Rhynchospora seccoi, a new species of Rhynchospora sect. Tenues (Cyperaceae) from Brazilian Amazon (Serra dos Carajas, Para State)

被引：6

作者：

Nunes, Clebiana De Sa ^{[1
]}

Silva Da Silva Filho, Pedro Joel ^{[2
]}

Thomas, William Wayt ^{[3
]}

Braganca Gil, Andre Dos Santos ^{[4
]}

机构：

[1] Univ Fed Rural Amazonia, Museu Paraense Emilio Goeldi, Prog Posgrad Ciencias Biol Bot Trop, Campus Pesquisa,Av Perimetral 1901, BR-66077530 Belem, Para, Brazil

[2] Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil

[3] New York Bot Garden, 2900 Southern Blvd, Bronx, NY 10458 USA

[4] Museu Paraense Emilio Goeldi, Coordenacao Bot COBOT, Campus Pesquisa,Av Perimetral 1901, BR-66077530 Belem, Para, Brazil

来源：

PHYTOTAXA | 2019年 / 405卷 / 02期

关键词：

Amazon; canga; ironstone outcrops; Neotropics; new species;

D O I：

10.11646/phytotaxa.405.2.4

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Rhynchospora seccoi, a new species of Rhynchospora sect. Tenues (Cyperaceae) is herein described and illustrated. This new species from Serra dos Carajas (Para State, Brazil) is morphologically similar to R. tenuis and R. riparia, but differs by being annual and having often cauline leaves, a synflorescence comprising 1 terminal and 2-3 axillary paniculodia, a nutlet with a rounded apex, a nutlet surface with 8-10(12) transverse ridges of vertically oriented linear cells, and a persistent style-base that is brown, shallowly triangular, and shortly bilobed at the base, with the lobes not extending along the shoulders of nutlet.

引用

页码：91 / 100

页数：10

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