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Dirinaria applanata (Fee) D. D. Awasthi
Family: Caliciaceae
[Anaptychia applanata (Fée) A. Massal.,  more]
Dirinaria applanata image
Stephen Sharnoff  
Thallus: foliose, appressed to agglutinated, loosely appressed at the lobe tips, up to 6 cm in diam., pinnately or subpinnately lobate lobes: radiating, confluent, flat or convex, but sometimes concave towards the lobe tips, 0.5-2 mm wide, distinctly flabellate towards the lobe tips upper surface: gray, bluish gray or almost white, with a punctiform, rarely patchy white pruina or epruinose, sorediate soredia: farinose, in laminal, globose or elongated soralia pseudocyphellae: distinct, marginal, rarely also laminal, usually restricted to the peripheral parts of the lobes, sometimes reticulately confluent medulla: white, the lowest part sometimes orange, especially towards the lobe tips lower surface: black in center, paler towards lobe tips, erhizinate Apothecia: very rarely present, laminal on thallus, 0.5-1.5 mm wide disc: black, slightly grayish pruinose but mostly without a pruina ascospores: brown, 1-septate, narrowly ellipsoid, 15-22 x 6-8 µm Pycnidia: immersed in warts conidia: bacilliform, 3.5-5 x 0.8-1 µm Spot tests: upper cortex K+ yellow, C-, KC-, P+ yellow; medulla upper and lower part K-, C-, KC-, P- Secondary metabolites: upper cortex with atranorin, medulla with divaricatic acid and few terpenes in low concentration. Substrate and ecology: on bark, wood and rocks, from sea level to the edges of montane rain forests World distribution: in all tropical regions of both hemispheres with few collections from subtropical parts of Japan Sonoran distribution: especially in thorn forests and desert transition areas of Baja California, Baja California Sur, Sinaloa and Sonora. Notes: Dirinaria applanata is very similar to D. aegialita and only specimens with distinctly farinose soredia are assigned here to D. applanata.
Dirinaria applanata image
Troy McMullin  
Dirinaria applanata image
Stephen Sharnoff  
Dirinaria applanata image
Stephen Sharnoff  
Dirinaria applanata image
Dirinaria applanata image
Dirinaria applanata image
Dirinaria applanata image
Dirinaria applanata image
Dirinaria applanata image
Dirinaria applanata image