This type of foliage is also known as baker fern and is used as a filler; it has a woody stem and does not drink once cut. What is it?

The correct answer is leather leaf fern, which is recognized for its distinctive features and uses in floral arrangements. Leather leaf fern, scientifically known as Rumohra adiantiformis, is characterized by its glossy, leathery fronds and woody stems. These characteristics make it an excellent filler in floral design, adding texture and greenery without overwhelming other elements.

One significant aspect of leather leaf fern is that it does not absorb water once it has been cut. This property is important to note because it affects how the fern is used in arrangements; it is often employed not for its longevity after being cut but rather for the visual impact it provides at the moment of arranging. Its sturdy structure allows it to hold its shape well in a bouquet or floral design.

In contrast, the other options listed—Oregon fern, tree fern, and Galax leaves—do not share the same combination of traits. Oregon fern tends to be softer and more delicate, tree ferns are typically larger and are not commonly used as fillers, and Galax leaves have a different appearance and are known for their waxy surface and round shape rather than for being a woody-stemmed filler. Thus, leather leaf fern stands out as the foliage described in the question.