Which plant is characterized by a flap-like appendage at the base of its leaves?

• A. Tamarisk
• B. Jointed Goatgrass
• C. Common Teasel
• D. Houndstongue

Answer: (B)

A grass’s leaf-base anatomy can carry distinctive clues, and a flap-like appendage at the base of the leaf blade is an auricle. Jointed Goatgrass is known for prominent, flap-like auricles that wrap around the stem, forming a noticeable leaf-base feature. This makes it stand out in the field and helps distinguish it from plants that don’t have such leaf-base flaps, like tamarisk (a shrub with small scale-like leaves), common teasel, and houndstongue (broadleaf herbs without grass-shaped leaf bases). So the plant with that leaf-base flap is Jointed Goatgrass.