1924] 
BURT—THE THELEPHORACEAE OF NORTH AMERICA. XIII 5 
Fung. 6: 521. 1888; Engl. & Prantl, Nat. Pflanzenfam. (1:1**): 
127. 1898. 
Fructification urn-shaped or top-shaped, hard, corky; hymen- 
ium even, lateral. | 
In adopting the name Hypolyssus and defining it anew, Berke- 
ley stated, loc. cit., Аз Persoon's genus Hypolyssus is altogether 
effete, and its characters are very like those of the plant before 
us, I have thought it advisable to restore it.” 
This genus differs from Craterellus by not having the fructifi- 
cations at all fleshy апа by their becoming hard when dry. 
1. Hypolyssus Montagnei Berkeley, Hooker's London Jour. 
Bot. 1: 139. pl. 6, f. 1. 1842; Sacc. Syll. Fung. 6: 521. 1888; 
Engl. & Prantl, Nat. Pflanzenfam. (1:1**): 127. text f. 70 E. 
1898. Plate 1, fig. 4. 
An Hypolyssus foetidus Massee, Jour. Bot. 30: 197. pl. 326, 
f. 8—5. 1892; Басс. Syll. Fung. 11: 115. 1895? 
Type: in Kew Herb. probably. 
Fructifications gregarious, dirty white, 1-2 cm. high, hard 
when dry, solid, turbinate or urn-shaped, the apex sterile, convex 
at first, at length slightly depressed; stem slender, central, . 
curved, shorter than the pileus when mature; hymenium covering 
the outside of the fructification with the exception of the apex, 
even or nearly so; spores hyaline, even, 3-4 џ in diameter, none 
seen attached to padis 
Fructifications 1-2 em. high, 2-7 mm. in diameter. 
On rotten wood. Mexico, Central America, Guadeloupe, and 
South America to Bolivia. February in Mexico, July in Bolivia. 
The fructifications are hard when dry but soften when moist- 
ened so that they may be readily sectioned; Craterellus tazophilua 
is of somewhat similar form but more fleshy consistency. In all 
the specimens cited below the hymenium is too deteriorated to 
show the basidia in my preparations. Н. foetidus occurs on the 
island of St. Vincent in the region of H. Moníagnei and was 
distinguished from the latter by Massee by fetid odor and 
rugulose hymenium, but there is no observation on record yet as 
to absence of odor for Н. Montagne. Mycological explorers 
rarely note such data. 
