Polycauliona luteominia Red firedot lichenThis crustose lichen has a thin, immersed basal thallus, a
Polycauliona luteominia Red firedot lichenThis crustose lichen has a thin, immersed basal thallus, and so generally appears as a smattering of round apothecia. The apothecia have a prominent margin, and a flat or concave disc. P. luteominia comes in two varieties: var. luteominia, which has orange apothecia, and var. bolanderi, which has bright red apothecia. Both can be found on rock and soil near the Pacific coast of North America. images: source | source | sourceinfo: source -- source link
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