Final answer:
The question seems to mix characteristics of horsetails with turfgrasses. Turfgrasses, unlike horsetails, have a variety of species with different characteristics, and some, such as Poa, exhibit a hairy ligule.
Step-by-step explanation:
The question regarding which turfgrasses have a hairy ligule is most closely related to the field of botany within Biology. There's a minor confusion here as the provided reference material primarily discusses the characteristics of horsetails (Equisetum), which are not classified as turfgrasses but are vascular plants with a primitive jointed stem structure. Turfgrasses, on the other hand, are a different group of plants altogether and include various species grown in lawns, sports fields, and golf courses for their dense, durable ground cover. While mentioning horsetails and their lack of variance or ligules could lead to a misunderstanding, the question concerns the anatomy of turfgrasses. Certain turfgrasses, such as those of the genus Poa (bluegrasses), have a hairy ligule that can be used as a distinguishing feature when identifying them.