134 MINOR PRODUCTS OF PHILIPPINE FORESTS 



above the slightly swollen base to 6 millimeters at the insertion 

 into the pileus. It is long, solid, fibrous throughout, white to 

 light brown, and smooth except above the annulus, where it is 

 slightly flocculent. The annulus is well up on the stipe and is 

 membranaceous and persistent. The lamellae are white, but 

 appear very dark at maturity of the fungus because of the 

 color of the ripe spores. The lamellae are 6 millimeters broad, 

 both ends obtuse with the margins minutely notched and showing 

 the white color of the gills even at maturity. The basidia are 

 club-shaped, 5.5 by 19 microns. The spores are dark brown, 

 small, elliptic, 2.5 to 3 by 5 to 5.5 microns, often uniguttulate. 



AGARICUS MANILENSIS Copel. 



Agaricus manilensis has a convex, smooth, aquamulose pileus 

 with a disk that is flat and dark brown. It is subfleshy and 

 becomes white toward the margin, where the scales are sparse. 

 The gills are free and rounded toward the stipe, turning from 

 rose to dark brown. The spores are about 7.5 by 4 microns, 

 are obtuse and oblique at the base. The stipe is 5 centimeters 

 high, 2.5 centimeters thick, equal, naked, smooth, and hardly 

 solid. The annulus is fixed, entire, and convex upward. The 

 fungus grows in lawns. 



AGARICUS MERRILLII Copel. 



Agaricus merrillii is a large species, sometimes 10 centimeters 

 high and wide, almost without taste or odor, the pileus is naked 

 or scaly, turning from white to brown, shining, subfleshy, and 

 truncate or with concave apex when young. Sometimes um- 

 bonate in the middle of the depression, when old it is plane, 

 with a horizontal, entire, or incised border, 1 to 2 millimeters 

 broad, derived from the veil. It has about 250 gills that are 

 crowded, 5 millimeters deep, subacute at the margin, salmon- 

 colored when the veil ruptures, flnally turning black brown. 

 The spores are minute, uninucleate, 6 by 3.5 microns. The 

 veil ruptures late. The annulus is high up, white on both sides, 

 floccose without, very lacerate and pendent. The stipe is some- 

 what contracted toward the top, abruptly enlarged at the base, 

 solid or nearly so, and whitish or turning brown outside and 

 inside. This species grows terrestrial under trees. (Fig. 18). 



AGARICUS PERFUSCUS Copel. 



Agaricus perfuscus is characterized by the entire fungus 

 being brown, darkening with age, odorless and with a good 

 taste. The pileus is early expanded, 3 to 4 centimeters wide, 

 undulate, squamulose, subfleshy, with disk slightly depressed. 



