Lepiota castanea
Spores fusiform, spurred; 8.7–
11.1  ×  4.3–4.8 microns.
Growing from soil under pine; late summer. White spore print.
Lepiota castanea is extremely poisonous, containing the same
toxins (
amatoxin) as the deadly Amanita mushrooms, such as the
death cap and the destroying angel.
“Lepiota castanea Quélet
CAP 1–3 cm wide, acutely conical becoming bell shaped and finally
depressed; disc raised, velvety or with fibrous scales, cinnamon brown;
margin incurved often becom­ing undulated and uplifted, at first with
membrane hanging from the margin, colored like the disc, with fibrous
scales; flesh white, often becoming rusty in age or when bruised. GILLS
free, white or buff, often becoming rusty in age or when bruised, close,
edges even, in one to three tiers, often not reaching the margin. STALK 2.8–
6.5 cm long, top 1–3 mm thick; wider at the base; stuffed becoming hollow;
above fibrous, white; below with scattered fibrous or woolly cinnamon
brown scales; white with an orange wash at the base and sometimes
between the scales; becoming rusty when bruised. RING not persistent.
ODOR sweet, unpleasant, or not remarkable. TASTE not re­markable. HABIT
scattered or solitary. HABITAT humus under conifer. EDIBILITY potentially
lethal–has amanitins.”
Richard E. Sieger, Puget Sound Mycological Society
copyright © January 17, 2007

Trial Key to Pacific Northwest Lepiota and Allies