Phaeoclavulina abietina

The species was first described by Christian Hendrik Persoon in 1794 as Clavaria abietina. It is commonly known as the "green-staining coral".[9] It was classified in the genus Ramaria (in the subgenus Echinoramaria),[8] until molecular phylogenetic showed that Ramaria was polyphyletic.[10]

Fruit bodies are leathery, and brittle when dry. They are small, measuring 2–5 cm (3⁄4–2 in) tall by 1–3 cm (3⁄8–1+1⁄8 in) wide, and branch from the central stem up to five times. The slender branches are slightly flattened or spreading, and forked or crested near the top. The color of the fruit body is medium yellow green to light olive, but will bruise a darker olive green to dark olive green. The stem is short, and have a mat of mycelia at its base, which is attached to rhizomorphs that branch into the substrate. The odor of the mushroom tissue ranges from indistinct to earthy, and it tastes initially sweet, then somewhat bitter.[9] The species is inedible.[11]

The spores are dark orange-yellow when collected in mass. Spores are pip-shaped to broadly elliptical, with one oblique end; their dimensions are 6–9 by 3.5–4.5 μm.[8] The basidia (spore-bearing cells) are typically four-spored, with the spores attached by sterigmata up to 7 μm long.[9]

Fruit bodies grow scattered or in groups (sometimes arranged in rows)[8] on the ground in duff of coniferous forests. In North America, it is found in the Pacific Northwest[9] and Mexico.[12] It is also found in Europe.[13]

• Phaeoclavulina abietina in Index Fungorum