taxonomy Directory

cladistics.org: The Willi Hennig Society
The Willi Hennig Society is a non-for profit organization that promotes the theory and practice of phylogenetic systematics.
Keyword: cladistics , evolution , phylogenetic systematics , phylogeny , systematics , taxonomy , willi hennig , willi hennig society
www.cladistics.org/


plants.usda.gov: Crop Nutrient Tool | Usda Plants
Crop Nutrient tool provided as a service by USDA PLANTS
Keyword: nrcs , plant taxonomy , plants , usda
plants.usda.gov/npk/main


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