Which plantain species has slender, narrow leaves about 1 inch across with three to five prominent veins and a short cylindrical seed head?

Which plantain species has slender, narrow leaves about 1 inch across with three to five prominent veins and a short cylindrical seed head?

• A. Plantain, Buckhorn
• B. Plantain, Blackseed and Broadleaf
• C. Purslane, Common
• D. Quackgrass

Answer: (A)

The key idea is matching the leaf form and the flower/seed structure to identify the plant. Buckhorn plantain has slender, narrow leaves about 1 inch wide with three to five strong, parallel veins running from the base, and it produces a short, cylindrical seed head. That combination of narrow leaves with a few prominent veins and a compact cylindrical spike is the standout signature of this species, making it the best fit for the description. Purslane is a low-growing succulent weed with different leaves and habit, quackgrass is a grass with a different leaf shape and seed head, and the other plantains typically have broader leaves and different veining or seed-head forms, so they don’t match as well.

The key idea is matching the leaf form and the flower/seed structure to identify the plant. Buckhorn plantain has slender, narrow leaves about 1 inch wide with three to five strong, parallel veins running from the base, and it produces a short, cylindrical seed head. That combination of narrow leaves with a few prominent veins and a compact cylindrical spike is the standout signature of this species, making it the best fit for the description. Purslane is a low-growing succulent weed with different leaves and habit, quackgrass is a grass with a different leaf shape and seed head, and the other plantains typically have broader leaves and different veining or seed-head forms, so they don’t match as well.