1919] 



ZELLER AND DODGE — ARCANGELIELLA, GYMNOMYCES, MACOWANITES 57 



columella; gleba covered above, exposed and decurrent, ad- 

 nate or sinuous below; cavities globose to irregular; septa 

 homogeneous; basidia 2-spored; spores spheroidal to ovate, 

 hyaline, tuberculate or echinulate. 



This genus was first described as Macowania by Kalch- 

 brenner, in 1876, but since this name was preoccupied by 

 Macowania Oliver (1870), DeToni changed the name to Maco- 

 wanites, retaining Kalchbrenner as the author. 



The genus Macowanites Kalchbr. is an extremely close ally 

 to the genus Arcangeliella, differing mainly in the absence of 

 lactiferous ducts. The spores of Arcangeliella are usually 

 ellipsoidal and tinted, while those of Macowanites are spher- 

 ical and hyaline. This, however, does not hold for Arcangel- 

 iella Soderstromii, which has spherical spores. 



The fact that the two known species of Macowanites are 

 from such widely separated localities would indicate the prob- 

 ability that this genus is much more widely distributed than 

 at present known. 



1. Macowanites echinosporus Zeller & Dodge, sp. nov. 



Fructificationes subglobosae vel irregulares, lxl-5 cm. diametro, 

 laeves, subtiliter "salmon-colored" (Gardner) recens lectae, "tawny 

 olive" (Ridgway) servatae; peridium tenue, 90-120 /* crassitudine, 

 in dimidio superiore fructificationis instructum, hyalina, pseudo- 

 parenchymate parallela cum superficie fructificationis confectum; 

 stipes eodem colore, 5 mm. longitudine, 2 mm. diametro, stuposus, 

 tenuibus hyphis hyalinis contextus; basis sterilis, proiectura conica 

 stipitis, sed non ut columella in glebam proiciens; gleba superne 



tecta, inferne apert-a, non decurrens sed circum stipitem sinuata, 

 eodem colore ut peridium; locelli minuti, irregulares; septa 60-80 /* 

 crassitudine, hyalina, pseudoparenchymate confecta, non scissilia; 

 cystidia infrequentia, clavata, apiculata, 9-10x20-24 /*, hyalina; 

 basidia parva, 5-8x18-22 /z, cylindrata vel clavata, bi- vel tetraspora, 

 hyalina; sporae sphaeroideae vel late ovatae, hyalinae, appendicu- 

 latae, 6-8 p diametro, uno cum vacuolo, minute sparsimque echinu- 



latae. 



Habitat in terra sub Quercu agrifolia. California. Mart. 



Type : in Univ. CaL Herb, and Zeller Herb. 



Fructifications subglobose to irregular, lXl-5 cm. in diam- 

 eter, even, smooth, very delicate salmon-color (Gardner), in 

 alcohol tawny olive ; peridium thin, 90-120 /* thick, extending 

 over the upper half of the fructification, consisting of a 





