Cladonia sulphurina (Michx.) Fr.

        Persistent primary thallus formed of small rounded squamules 2-8 mm wide, upper side green, underside whitish. Podetions erect 3-5 cm high, unbranched, often, especially towards the top, with lacerations or logitudinal fissures and even small misshapen cavities. These podétions are sometimes scaly at the base and end in a point or else by an incomplete or badly formed scyphus with sometimes jagged or irregular edges of the cup, the surface is floury to sorediate, pale yellowish-greenish, greyish-yellowish, sometimes with brownish or orange-brown spots especially towards the base. Apothecia rare, at top of podtions, globose, bright red, pycnidia rare, red-brown. C-, K-, KC+/- yellow, Pd-, UV+ white. Boreal species but mountain in France coming in the wooded moors.

N.B. Species confused with Cladonia deformis which contrary to its name has more regular and well-formed scyphae and above all is UV-.

N.B. Also pay attention to certain less yellowish forms of the Cladonia coccinea group and to the stockier and more fertile scyphae.