Department of Botany,
Bharathiar University, Coimbatore - 641 046
Chrysothrix candelaris (L.) J.R.Laundon
Family :
Chrysotrichaceae
J.R. Laundon, Lichenologist 13(2): 110 (1981)
Basionym: Byssus candelaris L. 1753
ID :
BU/BRL/2022/002
Thallus :
Crustose, leprose, unstratified or, in thick specimens, sometimes indistinctly stratified, indeterminate, thin, irregularly spreading, sometimes forming scattered granules, but usually ±continuous
Lobes :
Upper Side:
Bright yellow throughout, often with an orange or greenish tinge, composed of a mass of fine soredia, 12-30(-40) µm in diam.
Isidia :
Lower Side :
Medulla :
Usually not evident, in thick thalli sometimes indistinctly present, yellow
Ascomata: rare, up to 0.5 mm in diam., ±superficial disc: pale orange, often yellow-pruinose margin: thin, ecorticate, soon becoming excluded exciple: poorly developed, composed of anastomosing hyphae epihymenium: hyaline, up to 18 µm tall, composed of of a reticulate layer of richly branched paraphysoids hymenium: hyaline, up to 50 µm tall (including epihymenium); paraphysoides: 1-1.5 µm wide, richly intertwined in epihymenium; hypothecium: colorless, poorly developed
Apothecia :
Asci: clavate, 8-spored ascospores: 9-14 x 3 µm
Ascospores :
K- or K+ orange, sometimes darkening to red-black, C-, KC-, P- or P+ orange; UV+ dull orange or UV- Secondary metabolites: calycin and/or pinastric acid
Chemistry :
