REVISION OF THE Ховтн AMERICAN HYDNACEAE 119 
are occasionally met with in other species of this genus but do 
not seem to warrant varietal distinction. Тһе Macoun and Bur- 
lingham specimens are of this type. 
4. Hericrum Erinaceus (Bull) Pers. Com. Fung. Clav. 159. 
1797 
Hydnum Erinaceus Bulliard, Hist. de Champ. de la France, 304. 
A36 179г. 
Матта cordiformis Scopoli, Pl. Subterran. pl. ro. 
Medusina patula Chevallier, Fl. Gen. des Env. de Paris, t: 379. 
1826. 
Dryodon Erinaceus Quélet, Ench. Fung. 102. 1886. 
Plant body а more or less tuberculous mass narrowed behind 
to a comparatively small point of attachment, projecting usually 
horizontally from the substratum and terminating outwardly in long 
pendent teeth, in front view usually more or less heart-shaped, 
shining white throughout, becoming ochraceous to reddish-brown 
in drying; body of the tubercle subglobose to subpyriform, or 
compressed vertically, 5-10 cm. long, 3-12 cm. wide, 2-4 cm. 
thick, usually pendent, sometimes ascendant, solid, or more or less 
porous, or sometimes a mass of closely anastomosing branches, 
the upper surface more or less fibrillose ; substance fleshy-fibrous, 
hygrophanous or dry ; teeth long, slender, terete, tapering, acute, 
subflexuose to straight, dependent from the front of the tubercle, 
usually 2-3 cm. long by 1-2 mm. wide, at the top the teeth usually 
merge insensibly into the fibrils of the upper surface; spores 
globose to subovoid, uniguttulate, white, smooth, 4.5-5 by 
5-6 p. 
Нав.: On living oak, locust or beech, also occasionally on 
dead trees. May—Nov. 
Rance: New York, Southwick, Clinton; New Jersey, Elis, 
Murrill; Pennsylvania, Rau, Banker ; Delaware, Commons ; 
Maryland, Curtis ; Virginia, Griffiths, Murrill ; Georgia, Harper ; 
Florida, Martin; Alabama, Skehan ; Ohio, Lloyd, Ricksecker, 
Quiroga; Indiana, Brown, Underwood, Arthur ; Michigan, Zang- 
don ; Wisconsin, Calkins ; Missouri, Demetrio ; Kansas, Cragin ; 
Louisiana, Langlois ; Mexico, Smith. 
Icon. : Boccone, Mus. di Piante Rare, р/ 307.* 1697. Bul- 
liard, /ос. cit. ; Krombholz, p/. 5r. f. 1-3; Cordier, Les Champ. 
* The two upper left-hand figures, not numbered. 
