1 Basidiospore colorless, smooth, oval-shaped .

2 The basidiospore germination has been obtained by the liquid culture with 10—20% sporophore extract. The germination percentage is about 8—15%.

3 The micro-morphology of log-cultivated Phellinus igniarius, hymenium , basidiospore, conical seta and the discrete structure of mycelia were observed under scanning electron microscope.

4 Usually four sterigmata, each bearing one basidiospore , are borne on each basidium.

5 A small projection at the base of a basidiospore near its attachment to the sterigma.

6 A small at the base of a basidiospore near its attachment the sterigma.

7 The process from basidiospore germination to primordium formation of Pleurotus sajor-caju was observed with microscope.

8 The walls of hyphae are composed of two layers, while the walls of basidium and basidiospore are composed of three layers.

9 During germination, a very short germ tube is produced and basidiospore grows as a budding way.