View A43-1112-1979-eng.pdf

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Key
RUSSULA
1. Lamellae alternating long and short 2
1. Lamellae equal 5
2. Flesh becoming black in age or when wounded 3
2. Flesh unchanging, fruit body white R. delica
3. Flesh first reddening, then blackening 4
3. Flesh blackening without any intermediate reddening R. sordida
4. Lamellae broad, subdistant R. nigricans
4. Lamellae narrow, very crowded R. densifolia
5. Spore deposit white or cream 6
5. Spore deposit yellow 13
6. Taste mild 7
6. Taste acrid 9
7. Pileus green or greenish to brownish on disk R. aeruginea
I. Pileus red or brownish red 8
8. Pileus dark crimson to maroon, sometimes paler to yellowish, dry;
stipe usually red R. mariae
8. Pileus dull brownish red, drying greenish toward margin;
stipe white staining yellowish to brownish at base R. vesca
9. Lamellae forked throughout; pileus pinkish to purplish becoming
olivaceous or greenish R. variata
9. Lamellae equal, or forked rarely or only near the base 10
10. Pileus yellowish to brownish yellow; odor fetid R. foetens
10. Pileus more or less red, no odor 11
II. Pileus uniformly red or fading to whitish 12
11. Pileus red on margin, olivaceous to purplish in center, small R. fallax
12. Pileus mostly l-2Vi in. broad; flesh white under the pellicle R. fragilis
12. Pileus mostly 2-5 in. broad; flesh red under the pellicle R. emetica
13. Taste acrid 'T.Z.. 14
13. Taste mild 17
14. Pileus yellow to orange R. aurantiolutea
14. Pileus red 15
15. Spores deep ochraceous; margin of pileus striate;
stipe often tinged red R. tenuiceps
15. Spores pale yellow, margin even or very slightly striate 16
16. Pileus large, bright, shining, red to purplish red or orange-red, fragile;
taste slightly acrid; stipe often tinged reddish R. paludosa
16. Pileus medium size, rosy red, rather firm; taste very acrid;
stipe never red R- veternosa
17. Pileus yellow 18
17. Pileus not yellow 19
18. Lamellae becoming gray on drying R- flava
18. Lamellae unchanging R- lutea
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