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Bulletin of the British Museum (Natural History)

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LICHEN GENUS MICAREA IN EUROPE 85<br />

Table 2 Chemical content and corresponding spot test reactions <strong>of</strong> European species <strong>of</strong> Micarea known to<br />

contain lichen substances. +, present; ±, presence variable and sometimes absent; ?, present occa-<br />

sionally as trace amounts or contaminant; R, red; Y, yellow; fY, faint yellow; O, persistent orange; ( )<br />

reactions not obtainable in many collections; *, including 3 or 4 accessory substances.

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