1919] 



BURT THELEPHORACEAE OF NORTH AMERICA. XI 



263 



On fallen branches and old logs. Florida, Louisiana, Jamaica, 

 West Indies, and Venezuela. August to November. 



When examined by the naked eye or with a magnifying glass, 

 M. flava is not distinguishable from a Hydnum, but when sections 

 are examined with the compound microscope, the hymenium is 

 found to be a plane surface pierced here and there by the pro- 

 truding fascicles of hyphae. The spore dimensions are those 

 of spores which were on the surface of the hymenium. A 

 specimen in the collection from Florida has a stem 1 mm. long, 

 but the spores are 13X6 J m and other characters such that I 

 refer the collection to M . flava. 



Fig. 5. M . flava. Section of fructification, a, showing hyphal 

 fascicles, /, X 90; spores, s, X 870. 



Specimens examined: 



Florida: Cocoanut Grove, R. Thaxter (in Mo. Bot. Gard. Herb., 

 43985). 



Louisiana: St. Martinville, A. B. Langlois. 



Cuba: C. Wright (in Curtis Herb.) ; Guantonamo (in Weir Herb., 

 10849) ; Pinar del Rio San Diego de los Banos, N. L. Britton, 

 F. S. Earle & C. S. Gager, 6823 (in N. Y. Bot. Gard. Herb., 

 Burt Herb., and Mo. Bot. Gard. Herb., 56075); Puerto 

 Principe, F. S. Earle, 812. 



2. M. brunneoleuca (Berk. & Curtis) Patouillard, Myc. Soc. 

 Fr. Bui. 16: 181. 1900; Duss, Fl. Crypt. Antilles Fr. 233. 1903. 



Hydnum brunneoleucum Berk. & Curtis, Linn. Soc. Trans. 22: 

 129. 1857; Linn. Soc. Bot. Jour. 10: 325. 1868; Sacc. Syll. 



