Lathyrus odoratus (Sweet pea)

6/20/2010 · Blue Hill Reservation, Milford, Massachusetts · ≈ 4½ × 5″ (11 × 13 cm)

6/20/2010 · Blue Hill Reservation, Milford, Massachusetts · ≈ 1½ × 1′ (48 × 41 cm)

Kingdom	Plantae	Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Rosidae	Roses, legumes, proteas, dogwoods, hydrangeas, mistletoes, euphorbias, grapes, many more
Order	Fabales	Legumes (pea and bean families)
Family	Fabaceae	Legume family (peas and beans)
Genus	Lathyrus	From Greek lathyros, an old name for “pea”
Species	odoratus	From odorata, “fragrant,” or “sweet-smelling”