Similar species Sarcoscypha coccinea

similar species include s. dudleyi , s. austriaca, , in literature, confusion amongst 3 common. examination of microscopic features required definitively differentiate between species. sarcoscypha occidentalis has smaller cups (0.5–2.0 cm wide), more pronounced stalk 1–3 cm long, , smooth exterior surface. unlike s. coccinea, found in new world , in east , midwest north america, not in far west. occurs in central america , caribbean. in north america, s. austriaca , s. dudleyi found in eastern regions of continent. s. dudleyi has elliptical spores rounded ends 25–33 12–14 µm , sheathed when fresh. s. austriaca has elliptical spores 29–36 12–15 µm not sheathed when fresh, have small polar caps on either end. macaronesian species s. macaronesica, misidentified s. coccinea, has smaller spores, typically measuring 20.5–28 7.3–11 µm , smaller fruit bodies—up 2 cm (0.8 in) wide.