Evolution of inflorescence architecture in Nymphoides (Menyanthaceae)

Tippery, Nicholas P.; Les, Donald H.; Jones, Cynthia S.

doi:10.1016/j.aquabot.2012.01.001

Cited by 11 publications

(4 citation statements)

References 17 publications

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“…Herbarium voucher specimens were collected and submitted to the KwaZulu-Natal Herbarium and were identified as N. peltata by the author. This was done through comparing the voucher specimens to the existing collections of this genus and to descriptions in the relevant literature (Darbyshire & Francis 2008;Mackinder 1990;Tippery, Les & Jones 2012;Whitehouse 1996). The Compton (NBG), KwaZulu-Natal (NH), Bews (NU) and the National Herbarium (PRE) did not have any specimens of N. peltata.…”

Section: Methodsmentioning

confidence: 99%

First confirmed record of Nymphoides peltata (S.G.Gmel.) Kuntze (Menyanthaceae) naturalised in southern Africa

Cheek

2018

Bothalia ABC

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Background: Nymphoides peltata is a hydrophyte with a nymphaeid growth form and is known to be an invader of aquatic ecosystems.Objectives: To document the presence of N. peltata outside of cultivation in southern Africa.Method: Herbarium vouchers of newly collected material were compared against the vouchers of indigenous members of the genus and with the relevant botanical literature to confirm the identity of the species.Results: Nymphoides peltata is confirmed as occurring outside of cultivation for the first time in South Africa. The species was recorded from two dams adjacent to the Umgeni River in the KwaZulu-Natal midlands.Conclusion: This is the first record of a non-indigenous species of the Menyanthaceae family for South Africa outside of cultivation and adds to our knowledge of the alien aquatic flora of the region. Nymphoides peltata is listed as a Category 1a species, which means that it should be eradicated.

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Section: Methodsmentioning

confidence: 99%

First confirmed record of Nymphoides peltata (S.G.Gmel.) Kuntze (Menyanthaceae) naturalised in southern Africa

Cheek

2018

Bothalia ABC

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“…Asexual reproduction occurs vegetatively through stolons that extend at the water surface to produce a series of floriferous nodes. Each node consists of paired floating leaves and an umbellate cluster of flowers (Tippery et al 2012). Subsequent rooting from the floriferous nodes and fragmentation of the stolon stems are effective for establishing new clonal individuals via localized reproduction (Raynal 1974).…”

Section: Introductionmentioning

confidence: 99%

Assessing the genetic diversity of Nymphoides peltata in the native and adventive range using microsatellite markers

Tippery,

Harms,

Purcell

et al. 2024

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Nymphoides peltata (yellow floatingheart), native to Eurasia, is an invasive plant in the USA, where it grows in relatively isolated but widespread populations. The species is capable of sexual reproduction by seed and asexual reproduction through fragmentation. Although N. peltata is recognized as a noxious weed, little is known about its geographic region of origin or its dispersal mechanisms and relative amount of genetic variation in its adventive range. We conducted a genetic analysis of N. peltata by studying 68 localities across the native range and 47 localities in the adventive range, using microsatellite markers to determine genetic variability within and among populations, and to infer regions in the native range from which invasive plants originated. A large number of sites in the USA were genetically identical to one another, and there were two predominant multilocus allele phenotypes that were distributed in the northern and southern latitudes, respectively. Additional USA sites were similar to one of the predominant genetic profiles, with greater genetic diversity in southern populations. The genetically identical sites are consistent with asexual spread, potentially via anthropogenic mechanisms. Plants across the USA range were observed to produce viable seeds, and some genetic variation could be explained by sexual reproduction. All USA plants were more similar to plants in Europe than they were to plants in Asia, indicating that the plants likely were introduced originally from Europe. The existence of two genetic clusters and their similarity to plants in different parts of Europe constitute evidence for at least two N. peltata introductions into the USA.

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“…Morphologically, all African Nymphoides species have the ‘condensed’ inflorescence type, characterized by umbels of pedicellate flowers that associate closely with floating leaves (Tippery and Les , Tippery et al ). Flowers have yellow or white petals that may be glabrous or ornamented with sparse or dense hairs (Raynal , b).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetics and seed morphology of AfricanNymphoides(Menyanthaceae)

Tippery

Sokolik

2020

Nordic Journal of Botany

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We evaluated the boundaries among Nymphoides (Menyanthaceae) species in Africa, a region where the genus has received relatively little attention. We gathered morphological data from seeds using light and scanning electron microscopy, and we conducted molecular phylogenetic analyses using nuclear sequence data from the internal transcribed spacer (ITS) region. Morphological and molecular features distinguished six species and affirmed their respective geographic ranges. No African specimens were attributable to Nymphoides indica, even though this paleotropical species previously had been understood to grow in Africa. We establish the new combination Nymphoides senegalensis (G. Don) Tippery, based on an established African basionym, to accommodate the specimens formerly identified as N. indica. Phylogenetic analyses resolved two distinct clades containing African species. The majority of African species are closely related to neotropical species, with which they share similar petal ornamentation. The morphologically distinct N. ezannoi shares floral and phylogenetic similarity with species from North America and Asia. Results presented here support prior hypotheses that allopolyploid species in the Americas may have originated from one or more parental lineages in Africa. Seed morphological characters remain some of the most reliable features for identifying species, particularly for herbarium specimens lacking observable floral characters.

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Evolution of inflorescence architecture in Nymphoides (Menyanthaceae)

Cited by 11 publications

References 17 publications

First confirmed record of Nymphoides peltata (S.G.Gmel.) Kuntze (Menyanthaceae) naturalised in southern Africa

First confirmed record of Nymphoides peltata (S.G.Gmel.) Kuntze (Menyanthaceae) naturalised in southern Africa

Assessing the genetic diversity of Nymphoides peltata in the native and adventive range using microsatellite markers

Phylogenetics and seed morphology of AfricanNymphoides(Menyanthaceae)

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