Stereocaulon coniophyllum I. M. Lamb

Bot. Not. 114: 266 (1961).

 

 

Thallus: Pseudopodetia up to 5 cm tall (in Europe). True phyllocladia absent, phyllocladioid branchlets present, sometimes with complanate ends and then resembling phylloclada, corticate on upper side, sorediate on under side. Cephalodia protosacculate. Apothecia terminal on short branches. Spores 40-55(-65) x 3.5-4 µm, with up to 7 septa (Lamb 1961 fide Swinscow & Krog 1988).

Chemistry: Atranorin, normally with lobaric acid (Swinscow & Krog 1988).

Ecology: On rock.

Molecular data: Genbank

Distribution: Uganda, Europe, North America, Asia.

Note: "This species may be the sorediate counterpart of S. humbertii, but unlike the latter species its occurrence in East Africa is doubtful. Lamb (1977) recorded it for Uganda from a specimen coll. Hedberg (UPS). The species normally contains lobaric acid, whereas the Hedberg specimen lacks it. This difference in itself would not exclude the determination S. coniophyllum, but the Hedberg specimen, though sorediate, differs somewhat from the species as known in Norway, where it is frequent and where the type locality is" (Swinscow & Krog 1988).