Which plant typically produces a single stout, heavy flowering stem?

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

Answer: (D)

Understanding how a weed bears its flowers helps you identify it in the field. Some plants push most of their reproductive effort into one main, sturdy stalk, so they look like a single, heavy flowering stem rather than many branches or multiple blooming shoots. Houndstongue typically forms a basal rosette and then sends up one robust flowering stalk that carries a dense cluster of flowers at the tip. That prominent, solitary stem is the characteristic you’d notice first, making it easier to recognize among other plants that branch more or produce flowers on multiple stems. The other options differ in growth habit: tamarisk is a branched shrub, jointed goatgrass has multiple culms with branched inflorescences, and common teasel, while tall and noticeable, is described by a different typical flowering arrangement.