Which weed is described as having bright-green leaflets and yellow flowers in a prostrate, warm-season annual growth habit?

Which weed is described as having bright-green leaflets and yellow flowers in a prostrate, warm-season annual growth habit?

• A. Puncturevine
• B. Purslane, Common
• C. Nimblewill
• D. Plantain, Buckhorn

Answer: (A)

This description points to a weed that spreads along the ground with a prostrate habit, has bright-green compound leaves made up of multiple leaflets, and produces yellow flowers. Puncturevine fits all of these traits: it grows as a warm-season annual that creeps across lawns, its leaves are pinnately compound with bright-green leaflets, and it bears distinct yellow blossoms. This combination—prostrate growth, yellow flowers, and leaflets rather than simple leaves—helps distinguish it from the others. Purslane, while also a low-growing warm-season annual with yellow flowers, has simple, smooth, succulent leaves rather than leaflets. Nimblewill is a warm-season perennial grass, not a broadleaf weed, and it won’t match the leaflet structure or the typical flowering pattern. Plant buckhorn plantain is a perennial broadleaf that forms rosettes and tall inflorescences, not a creeping prostrate annual with yellow flowers. So the description best matches puncturevine, the weed known for its bright-green leaflets, yellow flowers, and creeping prostrate habit.

This description points to a weed that spreads along the ground with a prostrate habit, has bright-green compound leaves made up of multiple leaflets, and produces yellow flowers. Puncturevine fits all of these traits: it grows as a warm-season annual that creeps across lawns, its leaves are pinnately compound with bright-green leaflets, and it bears distinct yellow blossoms. This combination—prostrate growth, yellow flowers, and leaflets rather than simple leaves—helps distinguish it from the others.

Purslane, while also a low-growing warm-season annual with yellow flowers, has simple, smooth, succulent leaves rather than leaflets. Nimblewill is a warm-season perennial grass, not a broadleaf weed, and it won’t match the leaflet structure or the typical flowering pattern. Plant buckhorn plantain is a perennial broadleaf that forms rosettes and tall inflorescences, not a creeping prostrate annual with yellow flowers.

So the description best matches puncturevine, the weed known for its bright-green leaflets, yellow flowers, and creeping prostrate habit.