地衣Knowledge unit–Cladonia Wigg.（The digital museum of nature humanism）

＜＜＜Knowledge unit of ＞＞＞

Vegetative Morphology

Apothecial disc

Thallus

Two kinds of vegetative thalli of Cladoniform lichens are primary thallus and secondary thallus. Primary thallus is crustose or squamulose, persistent or deciduous. Secondary thallus grows on primary thallus, calls podetium, is straight, terete, hollow, single or branched, perforation or none, sometimes squamule, The top of podetium is acute or obtuse.

石蕊-無孔

石蕊-穿孔

穿杯石蕊島衣變種