News

01/02/2020 13:08

New paper in TAXON describes the oldest known carrot and the first evidence of Insular Woodiness

Tracing insular woodiness in giant Daucus (s.l.) fruit fossils from the Early Pleistocene of Madeira Island (Portugal)

Link: onlinelibrary.wiley.com/doi/abs/10.1002/tax.12175

Abstract: Plants on oceanic islands can evolve insular syndromes such as secondary woodiness, a generalized trend found in island floras worldwide. This phenomenon occurs through evolution in situ. It is triggered by ecological and physiological stimuli that transform herbaceous annuals into woody perennials. However, well-dated and informative fossils that could help track and frame the evolution of this syndrome are lacking. Remarkably, in Madeira Island (Portugal), there are good examples of Apiaceae that evolved secondary woodiness, like the giant neoendemic Melanoselinum (≡ Daucus). Apiaceae has a very scarce fossil record, despite being a cosmopolitan family and an economically important crop. Here we describe the oldest Daucus s.l. fossil known to date and the first fossil evidence of a plant with insular woodiness. The fossils are preserved as mummified/compressed mericarps within 1.3-millionyear- old fluvio-lacustrine sediments of the Funchal unit, Upper Volcanic complex, near Porto da Cruz. We assign them to the extant neoendemic species Melanoselinum (≡ Daucus) decipiens. The mericarp morphology shows remarkable stasis since the Calabrian stage of the Early Pleistocene. Our results demonstrate that in the Madeiran Daucinae clade, insular woodiness developed at least 1.3 million years ago, indicating a coeval or earlier immigration toMadeira Island of a Daucus sp. Our results reinforce the role of palaeobotanical research in oceanic islands, supported by stratigraphy and geochronology studies, as a key element for the understanding of plant palaeobiogeography, ecology and evolution worldwide.We expect this contribution to shed light on the evolutionary origins of carrots, and related plant groups, an important element of human food, and to better comprehend the evolution of plant insular woodiness.

Keywords island syndromes; Macaronesia; Melanoselinum; neoendemic; palaeobotany; palaeocarpology

floras worldwide. This phenomenon occurs through evolution in situ. It is triggered by ecological and physiological stimuli that transform
herbaceous annuals into woody perennials. However, well-dated and informative fossils that could help track and frame the evolution
of this syndrome are lacking. Remarkably, in Madeira Island (Portugal), there are good examples of Apiaceae that evolved
secondary woodiness, like the giant neoendemic Melanoselinum (≡ Daucus). Apiaceae has a very scarce fossil record, despite being
a cosmopolitan family and an economically important crop. Here we describe the oldest Daucus s.l. fossil known to date and the first
fossil evidence of a plant with insular woodiness. The fossils are preserved as mummified/compressed mericarps within 1.3-millionyear-
old fluvio-lacustrine sediments of the Funchal unit, Upper Volcanic complex, near Porto da Cruz. We assign them to the extant
neoendemic species Melanoselinum (≡ Daucus) decipiens. The mericarp morphology shows remarkable stasis since the Calabrian stage
of the Early Pleistocene. Our results demonstrate that in the Madeiran Daucinae clade, insular woodiness developed at least 1.3 million
years ago, indicating a coeval or earlier immigration toMadeira Island of a Daucus sp. Our results reinforce the role of palaeobotanical
research in oceanic islands, supported by stratigraphy and geochronology studies, as a key element for the understanding of plant
palaeobiogeography, ecology and evolution worldwide.We expect this contribution to shed light on the evolutionary origins of carrots,
and related plant groups, an important element of human food, and to better comprehend the evolution of plant insular woodiness.
Keywords island syndromes; Macaronesia; Melanoselinum; neoendemic; palaeobotany; palaeocarpology

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17/11/2019 17:37

New Paper dealing with charcoalified wood from Faial Island

 

New paper is out: Góis-Marques, C.A., Rubiales, J., de Nascimento, L., Menezes de Sequeira, M., Fernández-Palacios, J.M., Madeira, J., 2020. Oceanic Island forests buried by Holocene (Meghalayan) explosive eruptions: palaeobiodiversity in pre-anthropic volcanic charcoal from Faial Island (Azores, Portugal) and its palaeoecological implications Review of Palaeobotany and Palynology 273, doi: https://doi.org/10.1016/j.revpalbo.2019.104116

Free to read through the following link: https://authors.elsevier.com/a/1a3Q37uTvVLBo

 

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20/09/2019 14:46

New paper: Nomenclature and Typification of Names in the Ibero–North African Andryala arenaria (Asteraceae) and Taxonomic Implications

A new paper was published by our group, by Zita Ferreira, Inés Álvarez and Miguel Menezes de Sequeira, available here: novon.mobot.org/index.php/novon/article/view/297

Title: Nomenclature and Typification of Names in the Ibero–North African Andryala arenaria (Asteraceae) and Taxonomic Implications (DOI: https://doi.org/10.3417/2019297)

Abstract: A taxonomic and nomenclatural revision of the genus Andryala L. (Asteraceae) revealed that A. arenaria (DC.) Boiss. & Reut. var. ficalhoana (Daveau) Cout. had never been typified. Based on an analysis of the protologue and original material, a specimen at LY is designated here as the lectotype. The relevance of this typification resides in the fact that the recently described A. cintrana S. Talavera & M. Talavera is here considered a heterotypic synonym of A. arenaria var. ficalhoana. In addition, A. cossyrensis Guss. var. oligadena Maire & Weiller from Libya is here synonymized with A. arenaria var. pinnatifida Lange ex Willk., leading to the extension of the known distribution area of A. arenaria.

Keywords: Andryala, Asteraceae, holotype, lectotypification, Mediterranean

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27/08/2019 12:08

New paper: The loss of a unique palaeobotanical site in Terceira Island within the Azores UNESCO Global Geopark (Portugal)

Available here: link.springer.com/article/10.1007/s12371-019-00401-1 or rdcu.be/bPbkl

Reference: Góis-Marques, C.A., Elias, R.B., Steinbauer, M.J., de Nascimento, L., Fernández-Palacios, J.M., Menezes de Sequeira, M. & Madeira, J. 2019. The loss of a unique palaeobotanical site in Terceira Island within the Azores UNESCO global geopark (Portugal). Geoheritage (IN PRESS): 1-9

Abstract: Terceira Island (Azores archipelago, central Atlantic Ocean) presents a unique but poorly studied Quaternary palaeobotanical record. Among the sites referenced in the literature, Fanal Bay, within Angra do Heroísmo city, is known at least since the 1940s. Field prospection in the summer of 2016 revealed two layers of leaf fossils with an unexpected fossil abundance. The preliminary results showed that these represented autochthonous or para-autochthonous (T0) fossil assemblages, preserved by the emplacement of ash or lapilli layers by volcanic events, in a leaf litter of a laurel palaeoforest. Unfortunately, in 2018, the site was destroyed due to development works to consolidate and requalify the Fanal Bay cliff from further sea erosion. This prevented a detailed study and the ex situ preservation of an important palaeontological site, within the Azores UNESCO Global Geopark. With this work, we hope to call the attention to the need of implementing geoconservation strategies in order to prevent the destruction of important geoheritage within the Azores Islands and to transpose this warning to other geoconservationists in oceanic islands worldwide.

record. Among the sites referenced in the literature, Fanal Bay, within Angra do Heroísmo city, is known at least since the 1940s.
Field prospection in the summer of 2016 revealed two layers of leaf fossils with an unexpected fossil abundance. The preliminary
results showed that these represented autochthonous or para-autochthonous (T0) fossil assemblages, preserved by the emplacement
of ash or lapilli layers by volcanic events, in a leaf litter of a laurel palaeoforest. Unfortunately, in 2018, the site was
destroyed due to development works to consolidate and requalify the Fanal Bay cliff from further sea erosion. This prevented a
detailed study and the ex situ preservation of an important palaeontological site, within the Azores UNESCO Global Geopark.
With this work, we hope to call the attention to the need of implementing geoconservation strategies in order to prevent the
destruction of important geoheritage within the Azores Islands and to transpose this warning to other geoconservationists in
oceanic islands worldwide.

Read more

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21/02/2019 12:51

New Paper published: Eurya stigmosa (Theaceae), a new and extinct record for the Calabrian stage of Madeira Island (Portugal): 40Ar/39Ar dating, palaeoecological and oceanic island palaeobiogeographical implications.

A new paper describing a new and extinct Theaceae for Madeira Island was recently published in the journal Quaternary Science Review. You can check it out in: www.sciencedirect.com/science/article/pii/S0277379118309284

This discovery was also reported portuguese press:

Publico:www.publico.pt/2019/01/28/ciencia/noticia/descoberta-ilha-madeira-arvore-ja-extinta-familia-cha-1859768

Wilder: www.wilder.pt/historias/descobertos-na-ilha-da-madeira-fosseis-de-arvore-ja-extint

 

 

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18/08/2018 09:22

FloraMac2018 congress, Funchal, Madeira Island (Portugal)

Please visit us at: www.uma.pt/floramac2018 

Late Registrations still available.

See you soon in Funchal!

 

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02/01/2018 21:55

Congress FloraMac 2018 | Funchal | September 12-15

Official website comming soon! First circular:

https://www.facebook.com/FloraMac2018/ or twitter.com/FloraMac2018

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15/01/2016 11:42

New Doctors in Biological Sciences

We are proud to announce that we have two new doctors in our Group:

Zita Ferreira defended successfully her PhD. thesis entitled: “Biosystematics of the genus Andryala L. (Asteraceae)”.  

Zita Ferreira thesis committee, from left to right: Miguel Sequeira, Carlos Neto, Jorge Capelo, Enrique Rico Hernández, Judith Fehrer, Zita Ferreira, Inés Férnandez, Manuela Gouveia e José Jesus.

 

Aida Pupo Correia also defended successfully her PhD. thesis entitled: “Evolution of the landscape of Madeira Island, long-term vegetation dynamics”

Aida Pupo Correia thesis committee, from left to right: Jorge Capelo, Carlos Neto, José María Fernández-Palacios, Manuela Gouveia, Miguel Sequeira, Aida Pupo Correia, Thomas Dellinger, José Aranha. 

Congratulations to our new Doctors!

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02/10/2014 11:42

XVII Congress of European Mycologists

Our Group is co-organizing the XVII Congress of European Mycologists, that will be held in Madeira Island in September 2015. Registration opening soon at www.xviicem.org. 

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29/07/2014 13:36

New Paper: Andryala perezii (Asteraceae), a New Species from the Canary Islands

Recently a new species of Andryala was described by our group. The study was published in the journal Novon: A Journal for Botanical Nomenclature, entitled "Andryala perezii (Asteraceae), a New Species from the Canary Islands". The comparison of Madeira and Canaries Island plants allowed distinguishing the new species. The paper is available here: www.bioone.org/doi/abs/10.3417/2010119?journalCode=novo

 

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  Welcome to the Madeira Botanical Group !

We are a group of people that share the same scientific interest on the Madeira flora. Our main objectives are to study the flora under different perspectives and share our results with the general public.


Because it is sometimes difficult to find our works and publications, we decided to make them available. You can have access to some of them through the link to the journal webpage, but you can always ask directly for a pdf. Please use our contacts to do so!


We aim to describe past and present plant diversity in the Madeira archipelago, and also to predict a troublesome future where new invasions (almost 5 taxa become naturalised every year) or the massive expansion of others (such as Acacia mearnsii introduced as a forestry tree) are already terrible threats to native vegetation. Because conservation is one of our concerns we will account for other and possible menaces as the introduction of foreign genotypes from other territories and the genetic shuffle caused by careless reintroductions.


Here you can find a brief description of our projects, but you can always ask for more details and contributions are welcome.


At last but not least, this webpage contains the Checklist of Vascular Plants of the Madeira archipelago. Although largely based on a previous publication by the same authors, amendments and additions make it the most actual checklist of our Flora. You can search the database by different fields or obtain a pdf. And, of course, we will be pleased to receive your comments.

 

PhD Miguel Menezes de Sequeira


Contact

Grupo de Botânica da Madeira


News

01/02/2020 13:08

New paper in TAXON describes the oldest known carrot and the first evidence of Insular Woodiness

Tracing insular woodiness in giant Daucus (s.l.) fruit fossils from the Early Pleistocene of Madeira Island (Portugal) Link: onlinelibrary.wiley.com/doi/abs/10.1002/tax.12175 Abstract: Plants on oceanic islands can evolve insular syndromes such as secondary woodiness, a generalized trend...

Read more

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17/11/2019 17:37

New Paper dealing with charcoalified wood from Faial Island

  New paper is out: Góis-Marques, C.A., Rubiales, J., de Nascimento, L., Menezes de Sequeira, M., Fernández-Palacios, J.M., Madeira, J., 2020. Oceanic Island forests buried by Holocene (Meghalayan) explosive eruptions: palaeobiodiversity in pre-anthropic volcanic charcoal from Faial...

Read more

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20/09/2019 14:46

New paper: Nomenclature and Typification of Names in the Ibero–North African Andryala arenaria (Asteraceae) and Taxonomic Implications

A new paper was published by our group, by Zita Ferreira, Inés Álvarez and Miguel Menezes de Sequeira, available here: novon.mobot.org/index.php/novon/article/view/297 Title: Nomenclature and Typification of Names in the Ibero–North African Andryala arenaria (Asteraceae) and Taxonomic...

Read more

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27/08/2019 12:08

New paper: The loss of a unique palaeobotanical site in Terceira Island within the Azores UNESCO Global Geopark (Portugal)

Available here: link.springer.com/article/10.1007/s12371-019-00401-1 or rdcu.be/bPbkl Reference: Góis-Marques, C.A., Elias, R.B., Steinbauer, M.J., de Nascimento, L., Fernández-Palacios, J.M., Menezes de Sequeira, M. & Madeira, J. 2019. The loss of a unique...

Read more

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21/02/2019 12:51

New Paper published: Eurya stigmosa (Theaceae), a new and extinct record for the Calabrian stage of Madeira Island (Portugal): 40Ar/39Ar dating, palaeoecological and oceanic island palaeobiogeographical implications.

A new paper describing a new and extinct Theaceae for Madeira Island was recently published in the journal Quaternary Science Review. You can check it out in: www.sciencedirect.com/science/article/pii/S0277379118309284 This discovery was also reported portuguese...

Read more

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18/08/2018 09:22

FloraMac2018 congress, Funchal, Madeira Island (Portugal)

Please visit us at: www.uma.pt/floramac2018  Late Registrations still available. See you soon in Funchal!  

Read more

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02/01/2018 21:55

Congress FloraMac 2018 | Funchal | September 12-15

Official website comming soon! First circular: https://www.facebook.com/FloraMac2018/ or twitter.com/FloraMac2018

Read more

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15/01/2016 11:42

New Doctors in Biological Sciences

We are proud to announce that we have two new doctors in our Group: Zita Ferreira defended successfully her PhD. thesis entitled: “Biosystematics of the genus Andryala L. (Asteraceae)”.   Zita Ferreira thesis committee, from left to right: Miguel Sequeira, Carlos Neto, Jorge Capelo, Enrique...

Read more

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02/10/2014 11:42

XVII Congress of European Mycologists

Our Group is co-organizing the XVII Congress of European Mycologists, that will be held in Madeira Island in September 2015. Registration opening soon at www.xviicem.org. 

Read more

—————

29/07/2014 13:36

New Paper: Andryala perezii (Asteraceae), a New Species from the Canary Islands

Recently a new species of Andryala was described by our group. The study was published in the journal Novon: A Journal for Botanical Nomenclature, entitled "Andryala perezii (Asteraceae), a New Species from the Canary Islands". The comparison of Madeira and Canaries Island plants allowed...

Read more

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Checklist

16/07/2013 14:39

Madeira archipelago

www4.uma.pt/gbm/checklist/lista_flora.php

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Books

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