Kingdom: Plantae (plants)
Division: Anthocerotophyta (hornworts)
Division: Bryophyta (mosses)
Division: Hepatophyta (liverworts)
Subkingdom: Tracheobionta (vascular plants)
Division: Equisetophyta (horsetails)
Division: Lycopodiophyta (ferns)
Division: Psilophyta (whisk-ferns)
Division: Pteridophyta (ferns)
Superdivision: Spermatophyta (seed plants)
Division: Coniferophyta (conifers)
Division: Cycadophyta (cycads)
Division: Ginkgophyta (ginkgo)
Division: Gnetophyta (mormon-teas and other gnetophytes)
Division: Magnoliophyta (flowering plants)
Class: Liliopsida (monocotyledons)
Class: Magnoliopsida (dicotyledons)
Subclass: Asteridae
Subclass: Caryophyllidae
Subclass: Dilleniidae
Subclass: Hamamelidae
Subclass: Magnoliidae
Subclass: Rosidae
Order: Apiales
Order: Celastrales
Order: Cornales
Order: Euphorbiales
Order: Fabales
Order: Geraniales
Family: Balsaminaceae (Touch-me-not family)
Family: Geraniaceae (Geranium family)
Family: Limnanthaceae (Meadow-foam family)
Family: Oxalidaceae (Wood-Sorrel family)
Species: Oxalis stricta (Yellow Wood Sorrel) (~ full ~)
Species: Oxalis sp. (Shamrock) (~ photos ~)
Family: Tropaeolaceae (Nasturtium family)
Order: Haloragales
Order: Linales
Order: Myrtales
Order: Podostemales
Order: Polygalales
Order: Proteales
Order: Rafflesiales
Order: Rhamnales
Order: Rhizophorales
Order: Rosales
Order: Santalales
Order: Sapindales