Hydnum repandum (See Plate Facing Page 103)

Cap or Pileus - Fleshy, fragile, moist, smooth or somewhat scaly in mature specimens. Variable in colour ; light red, pale buff, or rusty yellow. Convex, plane, or deeply concave by the stem becoming hollow. Margins often wavy. 1-4 inches broad.

Teeth or Aculei - Pointed, whitish, easily detached, leaving little cavities in the fleshy cap.

Stem or Stipe - Stem solid in young specimens, hollow in older specimens. Surface rather rough ; often eccentric. 1-3 inches long.

Flesh - Watery, lighter colour than cap.

Spores - Whitish.

Time - July to October.

Habitat - Woods and open places. Singly or in clusters. The speci-men pictured was found in North Carolina in Februarv.

Section of H. repandum

Section of H. repandum.

Hydnum rufescens (edible) is redder than the typical form, is smaller and more regular.

White Hydnum (Edible)

Hydnum albidum

Cap or Pileus - White, fleshy. 1-2 inches broad.

Teeth or Aculei - White, short.

Stem or Stipe - White, solid, short. 1-2 inches long.

Flesh - White.

Time - June to August.

Habitat - Thin, wet woods.

Re.pan'-dum Ru-fes-cens Al-bl'-dum

Hydnum imbricatum

Cap or Pileus - Brownish, as if scorched. Surface cracked in irregular scales. 6-7 inches wide.

Teeth - Bluish grey.

Stem or Stipe - Short and thick, with irregular scales.

Flesh - Whitish.

H. imbricatum

H. imbricatum.

Time - Late summer. Habitat - Dry woods.

Bear's-head Hydnum (Edible)

Hydnum caput-ursi

Plant - White, fleshy.

Branches and Teeth - Short branches covered with awl-shaped teeth of varying length, pointed toward the ground.

Section of H. caput ursi

Section of H. caput-ursi.

Flesh - White when young, creamy when old.

Habitat - On prostrate or standing tree trunks of decaying deciduous trees. Erect, if on the upper side; ascending or pendulous or both, if on the side of the trunk.

The bear's-head hydnum is very variable in form. The Genus Hydnum essential character is a solid, fleshy body with short protecting branches bearing numerous simple or branched teeth, which may vary in length from one-sixth of an inch to two inches.

Genus Hydnum Spreading Hydnum Edible 261Genus Hydnum Spreading Hydnum Edible 262Bear'S Head (Edible) (Hydnum Caput Ursi, Fries)

Bear'S Head (Edible) (Hydnum Caput-Ursi, Fries).

Coral Hydnum (Hydnum coralloides. Scop.). See p. 97

Coral Hydnum (Hydnum coralloides. Scop.). See p. 97.

Medusa's Head (Edible)

Hydnum caput-medusce

Hydnum caput-medusce- has knob-like branches, with short, distorted teeth above, and long, uniform ones below. At first it is white, but later changes to a smoky or ash colour. The change in colour from white to an ashy tint distinguishes it from H. caput-ursi, which changes to creamy white.

Hedgehog Hydnum (Edible)

Hydnum echinaceus

The hedgehog hydnum is white at first, and then creamy. The branches are knob-like, and bear numerous straight, equal teeth about two inches long.

Coral Hydnum (Edible)

Hydnum coralloides

Plant - Pure white, becoming creamy with age.

Branches and Teeth - Numerous, spreading, angular or flattened. Terminal branches often curved upwards, terminating in a crowded mass of spines. Teeth, 1/6-1/3 of an inch long.

Stem - Short, dividing into branches almost from the base.

Flesh - Tender, white, with agreeable taste.

Time - July to October.

Habitat - On prostrate trees in mountainous or hilly country.

When a mere child, Elias Fries was so attracted by this beau-tiful coral-like fungus, which grew in his native forests in Sweden, that he was led to take up the study of fungi, and later became one of the most prominent students in that branch of botany, and laid the foundation for the study of the Basidiomycetes.