Key to Stinkhorn Fungi

1. Distinct head present, lower margin of head free from stalk, head covered with olive brown slime;
    stalk whitish or reddish (in part); whitish to pinkish cup (volva) at base of stalk
    2. Stalk whitish ..............................................................................................................Phallus ravenelii

    2. Stalk reddish (at least in part) ....................................................................................Phallus rubicundus

1. Distinct head lacking; olive-brown slime merely covering a portion of the upper stalk;
    stalk pinkish-red to orangish (or white); sac-like volva at base of stalk

    3. Stalk pinkish red to pinkish-orange, gracefully tapered from middle toward apex; slimy spore
        mass covering upper 1/3 or ½ of stalk (up to 6 cm) ....................................................Mutinus elegans

    3. Stalk white to pink to pinkish-red, tapered abruptly at apex; slimy spore mass covering only the upper
        ¼ or less (2-3 cm) of the stalk......................................................................................Mutinus caninus