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ABSTRACT Fungi of the genus Geastrum are known as earthstar fungi, due to the stelliform morphology of their basidiomes. In the Amazon domain, there are 25 catalogued species of Geastrum, with several new records in recent years. Here we report three new species records of Geastrum for the Brazilian Amazon. Geastrum calycicoriaceum and G. rubropusillum were recorded in the southwestern transition zone between Amazon forest and Cerrado savanna. Geastrum calycicoriaceum was recorded for the first time in Brazil.

RESUMO Os fungos do gênero Geastrum são conhecidos como fungos estrela-da-terra, devido à morfologia esteliforme de seus basidiomas. No domínio amazônico, existem 25 espécies catalogadas de Geastrum, com vários novos registos nos últimos anos. Aqui relatamos três novos registos de espécies de Geastrum para a Amazônia brasileira. Geastrum calycicoriaceum e G. rubropusillum foram registrados na zona de transição sudoeste entre a floresta amazônica e o Cerrado. Geastrum calycicoriaceum foi registado pela primeira vez no Brasil.

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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