The inflorescence in Commelinaceae

Horn²,

Almeida³

2018

A total evidence phylogeny for Pontederiaceae is herein presented based on new morphological and previously published molecular data. Our results led us to re-circumscribe Pontederia to include Monochoria, Pontederias.s. and the polyphyletic Eichhornia. We provide the needed ten new combinations and 16 typifications, arrange a total of 25 accepted species (six representing re-established names) in 5 new subgenera. Furthermore, we provide an identification key for the two genera accepted by us in Pontederiaceae, an identification key to the subgenera, identification keys to the species of each subgenus and commentaries on Pontederias.l., as well as for each subgenus and each species.

Section: Methodsmentioning

confidence: 99%

Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L.

Horn²,

Almeida³

2018

“…According to Panigo et al (2011), the basic inflorescence pattern for Commelinaceae is a many-branched, pedunculate and terminal thyrse, with verticillate cincinni, each cincinnus multi-flowered. Based on Brenan (1966) and Panigo et al (2011), we could also infer that the plesiomorphic inflorescence architecture for Murdannia would correspond to the basic inflorescence pattern for Commelinaceae. Brenan (1966) indicates that most of the variation in inflorescence architecture could be derived from this basic type, as exemplified by the Asian Murdannia divergens , by only three changes.…”

Section: Resultsmentioning

confidence: 99%

“…Brenan (1966) indicates that most of the variation in inflorescence architecture could be derived from this basic type, as exemplified by the Asian Murdannia divergens , by only three changes. On the other hand, Panigo et al (2011) states that additional changes would be necessary to express all the known variation in the inflorescence morphology for Murdannia , as: (1) the production of coflorescences, in addition to the main florescence; (2) variation in the length of the peduncle and internodes of the main florescence; (3) variation in the number of cincinni per node; (4) variation in the arrangement of cincinni on each node of the main florescence; (5) variation in the length of the cincinnus peduncle; and (6) variation in the total flower number per cincinnus. These changes can occur separately or in different combinations.…”

Section: Resultsmentioning

confidence: 99%

“…The classification of the vegetation patterns follows IBGE (2012). The indumenta and shapes terminology follows Radford et al (1974); the inflorescence terminology and morphology follows Weberling (1965, 1989) and Panigo et al (2011); the fruit terminology follows Spjut (1994) and Ancy and Nampy (2014); and seeds terminology follows Faden (1991) and Ancy and Nampy (2014). The conservation statuses were proposed following the recommendations of IUCN Red List Categories and Criteria, Version 3.1 (IUCN 2001).…”

Section: Methodsmentioning

confidence: 99%

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Taxonomic revision of Neotropical Murdannia Royle (Commelinaceae)

Faden²,

Almeida³

2016

This study provides a taxonomic revision for the Neotropical species of the genus Murdannia. Six species are recognized as native, including a new species and a new combination, while two Asian species are recognized as invasive. We present an identification key, a table summarizing the morphologic differences among the species, a new synonym, six lectotypifications, a distribution map, and descriptions, comments and photographic plates for each species. We also provide comments on the morphology of the Neotropical species of Murdannia, comparing them with the Paleotropical species, and a discussion of inflorescence architecture in the genus as a whole.

“…The classification of the vegetation patterns follows IBGE (2012). The indumenta and shapes terminology follows Radford et al (1974); the inflorescence terminology and morphology follows Weberling (1965, 1989) and Panigo et al (2011); the fruit terminology follows Spjut (1994) and Joseph & Nampy (2012); and seeds terminology follows Faden (1991) and Joseph & Nampy (2012). The conservation statuses were proposed following the recommendations of IUCN Red List Categories and Criteria, Version 3.1 (IUCN 2001).…”

Section: Methodsmentioning

confidence: 99%

Synopsis of Commelina L. (Commelinaceae) in the state of Rio de Janeiro, reveals a new white-flowered species endemic to Brazil

Forzza²

2017

A synopsis for the genus Commelina in the state of Rio de Janeiro, Brazil, is presented here, including a new species, ten new synonyms, five designated lectotypes, two designated epitypes and an excluded name. Commelina huntii, a new species, is remarkable due to the combination of rusty to rusty-brown hairs at the margin of its leaf-sheaths, connate spathes, white flowers with auriculate medial petal, ovaries with sparse black papillae and dehiscent fruits. Additionally, we provide an identification key, illustrations, and conservation status for the species of Commelina recorded in the state of Rio de Janeiro.