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
Reference for:
Acanthus polystachyus
Source:
Lamiales of North America Update
Acquired:
2011-05-26
Notes:
Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)