42 ' ‘Tutetry-sixtH REpoRT ON THE STATE MuSEUM. 
cent.. The spores in our species are quite small, elliptical or r aaellepe 
tical in outline. and do not vary greatly in dimensions in the different — 
species. = vie | 
Fries groups the European species in two sections which he names 
««Edules,” and “Minores.” The former group includes the larger 
and more fleshy species. Several of them are edible and have long Ms 
been used as an article of food. No representatives of the“ Minores” i 
have yet been found in our State. Of the ‘“‘ Edules” we have several 
species which may again be divided into two sub-groups depending on 
their usual habitats. Those which grow in open places, manured 
grounds or cultivated fields generally have a thicker, firmer pileus and 
a comparatively shorter stouter stem than those that grow in copses 
groves and woods. It is among these especially that the most notable 
succulent “mushrooms” are found. 
SYNOPTICAL TABLE OF THE SPECIES. 
Growing in fields, open places or cultivated grounds........ oe 2 
2. liamelle at first whitish or pallid..... .s...022..0260 AAs 3 
2. Lamelle at first pinkish or flesh colored................ A. campestris. 
Sauamelice Narrow, ‘Stem Sli 1s pce 1s \ciot ie wiclesete ...- A. Rodmani, 
3. Lamellze broader, stem stuffed or hollow........... A, arvensis. 
1. Growing in woods, copses or ZroveS...........+..0e00e Dose 4. 
ESE D ON MDE US. Sue prakcrace tol s wie lsye ie alae 2 Stays. Gh eine wine Sloe wraeiere a 
Pes SEEM NOt DOUS (:).\2 sb socks sae d lo. ced ins eR 6 
PEL MoUS SNOOLD 4.6). canis ittnictd cette 6 balers hole Sid are miaeioiee A. silvicola, 
Dep AICUR AGI ANTULOSG:/ sre ieee paibiols) ine, ei clavalege ala cla = mies A. placomyces. 
6. Pileus two inches or more in diameter......... A. silvaticus.. 
6, Pileus less than two inches in diameter ........ A, diminutivus, — 
AGARICUS CAMPESTRIS, L. 
Common Mushroom. Edible Mushroom. Field Agaric. 
Pileus at first hemispherical or convex, then expanded with de-— 
curved mar gin or nearly plane, smooth silky floccose or hairy squamu- — ae 
lose, the margin extending beyond the lamelle, the flesh rather thick,- — 
firm, white; lamellz free, close, ventricose, at first delicate pink or flesh 
color, then blackish-brown, subdeliquescent ; stem equal or slightly 
thickened toward the base, stuffed, white or whitish, nearly or quite 
smooth; annulus at or near the middle, more or less lacerated, some- 
times peericeasni ; spores elliptical, .00025 to .0003 in. long, .00016 to 
0002 in. broad. 
Plant 2 to 4 in. high, pileus 1.5 to4 in. or more broad, stem 4 to 8 
lines thick. 
Fields, pastures, manured grounds, mushroom beds, etc. 
This is the well-known “ edible mushroom,” aspecies which is more — 
extensively cultivated and more generally used as food than any other. — 
With proper attention to its characteristic features there is no a ht! ye ; 
