1919] 



ZELLER AND DODGE — ARCANGELIELLA, GYMNOMYCES, MACOWANITES 53 



I 



8-10 n long; spores spherical, "honey-colored," echinulate, 

 11-15 ft in diameter, seldom pedicellate, exospore about 2 n 



thick. 

 In soil under Eucalyptus. California and Ecuador. Spring 



and autumn. 



Lagerheim states in the original description of Hydnan- 

 gium Soderstromii that it has no cystidia, but a study of the 

 cotype in the Lloyd Museum reveals both clavate and mucro- 

 nate forms. The specimen from California has the charac- 

 teristic cystidia of the Ecuador specimens and a stout, per- 

 current columella with few lactiferous ducts. The chief dis- 

 tinction between this species and A. Borziana and A. caudata 

 is in the peridial characters. 



Specimens examined: 

 California: Ingleside, San Francisco, N. L. Gardner (Univ. 



Cal. Herb., 209, in part, and Zeller Herb., 1643). 

 Ecuador: Quito, Panecillo, G. Lagerheim, cotype (in Lloyd 



Mus., 6395) ; L. Mille (in Lloyd Mus., 12127). 



EXTRA-LIMITAL SPECIES 



The only reported species of this genus which has not been 

 found in North America is the type of the genus. 



1. Arcangeliella Borziana Cavara, Nuov. Giorn. Bot. Ital. 



N. S. 7 : 126. 1900 ; Saccardo & Sydow in Sacc. Syll. Fung. 



16 : 256. 1902. 



Illustrations: Cavara, Nuov. Giorn. Bot. Ital. N. S. 7: pi. 



7. f. 1-15. 



Fructifications hypogaeous, gregarious, globose to irregu- 

 lar, oblong, often bilobed, 0.6-0.8x1.5-2.0 cm. in diameter, 

 light, nearly smooth; peridium very thin, 70 n thick, fragile, 

 either lacking or lacerate near the base, spotted with yellow, 

 slightly lactiferous; gleba light rose-colored, lactiferous; col- 

 umella percurrent, very lactiferous; base attenuate, sterile; 

 latex white, sweet, abundant; basidia conspicuous, strongly 

 exerted above the blunt paraphyses ; sterigmata 3-4, acicular, 

 long; spores spheroidal to amply ellipsoidal, dilute yellowish, 

 echinulate, 8-10 n in diameter; cystidia conical, acute. 



In fir forests. Vallombrosa, Etruria, Italy. Summer. 



