rock tripe

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rock tripe

n
(Plants) Canadian any of various edible lichens, esp of the genus Umbilicaria, that grow on rocks and are used in the North as a survival food
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The ear may be regarded, fancifully, as a lichen, umbilicaria, on the side of the head, with its lobe or drop.
The antimicrobial activity of substances derived from the lichens Physcia aipolia, Umbilicaria polyphylla, Parmelia caperata and Hypogymnia physodes.
Crustinic acid, a tridepside from Umbilicaria crustulosa.
Oropogon (Esslinger, 1989), Psiloparmelia (Elix & Nash, 1992), Stereocaulon (Lamb, 1977; Boekhout, 1982), Xanthoparmelia (Nash, Gries & Elix, 1995), and Umbilicaria (Sipman & Topham, 1992) and unpublished information on the genus Hypotrachyna in the Neotropics.
Usnea sphacelata, Pseudephebe minuscula, Umbilicaria decussata), and soil algae have become established (Seppelt 1984; Smith 1990).
Crustose lichens tend to be replaced by foliose lichens, such as the rock tripe Umbilicaria dilenii, and even mosses, and soon the underlying organic substrate gets thicker and thicker.
Los generos mejor representados son Lecanora (30), Cladonia (28), Caloplaca (15), Umbilicaria (14) y Pertusaria (14).
The umbilicate growth form is also common throughout the Antarctic, and includes all the species of Umbilicaria.