Cyperus prophyllatus: An endangered aquatic new species of Cyperus L. (Cyperaceae) with a exceptional spikelet disarticulation pattern among about 950 species, including molecular phylogenetic, anatomical and (micro)morphological data

被引：3

作者：

de Oliveira Ribeiro, Andre Rodolfo ^{[1
]}

Pereira-Silva, Luciana ^{[2
,3
]}

Silva Vieira, Jessika Paula ^{[4
]}

Larridon, Isabel ^{[3
,5
]}

Ribeiro, Vinicius Santos ^{[6
]}

Felitto, Guilherme ^{[7
]}

Siqueira, Geovane Souza ^{[7
]}

Alves-Araujo, Anderson ^{[8
]}

Alves, Marccus ^{[9
]}

机构：

[1] Univ Fed Ceara, Dept Fitotecnia, Campus Pici, Fortaleza, Ceara, Brazil

[2] Univ Fed Santa Catarina, Dept Bot, Programa Posgrad Biol Fungos Algas & Plantas, Florianopolis, SC, Brazil

[3] Royal Bot Gardens, Surrey, England

[4] Univ Brasilia, Dept Bot, Campus Univ Darcy Ribeiro, Brasilia, DF, Brazil

[5] Univ Ghent, Dept Biol, Systemat & Evolutionary Bot Lab, Ghent, Belgium

[6] Univ Fed Ceara, Fac Educ, Fortaleza, Ceara, Brazil

[7] Reserva Nat Vale, Linhares, ES, Brazil

[8] Univ Fed Espirito Santo, Dept Ciencias Agr & Biol, Sao Mateus, ES, Brazil

[9] Univ Fed Pernambuco, Dept Bot, Recife, PE, Brazil

来源：

PLOS ONE | 2021年 / 16卷 / 06期

关键词：

TAXONOMIC CHANGES; ATLANTIC FOREST; INSIGHTS; CLASSIFICATION; PERFORMANCE; CYPEROIDEAE; MORPHOLOGY; ONTOGENY; REGION; WATER;

D O I：

10.1371/journal.pone.0249737

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Cyperus prophyllatus, an endangered new species of Cyperus (Cyperaceae) from an aquatic ecosystem of the Atlantic Forest, Espirito Santo State, southeastern Brazil, is described and illustrated. The spikelet morphology of Cyperus prophyllatus is unique among the c. 950 species of Cyperus in having both a conspicuous spikelet prophyll and a corky rachilla articulation, which remain persistent at the base of the spikelet after disarticulation. Our molecular phylogenetic data support the placement of C. prophyllatus in the C(3)Cyperus Grade and more precisely in the clade representing Cyperus sect. Oxycaryum, which also includes C. blepharoleptos and C. gardneri. Anatomical and (micro)morphological analyses corroborate the phylogenetic results, provide a better understanding of ecology and taxonomy, as well as reveal compatibility of structures with survival and dispersion in aquatic environments. A distribution map, table with distinctive characters of allied species, and conservation status are made available.

引用

页数：23