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Issue: Vol. 571 No. 1: 1 November 2022
Type: Article
Published: 2022-11-01
DOI: 10.11646/phytotaxa.571.1.6
Page range: 76-84
Abstract views: 51
PDF downloaded: 2

Thismia cordata (Thismiaceae), a new fairy lantern species from the Brazilian Atlantic Forest

Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão, 915, 22460-030, Rio de Janeiro, RJ, Brazil
Universidade Federal do Paraná, Departamento de Ciências Florestais, Av. Prefeito Lothário Meissner, 632, 82590-300, Curitiba, Paraná, PR, Brazil
Universidade Federal do Paraná, Departamento de Ciências Florestais, Av. Prefeito Lothário Meissner, 632, 82590-300, Curitiba, Paraná, PR, Brazil
Universidade Federal do Paraná, Departamento de Ciências Florestais, Av. Prefeito Lothário Meissner, 632, 82590-300, Curitiba, Paraná, PR, Brazil
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão, 915, 22460-030, Rio de Janeiro, RJ, Brazil
achlorophyllous Brazil Dioscoreales mycoheterotrophic neotropics Monocots

Abstract

A new species of Thismia (Thismiaceae) from the Brazilian Atlantic Forest is described and illustrated. Thismia cordata belongs to T. subg. Ophiomeris sect. Ophiomeris, and is mainly characterized by its flowers zygomorphic with gibbous perianth tube which is densely pilose on the inner surface, annulus surrounded by a prominent star-shaped ornamentation of 6-lobes with apex acute, densely pilose, outer perianth lobes ovate with base cordate, stamens with connective falcate, ovary glabrous, and stigma sharply trilobed, densely pilose. Detailed description, illustrations, notes on distribution, and preliminary conservation assessment are provided below.

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