Tropicos, botanical information system at the Missouri Botanical Garden, available at http://www.tropicos.org/
Reference for:
Petenaea cordata
Source:
Angiosperm Phylogeny Website, 2010
Acquired:
2010-12-01
Notes:
Angiosperm Phylogeny Website, botanical information system at the Missouri Botanical Garden, available at http://www.mobot.org/MOBOT/research/APweb/
Reference for:
Petenaea cordata
Source:
The International Plant Names Index (IPNI), 2007 - 2011
Acquired:
2011-01-01
Notes:
The International Plant Names Index, botanical information system from the Royal Botanic Gardens, Kew, the Harvard University Herbaria, and the Australian National Herbarium, available at http://www.ipni.org/index.html