PORPHYROSPOR.E 
117 
S. semi-globata (semi, half; globus, a ball—hemispherical). 
Plate IX. 9. 
P. about 1 in., hemispherical, glutinous, pale yellow. 
G, adnate, very broad, greyish, clouded with black. S. 3-5 
in., slender, viscid, hollow, yellowish. R. imperfect, soon 
stained with the purple-brown spores. Common in pastures, 
except in win., on dung of horses and oxen, solitary or 
gregarious. 
S. stercoraria ( stercus , dung) much resembles the above 
and affects similar situations, but is “ usually larger, and 
distinguished more especially by the distinct pith in the 
stem, by the portion of the stem below the ring being at 
first flocculose, and by the much larger spores” (Massee). 
PILOSACE 
(Gr . pilos, felt; sakos, a garment—from the pelliculose pileus) 
P. Algeriensis (first observed in Algeria). 
P. 3-4 in., fleshy, snow-white. G. distant, free, very 
narrow, dark purple. 5 . 2-3 in., stout, solid, white. There 
is only one British record. It is probable that a form of 
Agaricus campestvis was mistaken for it. 
AGARICUS 
(P salliota of some authors) 
(The origin of the term Agaricus is peculiar. It is said to 
be derived from Agaria, a region of Sarmatia, Poland. 
Psalliota from Gr. psalion, a ring—in reference to the very 
evident ring.) 
A. campestris (campus, a plain or field), “The Common 
Mushroom.” Plate IV. 1. 
P. 3-6 in., globose, then convex, dry, silky, whitish, the 
floccose epidermis projecting beyond the gills. P. thick, 
white, more or less stained with reddish-brown. G. free, 
