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Lichen — Free Biology Illustration | GPAI | GPAI

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Lichen

Lichen

Biology

Lichen

Flat to low-growing lichen thallus forming an irregular patch tightly attached to a surface such as rock. The composite body is pale green to gray-green, sometimes slightly yellowish, with subtle mottling and a rough, leathery to crusty organic texture. The thallus has uneven lobed, ruffled, or frilly leafy margins with patchy branching segments, appearing as a compact symbiotic growth without stems or true leaves.

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