Prescottia ostenii Pabst (Orchidaceae): a new record for Brazil, with a complete morphological description

Singer, Rodrigo B.; Azevedo, Cecília Oliveira de; Berg, Cássio van den; Aguiar, Daniela de Paula

doi:10.1007/s12225-009-9143-1

Cited by 2 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The orchid Prescottia ostenii , an extremely rare and inconspicuous (up to 8.4 cm tall) forb, has been recorded only in Uruguay (type collection) and Rio Grande do Sul (2 records) (Singer et al 2009). All records are from the seashore plain, the most recent geological formation in southern South America (Menegat et al 1998).…”

Section: Paleoendemics and Neoendemicsmentioning

confidence: 99%

“…All records are from the seashore plain, the most recent geological formation in southern South America (Menegat et al 1998). This species is the only member of its genus with high tolerance of high water levels (Singer et al 2009). The lack of records of this species is likely due to limited collection effort and the species’ inconspicuousness and rarity.…”

Section: Paleoendemics and Neoendemicsmentioning

confidence: 99%

See 1 more Smart Citation

Potential Reflection of Distinct Ecological Units in Plant Endemism Categories

Ferreira

Boldrini

2011

Conservation Biology

View full text Add to dashboard Cite

The level of endemism at a site may indicate species richness of the site. Nevertheless, assessing endemism levels in taxonomic groups such as plants may be difficult because the species richness of plants is high relative to species richness of other taxonomic groups (e.g., vertebrates). A major problem in determining whether plant species are endemic is the lack of standardization of the geographic extent of endemism: species are considered endemic to, for example, countries, continents, or states. We compiled a history of the concept of endemism as it applies to plants. The application of the concept to geographic distribution dates from the 19th century, when European explorers discovered many taxa exclusive to regions outside Europe. Two types of endemism, paleoendemism and neoendemism, were then acknowledged, according to evolutionary age, and these categories are still in use. In the 20th century, most of the research on endemism focused on explaining range restriction on the basis of cytological data, edaphic and geological factors, and phylogeny. This research led to a vast number of concepts, of which only edaphic endemism remains relatively well accepted. More recently, researchers suggest that competition may determine endemism in some cases. We suggest that plants be labeled as endemic only if their distribution occurs in a distinct ecological unit, such as a biome. On the basis of a literature review of the factors that cause range restriction, we categorized endemic taxa as paleoendemic, neoendemic, edaphically endemic, or suppressed endemic. For example, Schlechtendalia luzulifolia, is a rare forb that is a paleoendemic species of the granite and sandstone-based grasslands of the Pampa. Levels of endemism in southern Brazilian grasslands are poorly known. We emphasize the importance of recognizing these grasslands as a single transnational biome so that levels of endemism of species therein can be assessed correctly.

show abstract

Section: Paleoendemics and Neoendemicsmentioning

confidence: 99%

Section: Paleoendemics and Neoendemicsmentioning

confidence: 99%

Potential Reflection of Distinct Ecological Units in Plant Endemism Categories

Ferreira

Boldrini

2011

Conservation Biology

View full text Add to dashboard Cite

show abstract

A revision of Prescottia (Orchidaceae: Orchidoideae, Cranichideae)

Azevedo¹,

Berg²,

Barros³

2014

Phytotaxa

View full text Add to dashboard Cite

This study of Prescottia is based on fieldwork, in situ observations and study of herbarium material. Fifteen species are recognised for Prescottia: P. carnosa, P. densiflora, P. ecuadorensis, P. glazioviana, P. lancifolia, P. leptostachya, P. lojana, P. montana, P. mucugensis, P. oligantha, P. ostenii, P. phleoides, P. plantaginifolia, P. spiranthophylla, and P. stachyodes. Seven lectotypifications, one neotypification, and six new synonymies are proposed. Prescottia spiranthophylla is re-established, and three nomina nuda are listed. Descriptions, a key to the species, illustrations, and distribution maps are provided.

show abstract

Prescottia ostenii Pabst (Orchidaceae): a new record for Brazil, with a complete morphological description

Cited by 2 publications

References 2 publications

Potential Reflection of Distinct Ecological Units in Plant Endemism Categories

Potential Reflection of Distinct Ecological Units in Plant Endemism Categories

A revision of Prescottia (Orchidaceae: Orchidoideae, Cranichideae)

Contact Info

Product

Resources

About