Jamesiella dacryoidea is a thin, translucent grey-colored, teardrop-shaped lichen species that is differentiated from other species of Jamesiella by its color and shape.

[1][2] This lichen grows on rocks near bodies of saltwater, typically on top of bryophytes.

[1] This species is named after its teardrop shape, as dacryoideus in Latin means tear-shaped.

[1] Jamesiella dacryoidea has a broad, flat body with a pointed or rounded tip and transparent, grey-green, and then brown coloration.

[1] This lichen also contains photosynthetic green algae within the thallus and between the hyphae.