A flórula rupestre do Pico de Itabirito, Minas Gerais, Brasil: lista das plantas vasculares

Abstract

The rupestrian florula do Pico de Itabirito, Minas Gerais, Brazil: a list of vascular plants). This article presents a new survey of species of vascular plants from the campos rupestres of the Espinhaço Range in eastern Brazil. The study area is included in the Quadrilátero Ferrífero in Minas Gerais state, in the region of the Pico de Itabirito, municipality of Itabirito, around 20º 13′ 43″ S and 43º 51′ 39 W. The surveyed area is around 1193 ha, with altitude reaching more than 1300 m above sea level, with a vegetation mostly formed by rupestrian fields, either on iron and quartizitic substrates (denominated campo rupestre ferrífero and campo rupestre quartzítico, respectively). 722 species were found, distributed in 100 families and 384 genera. The ten richest families are Asteraceae (99 spp.), Orchidaceae (62 spp.), Melastomataceae (50 spp.), Leguminosae (36 spp.), Poaceae (30 spp.), Rubiaceae (26 spp.), Apocynaceae (23 spp.), Myrtaceae (22 spp.), Malpighiaceae (18 spp.), Cyperaceae (15 spp.), Eriocaulaceae (14 spp.) and Solanaceae (13 spp.). 47 species are included in the 2012 revised version of the List of Endangered Species of the State of Minas Gerais.

High endophytic diversity associated with roots of Cattleya milleri, an endemic orchid from rupestrian grasslands of the “Quadrilátero Ferrífero”, a Brazilian savanna hotspot area in Minas Gerais

“…ex Pabst) Van den Berg. C. milleri is a microendemic orchid, native to the the "Quadrilátero Ferrífero" -Minas Gerais, Brazil (Teixeira and Lemos Filho 2013), which occurs on rocky outcrops in iron-rich rupestrian grasslands areas of the Brazilian savanna (Cerrado) (CNCFlora 2020). It is considered under critical threat status.…”