This
classic European species was first named and described by Linnaeus (1753), and
is often called the "black trumpet" in English, or trompette de la
mort in French.
It is
deeply vase-shaped, and its surfaces are dark gray to black. As the mushrooms
mature, the outer surfaces develop a whitish to cream-colored sheen, resulting
from the maturation of spores.
Recent
research by Matheny and collaborators (2010) supports the idea that Craterellus
cornucopioides does not occur in North America, where it is replaced by
Craterellus fallax in eastern North America, and a probably as-yet unnamed
species (Craterellus species 01) on the West Coast.
The genetic
difference between Craterellus cornucopioides and Craterellus fallax is
paralleled by a morphological difference (which is good news for those who get
lost and don't know which continent they're standing on): the spore print of
the former is white to creamy, while the latter species has a pinkish yellow
spore print.
Ecology:
Mycorrhizal with hardwoods and, less frequently, with conifers; growing
scattered, gregariously, or (usually) in tightly packed clusters, often in
mossy areas; summer and fall; widely distributed in Europe. The illustrated and
described collection is from northern Italy.
Fruiting
Body: 3-5 cm wide; 5-9 cm high; without a clearly defined cap and stem; tubular
at first, becoming deeply vase-shaped; the upper edge rolled under when young
and often partly rolled under in maturity; thin-fleshed.
Upper/Inner
Surface: Black to dark gray; finely roughened or finely scaly with dark fibers
and scales over a paler, grayish or grayish brown base color.
Under/Outer
Surface: Smooth or very shallowly wrinkled; dark gray to black, with a whitish
bloom.
Flesh: Thin
and brittle; blackish.
Odor and
Taste: Taste mild; odor not distinctive, or somewhat sweet and fragrant.
Spore
Print: White to creamy.
Microscopic
Features: Spores 11-14 x 7-9 µ broadly ellipsoid; smooth; hyaline and
uniguttulate in KOH. Basidia to 75 µ long; 2-sterigmate. Elements of upper
surface cylindric; septate; hyaline to brownish; 5-20 µ wide. Clamp connections
absent.
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