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Symbols
for Unknown Plants Developed
The NRCS National Plant Data Center has developed a list of symbols for unknown
plants. The cross-Federal agency standardized list consists of symbols
(beginning with the numeral 2) to represent "unknowns" in plant transects and
inventories. These symbols are useful to field staff involved in the National
Resources Inventory, grazing lands survey, and other inventories when a plant
cannot be identified to species or genus, but should be recorded. This new list
contains over one hundred "unknowns" ranging from 2FA=annual forb or 2LTR=litter
to 2SDBD=shrub, deciduous, broadleaf, dicot. The list of these symbols is
maintained by the National Plant Data Center and is available at
http://plants.usda.gov/cgi_bin/topics.cgi?earl=dl_unknown.html.
Your contact is Scott Peterson, Director NRCS National Plant Data Center, at
225-775-6280 ext. 11 or
scott.peterson@usda.gov.
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