Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins
Background – Cyclodium is a neotropical fern genus comprising about ten species. Most species are found in northern South America, and the foothills of the Guiana Shield is an important region for species diversification. Our phylogenetic and taxonomic studies of the genus demonstrated the need to d...
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| Format: | Article |
| Language: | English |
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Meise Botanic Garden
2019-11-01
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| Series: | Plant Ecology and Evolution |
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| Online Access: | https://plecevo.eu/article/24669/download/pdf/ |
| _version_ | 1797421878905667584 |
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| author | Amabily Bohn Fernando Matos Paulo Labiak |
| author_facet | Amabily Bohn Fernando Matos Paulo Labiak |
| author_sort | Amabily Bohn |
| collection | DOAJ |
| description | Background – Cyclodium is a neotropical fern genus comprising about ten species. Most species are found in northern South America, and the foothills of the Guiana Shield is an important region for species diversification. Our phylogenetic and taxonomic studies of the genus demonstrated the need to describe a new species and to recognize a variety at species level.Methods – This study is based on herbarium specimens from CAY, HUA, INPA, MBM, NY, P, RB, UC, UFP, UPCB, and US. Morphological characters were analyzed using standard procedures. The indumentum and spores of the new species were studied using a scanning electron microscope. Species delimitation is proposed based on our preliminary phylogenetic studies, as well as on morphology and geographical distribution.Key results – Cyclodium alansmithii Bohn & Labiak is recognized as a new species, described, and illustrated. The most similar species is Cyclodium inerme (Fée) A.R.Sm., from which it differs by ovate-lanceolate and bicolored scales, reduced fronds, truncate pinna bases, and non-ciliate indusia. Cyclodium alansmithii is currently assessed as Endangered (EN) using IUCN criteria, but more fieldwork and herbarium studies are necessary to establish a more accurate conservation assessment. Cyclodium trianae (Mett.) A.R.Sm. var. chocoense A.R.Sm. is here elevated to species rank. A key to species of Cyclodium with free veins is provided. |
| first_indexed | 2024-03-09T07:23:45Z |
| format | Article |
| id | doaj.art-3967a43530564161ab77f87bb71e23c4 |
| institution | Directory Open Access Journal |
| issn | 2032-3921 |
| language | English |
| last_indexed | 2024-03-09T07:23:45Z |
| publishDate | 2019-11-01 |
| publisher | Meise Botanic Garden |
| record_format | Article |
| series | Plant Ecology and Evolution |
| spelling | doaj.art-3967a43530564161ab77f87bb71e23c42023-12-03T07:09:47ZengMeise Botanic GardenPlant Ecology and Evolution2032-39212019-11-01152352153010.5091/plecevo.2019.154524669Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veinsAmabily BohnFernando Matos0Paulo Labiak1Universidade Federal do Paraná, Dept. de Botânica. Caixa Postal 19031, 81531-980, Curitiba, ParanáUniversidade Federal do Paraná, Dept. de Botânica. Caixa Postal 19031, 81531-980, Curitiba, ParanáBackground – Cyclodium is a neotropical fern genus comprising about ten species. Most species are found in northern South America, and the foothills of the Guiana Shield is an important region for species diversification. Our phylogenetic and taxonomic studies of the genus demonstrated the need to describe a new species and to recognize a variety at species level.Methods – This study is based on herbarium specimens from CAY, HUA, INPA, MBM, NY, P, RB, UC, UFP, UPCB, and US. Morphological characters were analyzed using standard procedures. The indumentum and spores of the new species were studied using a scanning electron microscope. Species delimitation is proposed based on our preliminary phylogenetic studies, as well as on morphology and geographical distribution.Key results – Cyclodium alansmithii Bohn & Labiak is recognized as a new species, described, and illustrated. The most similar species is Cyclodium inerme (Fée) A.R.Sm., from which it differs by ovate-lanceolate and bicolored scales, reduced fronds, truncate pinna bases, and non-ciliate indusia. Cyclodium alansmithii is currently assessed as Endangered (EN) using IUCN criteria, but more fieldwork and herbarium studies are necessary to establish a more accurate conservation assessment. Cyclodium trianae (Mett.) A.R.Sm. var. chocoense A.R.Sm. is here elevated to species rank. A key to species of Cyclodium with free veins is provided.https://plecevo.eu/article/24669/download/pdf/AmazonbiodiversityfernsGuayana Shieldpolyb |
| spellingShingle | Amabily Bohn Fernando Matos Paulo Labiak Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins Plant Ecology and Evolution Amazon biodiversity ferns Guayana Shield polyb |
| title | Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins |
| title_full | Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins |
| title_fullStr | Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins |
| title_full_unstemmed | Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins |
| title_short | Taxonomic novelties in Cyclodium (Dryopteridaceae) and a key to the species with free veins |
| title_sort | taxonomic novelties in cyclodium dryopteridaceae and a key to the species with free veins |
| topic | Amazon biodiversity ferns Guayana Shield polyb |
| url | https://plecevo.eu/article/24669/download/pdf/ |
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