Department of Botany,
Bharathiar University, Coimbatore - 641 046
Flavoparmelia caperata (L.) Hale
Family :
Parmeliaceae
Hale, Mycotaxon 25: 604. 1986
Basionym: Lichen caperatus Linnaeus, Sp. PI.: 1147. 1753
ID :
BU/BRL/2022/007
Thallus :
Adnate to loosely adnate, foliose, 5-20 cm in diam., sometimes forming extensive patches, irregularly lobate
Lobes :
Subirregular, elongate, plane to subconvex, separate, 5-13 mm wide, contiguous to somewhat imbricate; apices rotund, crenate, eciliate
Upper Side:
Yellow green to pale yellow, occasionally green-gray (in shade), smooth but becoming rugose and folded with age, dull to somewhat shiny; epruinose and emaculate
Isidia :
Laminal, granular to wart-like, initially in circular soralia but becoming diffuse and confluent; isidia: absent
Lower Side :
Black centrally, brown and naked peripherally; rhizines: dense to sparse centrally to edge of brown zone, black, simple, sometime brown or white tipped
Medulla :
White with continuous algal layer
Rare, up to 8 mm wide, laminal, sessile; disc: brown; margin: smooth but sorediate sometimes, asci: clavate, 8-spored
Apothecia :
Simple, ellipsoid, hyaline, 15-24 x 8-13 µm Pycnidia: laminal, immersed conidia: weakly bifusiform, 6 x 1 µm
Ascospores :
Upper cortex K-, C-, KC+ yellow, P- ; medulla K-, C-, KC-, P+ red Secondary metabolites: upper cortex with usnic acid (major) and atranorin (trace); medulla with protocetraric acid (major) and caperatic acid (minor)
Chemistry :
