TAXONOMY 273 
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, 
1915 ) 
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.) 
