Definition of "thalli" [thalli]

• A plural of thallus. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Lichens are extreme examples [104]: the moist thalli of such species as Xanthoria candelaria and Rhizoplaca melanophthalma fully tolerated gradual or rapid freezing to -196 °C, and even after being stored for up to several years, almost immediately resumed normal photosynthetic rates when warmed and wetted."
• "Pigmentation may be constitutive for particular species or appear as a plastic response to irradiance, for example, originally colorless Cladonia and Cladina lichens quickly develop dark-pigmented thalli after exposure to higher levels of solar radiation [122]."
• "Lichens are particularly sensitive to mechanical damage as they grow extremely slowly and cannot quickly repair damaged thalli."