TAXONOMY 



2 73 



in the basidium being undivided in the former and divided in the 

 latter. 



Order 2. Exobasidiales. This group is found growing parasitic- 

 ally on shrubs especially those of the heath family. The mycelium 

 lives in the tissues of the stems, leaves, sepals and petals and pro- 

 duces spongy fleshy yellowish or brownish galls which are popularly 

 called "Azalea apples." The galls are edible. They are covered 

 with a hymenium. 



FIG. 143. Boletus felleus in three stages of development. (After Patterson, 

 Flora W. and Charles, Vera K., Bull. 175, U. S. Dept. Agric., pi. xxxi, Apr. 29, 

 I9IS.) 



Order 3. Thelephorales, forms appearing on tree trunks as 

 leathery incrustations or as bracts on the ground, old logs, etc. 



Order 4. Clavariales, the coral or fairy club fungi. Fleshy coral 

 or club-shaped forms, all of which are saprophytes found in woods 

 growing in bunches out of leaf mold. They are all edible and of a 

 white, yellow or some other brilliant color. (See fig. 142.) 



