X. EDIBLE AMANITAS AND AMANITOPSIS. 
The Leucosporae, or white-spored agarics, include many gen- 
era and many species that are edible. In a few instances the 
spores have a dirty white or a pale yellow color, and in one case 
a green color, but this is not an edible species. In another they 
quickly assume a pale lilac tint uponexposure to the air and light. 
The esculent species are distributed in about a dozen genera, 
and the following table may be of service in assigning each spe- 
cies to its proper genus: 
| GENERA OF LEUCOSPORE. 
Plant with a membranous sheath at the base of the 
stem, or with superficial warts on the cap, 1. 
Plant destitute of sheath and superficial warts, 2. 
1. Stem furnished with a collar, Amanita. 
1. Stem destitute of a collar, Amanitopsis. 
2. Gills narrow, with a blunt edge, Cantharellus. 
2. Gills with an acute edge, * 3. 
3. Gills somewhat waxy in texture, Hygrophorus. 
3. Gills not waxy in texture, 4. 
4. Cap eccentrically or laterally attached to the stem, or 
stemless, Pleurotus. 
4, Cap centrally attached to the stem, 5. 
5. Gills free from the stem, Lepiota. 
5. Gills attached to the stem, 6. 
6. Stem furnished with a collar, Armillaria. 
6. Stem destitute of a collar, 7. 
7. Stem firm but brittle (breaking squarely), 8. 
4. Stem not brittle, 9. 
8. Gills exuding a white or colored juice where 
wounded, Lactarius. 
8. Gills exuding no juice where wounded, Russula. 
9. Dry plant reviving on the application of 
moisture, Marasmius. 
9. Plant putrescent, not reviving, 10. 
10. Edge of the gills notched or excavated at the 
stem, Tricholoma. 
10. Edge of the gills even, gills mostly decurrent, Clitocybe. 
In the genus Amanita the young plant is enveloped in a mem- 
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