J. J. Verm. (Balsaminaceae), from Mandalay Region, central Myanmar, is described and illustrated. This species is similar to I. oblongata Ruchis. & Niet in floral morphology, but differs in having distinctly smaller flowers, 2-flowered axillary inflorescences, much paler pinkish-white flowers, two lateral sepals, and a spurless lower sepal. This new species is assigned to Impatiens L. subg. Impatiens sect. Uniflorae Hook. f. & Thomson.
“…Impatiens Linnaeus is the largest genus in the Balsaminaceae family, containing approximately 1000 species with new species discovered constantly [1][2][3]. It is known for its high variability of traits [4][5][6][7][8], but also widespread distributions [9], with annual or perennial cycles of growing [10,11].…”
Pollination biology in the widespread species Impatiens capensis Meerb. has only been studied in America, specifically in zones of the U.S.A. and Canada. In this study, we investigated the pollination biology of I. capensis using an integrative identification approach using morphological and molecular tools in four populations of Northwest Poland. We also determined and compared the functional characteristics of the pollinators of the introduced species from the study sites and the native ones reported, for the latter collecting information from bibliographic sources. Visitors were identified using standard morphological keys, including identifying and classifying insect mouthparts. Molecular identification was carried out using mitochondrial DNA’s cytochrome oxidase subunit I (COI). We morphologically identified 20 species of visitors constituted by 17 pollinators and three nectar robbers. DNA barcoding of 59 individuals proved the identification of 18 species (also 18 BINs). The frequency of pollinator species was primarily made up of representatives of both Hymenoptera (75%) and Diptera (21%). The morphological traits, such as the chewing and sucking mouthparts, small and big body height, and robber and pollinator behavior explained mainly the native and introduced visitors’ arrangements that allow pollination success. However, to understand the process comprehensively, further investigation of other causalities in pollination success and understanding the diversity of pollinators in outer native ranges are necessary.
“…Impatiens Linnaeus is the largest genus in the Balsaminaceae family, containing approximately 1000 species with new species discovered constantly [1][2][3]. It is known for its high variability of traits [4][5][6][7][8], but also widespread distributions [9], with annual or perennial cycles of growing [10,11].…”
Pollination biology in the widespread species Impatiens capensis Meerb. has only been studied in America, specifically in zones of the U.S.A. and Canada. In this study, we investigated the pollination biology of I. capensis using an integrative identification approach using morphological and molecular tools in four populations of Northwest Poland. We also determined and compared the functional characteristics of the pollinators of the introduced species from the study sites and the native ones reported, for the latter collecting information from bibliographic sources. Visitors were identified using standard morphological keys, including identifying and classifying insect mouthparts. Molecular identification was carried out using mitochondrial DNA’s cytochrome oxidase subunit I (COI). We morphologically identified 20 species of visitors constituted by 17 pollinators and three nectar robbers. DNA barcoding of 59 individuals proved the identification of 18 species (also 18 BINs). The frequency of pollinator species was primarily made up of representatives of both Hymenoptera (75%) and Diptera (21%). The morphological traits, such as the chewing and sucking mouthparts, small and big body height, and robber and pollinator behavior explained mainly the native and introduced visitors’ arrangements that allow pollination success. However, to understand the process comprehensively, further investigation of other causalities in pollination success and understanding the diversity of pollinators in outer native ranges are necessary.
“…A total of 69 native Impatiens species have been documented in Myanmar (Kress et al 2003;Tanaka et al 2015Tanaka et al , 2018Tanaka et al , 2022Ruchisansakun et al 2017Ruchisansakun et al , 2018aRuchisansakun et al , 2018bAkiyama et al 2018;Ding et al 2019;Dakaw Phong San and Ruchisansakun 2022;Myo Min Latt et al 2023). Amongst these, eight of them belong to Impatiens sect.…”
“…A total of 69 native Impatiens species have been documented in Myanmar ( Kress et al 2003 ; Tanaka et al 2015 , 2018 , 2022 ; Ruchisansakun et al 2017 , 2018a , 2018b ; Akiyama et al 2018 ; Ding et al 2019 ; Dakaw Phong San and Ruchisansakun 2022 ; Myo Min Latt et al 2023 ). Amongst these, eight of them belong to Impatiens sect.…”
Impatiens karenensis (I. sect. Semeiocardium) from Kayin State, Myanmar is described and illustrated here. It is most similar to I. micromeris, but differs in having lower petals with outer margins strongly undulate in the lower half (vs. lower petals entire), apex of upper petals acute to obtuse (vs. apex rounded), short stout spur, ± as long as the depth of lower sepal, ca. 2.5 mm long (vs. long attenuate spur, twice as long as the depth of lower sepal, ca. 5 mm long). Its conservation status is also assessed as Critically Endangered.
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