Calió, Maria Fernanda; Pirani, José Rubens; Struwe, Lena (2008). "Morphology-based phylogeny and revision of Prepusa and Senaea (Gentianaceae: Helieae) — rare endemics from eastern Brazil". Kew Bulletin. 63 (2): 169–191. doi:10.1007/s12225-008-9030-1. S2CID1771844.
Hugh DeForrest Safford (1999). "Brazilian Paramos I. an Introduction to the Physical Environment and Vegetation of the campos de altitude". Journal of Biogeography. 26 (4 (Jul., 1999)). Blackwell Publishing: 694–712. doi:10.1046/j.1365-2699.1999.00313.x. JSTOR2656173.
jstor.org
Hugh DeForrest Safford (1999). "Brazilian Paramos I. an Introduction to the Physical Environment and Vegetation of the campos de altitude". Journal of Biogeography. 26 (4 (Jul., 1999)). Blackwell Publishing: 694–712. doi:10.1046/j.1365-2699.1999.00313.x. JSTOR2656173.
semanticscholar.org
api.semanticscholar.org
Calió, Maria Fernanda; Pirani, José Rubens; Struwe, Lena (2008). "Morphology-based phylogeny and revision of Prepusa and Senaea (Gentianaceae: Helieae) — rare endemics from eastern Brazil". Kew Bulletin. 63 (2): 169–191. doi:10.1007/s12225-008-9030-1. S2CID1771844.