This data set includes descriptions of hypothetical samples corresponding to 23 species of gilled mushrooms in the Agaricus and Lepiota Family (pp. 500-525). Each species is identified as definitely edible, definitely poisonous, or of unknown edibility and not recommended. This latter class was combined with the poisonous one. The Guide clearly states that there is no simple rule for determining the edibility of a mushroom.

The mushroom data is drawn from the Audubon Society Field Guide to North American Mushrooms (1981). G. H. Lincoff (Pres.), New York: Alfred A. Knopf and donated by Jeff Schlimmer. There are over 8,000 instances. Mushrooms are described in terms of their physical characteristics, classification, and whether poisonous or edible.

Attribute Information:

• cap-shape: bell=b,conical=c,convex=x,flat=f, knobbed=k,sunken=s
• cap-surface: fibrous=f,grooves=g,scaly=y,smooth=s
• cap-color: brown=n,buff=b,cinnamon=c,gray=g,green=r, pink=p,purple=u,red=e,white=w,yellow=y
• bruises?: bruises=t,no=f
• odor: almond=a,anise=l,creosote=c,fishy=y,foul=f, musty=m,none=n,pungent=p,spicy=s
• gill-attachment: attached=a,descending=d,free=f,notched=n
• gill-spacing: close=c,crowded=w,distant=d
• gill-size: broad=b,narrow=n
• gill-color: black=k,brown=n,buff=b,chocolate=h,gray=g, green=r,orange=o,pink=p,purple=u,red=e, white=w,yellow=y
• stalk-shape: enlarging=e,tapering=t
• stalk-root: bulbous=b,club=c,cup=u,equal=e, rhizomorphs=z,rooted=r,missing=?
• stalk-surface-above-ring: fibrous=f,scaly=y,silky=k,smooth=s
• stalk-surface-below-ring: fibrous=f,scaly=y,silky=k,smooth=s
• stalk-color-above-ring: brown=n,buff=b,cinnamon=c,gray=g,orange=o, pink=p,red=e,white=w,yellow=y
• stalk-color-below-ring: brown=n,buff=b,cinnamon=c,gray=g,orange=o, pink=p,red=e,white=w,yellow=y
• veil-type: partial=p,universal=u
• veil-color: brown=n,orange=o,white=w,yellow=y
• ring-number: none=n,one=o,two=t
• ring-type: cobwebby=c,evanescent=e,flaring=f,large=l, none=n,pendant=p,sheathing=s,zone=z
• spore-print-color: black=k,brown=n,buff=b,chocolate=h,green=r, orange=o,purple=u,white=w,yellow=y
• population: abundant=a,clustered=c,numerous=n, scattered=s,several=v,solitary=y
• habitat: grasses=g,leaves=l,meadows=m,paths=p, urban=u,waste=w,woods=d

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