An analysis of new angiosperm species discoveries in Brazil (1990-2006).

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Growing knowledge: an overview of Seed Plant diversity in Brazil (2015, background): “According to Sobral & Stehmann (2009), Brazilian new species represented an average of 7.8% of the plants described for the world between 1990 and 2006.”
New Brazilian Floristic List Highlights Conservation Challenges (2012, background): “…of herbarium specimens of Brazilian plants collected to date is far from sufficient to adequately represent the native plant diversity as a whole (Sobral and Stehmann, 2009) and major initiatives are underway to increase the size and availability of the collections (CNPq 2010, DCBio 2010, GPI…”
Completeness of digital accessible knowledge of the plants of Brazil and priorities for survey and inventory (2014, background): “Gaps are therefore places that have not been sampled thoroughly (Kier et al., 2005; Sobral & Stehmann, 2009).”