Common Bean, Garden Bean, Green Bean, String Bean
Kingdom: Plantae, Division: Magnoliophyta, Class: Magnoliopsida, Order: Fabales, Family: Fabaceae, Genus: Phaseolus, Species: Phaseolus vulgaris · Fabaceae (Legume, Pea, or Bean family) · Compound: Trifoliate (three leaflets). Deciduous/Annual.
Species
Phaseolus vulgaris (Confidence level: 95%)
Leaf Type
Compound: Trifoliate (three leaflets). Deciduous/Annual.
Family
Fabaceae (Legume, Pea, or Bean family)
Shape
Ovate to broadly ovate with an acute or acuminate tip.
Size
Total leaf with three leaflets approximately 4-8 inches wide; individual leaflets 2-5 inches long and 1.5-3.5 inches wide.
Margin
Entire (smooth), though sometimes appearing slightly wavy or undulating.
Arrangement
Alternate along the vine or stem; leaflets within the compound leaf are arranged as a terminal one and two opposite lateral ones.
Rarity
Very Common; ubiquitous in vegetable gardens and commercial agriculture.
Color & Pattern
Uniformly bright to medium green. Upper surface is matte; no distinct variegation or spotting is visible on this healthy specimen.
Venation Pattern
Pinnate and reticulate. Distinct primary midrib with secondary veins branching toward the margins, creating a net-like appearance.
Texture & Surface
Pubescent (lightly hairy) to the touch, often feeling slightly scratchy or 'velvety' due to microscopic hooked hairs. Upper surface is slightly rugose (wrinkled).
Description
An herbaceous annual plant that naturally grows as a climbing vine or a compact bush. It features trifoliate leaves and produces white, pink, or purple pea-like flowers that develop into edible pods containing seeds (beans).
Key Features
Trifoliate leaf structure, ovate leaflets with pointed tips, slightly textured/hairy surface, and characteristic square-to-round stems associated with legumes.
Habitat
Cultivated in garden settings, vegetable patches, and agricultural fields. Prefers well-drained, nutrient-rich soil with consistent moisture and full sun.
Geographic Range
Originally native to Central and South America; now grown globally as one of the most widely cultivated food crops in temperate and tropical zones.
Condition Notes
The leaves appear to be in Excellent condition. They are vibrant green with no signs of chlorosis, rust, or significant insect herbivory. A skipper butterfly is utilizing the surface for basking.
Interesting Facts
The common bean is one of the 'Three Sisters' in traditional indigenous American agriculture, often grown alongside corn and squash for mutual benefit.
Medicinal & Uses
Globally essential food crop used for green pods or dried seeds. Rich in protein and fiber. Historically used in folk medicine as a diuretic or to treat certain skin conditions, though primarily used for nutrition.
Ecological Role
As a legume, it forms a symbiotic relationship with Rhizobium bacteria to fix nitrogen into the soil. It is a nectar source for pollinators and a host for various insects like the skipper butterfly pictured.
Similar Species
Lima beans (Phaseolus lunatus) have more leathery leaves; Soybeans (Glycine max) have more rounded/hairy leaflets; Kudzu (Pueraria montana) has larger, more lobed leaflets.
Foraging Tips
Best identified in summer when trifoliate leaves are large and green. Look for the presence of long pods or delicate zygomorphic (pea-like) flowers to confirm the species.
Toxicity Warning
Non-toxic when cooked. However, raw beans (especially dry seeds) contain phytohaemagglutinin, which can cause gastrointestinal distress if consumed in significant quantities without heat treatment.