Lesson plan
Puttea duplex
Puttea duplex is a species of lichen of uncertain familial placement in the order Lecanorales. This tiny, inconspicuous lichen forms pale greyish films over decaying moss on tree bark and produces extremely small, yellowish-brown disc-shaped fruiting bodies that are barely visible to the naked eye. It is distinguished from similar species by having an unusually large number of ascospores (16–24) packed into each spore sac, compared to the typical eight found in related lichens.
Article summary
Puttea duplex is a species of lichen of uncertain familial placement in the order Lecanorales. This tiny, inconspicuous lichen forms pale greyish films over decaying moss on tree bark and produces extremely small, yellowish-brown disc-shaped fruiting bodies that are barely visible to the naked eye. It is distinguished from similar species by having an unusually large number of ascospores (16–24) packed into each spore sac, compared to the typical eight found in related lichens.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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