diff --git a/data/56/79/87/567987DCFF9AFF80FAD6FDF919D5FF2E.xml b/data/56/79/87/567987DCFF9AFF80FAD6FDF919D5FF2E.xml new file mode 100644 index 00000000000..b50e7837193 --- /dev/null +++ b/data/56/79/87/567987DCFF9AFF80FAD6FDF919D5FF2E.xml @@ -0,0 +1,208 @@ + + + +Micrasterias levergerensis sp. nov. (Desmidiaceae, Zygnematophyceae), a new species from the Pantanal of Mato Grosso State, Brazil + + + +Author + +Santos, Waléria Finícia De Oliveira Duarte Dos +0009-0001-7167-6900 +Universidade Federal de Mato Grosso, Instituto de Biociências, Curso de Pós-Graduação em Biologia Vegetal, Av. Fernando Correa da Costa, nº 2367, 78060 - 900 Cuiabá, MT, Brazil. +waleriafinicia@gmail.com + + + +Author + +Bicudo, Carlos Eduardo De Mattos +0000-0003-4030-9961 +Instituto de Pesquisas Ambientais, Núcleo de Conservação da Biodiversidade, Av. Miguel Estéfano, nº 3687, 04301 - 902 São Paulo, SP, Brazil. +cbicudo@terra.com.br + +text + + +Phytotaxa + + +2023 + +2023-11-23 + + +626 + + +3 + + +219 +222 + + + + +http://dx.doi.org/10.11646/phytotaxa.626.3.9 + +journal article +10.11646/phytotaxa.626.3.9 +1179-3163 +13879351 + + + + + +Micrasterias levergerensis +W.F.O.Duarte-dos-Santos & C.E.M.Bicudo + + +sp. nov. + +( + +Figs. 1–2 + +) + + + + +Description: +Cell approximately circular, semicell 5-lobed, polar lobe broadly cuneate, lateral margins straight, apex slightly retuse at the middle, apical margin with small irregularly disposed spines, lateral and basal lobes equal size, 2-furcate, incision little deep between 1 +st +order lobules, incision shallow between 2 +nd +order lobules, 2 +nd +order lobules ending in small spines, the external usually a little longer than the internal ones, chloroplast with prominent lamellae along the between lobes incisions, pyrenoids various chaotically distributed along the plastid, cell wall colorless to light brown. Cell measurements: length 80–92 µm, maximum breadth 79.8–85 µm, breadth of polar lobe 28.5–33.4 µm, breadth of isthmus 17–20.1 µm. + + + + +FIGURES 1–2. + +Micrasterias levergerensis + +W.F.O.Duarte-dos-Santos & C.E.M.Bicudo, + +sp. nov. + +(Fig. 1, photomicrograph by W.F.O. Duarte-dos-Santos). Scale bars = 10 µm. + + + + +Type: + +BRAZIL +. +Mato Grosso +: +Município de Santo Antônio do Leverger +, +Pantanal +, +pond +, +56°06’27.0” W +, +15°48’14.8” S +, + +02 October 2017 + +, + +N.D. da Silva Paes +s.n + +. ( +holotype +: Algae collection sample +UFMT 651 +) + +. + + + + +Etymology: +The epithet is an adjective related to Santo Antônio do Leverger, the locality from which the type-material was collected. + + + + +Habitat: +metaphyton. + + + + +Population studied was very homogeneous, with almost no +form variation +detected. The polar lobe broadly cuneate with straight lateral margins and a slightly retuse apex in the middle, with irregularly distributed small spines are diagnostic for this species. + +Micrasterias levergerensis + +morphologically resembles + +M. tetraptera +West & G.S. +West (1898: 296) + +and + +M. papillifera +Brébisson +ex +Ralfs (1848: 72) +var. +papillifera +f. +papillifera + +, but differs mainly in its straight polar lobe lateral margins. Furthermore, + +M +. +tetraptera + +representative specimens are larger, and the cell length to breadth ratio as well as the polar lobe breadth of + +M +. +papillifera +var. +papillifera +f. +papillifera + +are greater. + + +Present + +M. levergerensis + +must also be compared with + +Micrasterias papillifera +Brébisson +ex +Ralfs var. +verrucosa +Schmidle (1896: 23) + +(today a synonym for the typical + +Micrasterias papillifera + +), from which differ by having slightly larger cells, but mostly in its cell wall smooth, not granulate with a series of c. 5 supra isthmial larger granules. + + + + \ No newline at end of file