Porella cordaeana (Porella cordaeana)
Description
P. cordaeana often looks very distinctive, but can nevertheless be tricky to identify. Its branched, often pinnate shoots (2.3-4 mm wide), large leaves (2 mm wide and nearly as long), and dull, dark green colour are all typical of Porella species. Generally it looks rather lax and flat, with little up-curling of leaf edges. The narrow lobule under each leaf runs well down onto the stem and has a twist near its acute tip. The underleaves are spaced out along the stem and hardly overlap each other. Unfortunately, these characteristics are not always well-developed and forms of P. platyphylla can mimic them.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Hepaticophyta
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Class: Jungermanniopsida
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Order: Porellales
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Family: Porellaceae
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Genus: Porella
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