Arthoniales
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The Arthoniales is the second largest order of mainly crustose lichens, but fruticose lichens are present as well. The order contains around 1500 species, while the largest order with lichenized fungi
Cryptothecia
Bactrospora brevispora, shown here growing on a cypress stump, is one of many taxa of uncertain familial placement in the Arthoniales.
Roccellaceae
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The Roccellaceae are a family of mostly lichen-forming fungi in the order Arthoniales, established by the French botanist François Fulgis Chevallier in 1826. Species in the family exhibit various grow
Arthoniales
…within the phylum Ascomycota. The order includes seven families (Andreiomycetaceae, Arthoniaceae, Chrysotrichaceae, Lecanographaceae, Opegraphaceae, Roccellaceae and Roccellographaceae). Lecanographaceae, Roccellographaceae, Opegraphaceae and Roccellaceae are well-supported families within Arthoniales, and they…
Roccella gracilis Flickr pellaea
Sigridea californica is a crustose member of the Roccellaceae.
Roccella galapagoensis is a fruticose member of the Roccelaceae.
Litmus paper is made from dyes obtained from several lichens, including some Rocella species.