Evernia


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Evernia

 

the genus of lichens of the family Usneaceae. The soft bushy thallus consists of narrow cylindrical or oblate branching blades. The upper surface is greenish gray, and the lower surface is whitish. The lichens contain everninic acid, usnic acid, and other lichen acids. There are about 15 species, growing on the trunks and limbs of trees and, less commonly, in the soil. The USSR has about eight species. Some species—including the most common, Evernia prunastri—are used in the perfume and drug industries.

References in periodicals archive ?
Evernia prunastri has been considered as a good bio-accumulator of metals (CERCASOV & al., 2002; CONTI & al., 2004).
The lichen-forming ascomycete Evernia mesomorpha associates with multiple genotypes of Trebouxia jamesii.
Ramalina menziesii was the dominant lichen in the canopy, contributing 78% of the total lichen biomass or 2964 [+ or -] 615 g/tree; Usnea contributed 20% ([mean] = 767 [+ or -] 143 g/tree) and Evernia prunastri 2% ([mean] = 57 [+ or -] 11 g/tree).
Biosorbent Biosorption capacity, mg [g.sup.-1] Ficus religiosa (peepal) [22] 3.60 Hypogymnia physodes (Foliose lichen) [23] 9.90 Evernia prunastri (fruticose lichen) [24] 5.72 R.
For most of the species, except Evernia prunastri and Platismatia glauca, the cumulative n-hexane and diethyl ether extracts did not reach a quarter of the global extraction yields and the highest quantity of compounds was extracted with methanol.
(Quim, Evernia, Parmotrema, Usnea, Xanthoria, Portugal).
Show entrances will be located at Evernia St./Flagler Dr.
y Evernia prunastri (L.) Ach., entre otras, especies mas toxisensibles, generalmente poco o nada nitrofilas y propias de ambientes menos polucionados.
Evernia prunastri (L.) Ach.--2: ELL (BCN-Lich 17375), Mm; 4: ELL (BCN-Lich 17397), Pp; 6: ELL (BCN-Lich 17439), Ps; 8: BM (SALA-L 4617), EA, ES & RA (MACB 102241), ELS (SANT 1 1664), Am, Qp; 10: MR (MA-Lich 16394), SM (MA-Lich 16342), Qp; 11: BM (SALA-L 4779), EA, ES & RA (MACB 102078), ELL (BCN-Lich 17626, 17634), MV & VJR (MAF-Lich 16852), VA (VAL-Lich 27548), Qf, Qi; 12: VA (VAL-Lich 27564), Qi.
and saxicolous Evernia prunastri (L.) Ach., are less common (Fig.
Effects of SO2 fumigations on photosynthetic CO2 gas exchange, chlorophyll a fluorescence emission and antioxidant enzymes in the lichens Evernia prunastri (L.) Ach.