Germplasm Resources Information Network (GRIN) Taxonomy Database
Acquired:
2003-01-21
Notes:
National Plant Germplasm System (NPGS), National Germplasm Resources Laboratory, Agricultural Research Service, USDA. http://www.ars-grin.gov/npgs/tax/index.html
Reference for:
Dennstaedtia flaccida
Source:
Tropicos, 2007 - 2011
Acquired:
2011-01-01
Notes:
Tropicos, botanical information system at the Missouri Botanical Garden, available at http://www.tropicos.org/
Reference for:
Dennstaedtia flaccida
Source:
Dennstaedtiaceae s.l. of North America Update
Acquired:
2011-11-09
Notes:
Updated for ITIS by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)