152 THE GASTEROMYCETES OF THE UNITED STATES AND CANADA 



Stem 1.5-3 cm. long, 3^1 mm. thick when fresh, 1.5-2.5 mm. thick when dry, the 

 base slightly enlarged by the soft, white, cottony mycelium which brings up a little 

 earth; surface often nearly covered with reddish brown lacerate scales which wear away 

 gradually on exposure and in age are represented only by the inherent parts; in some 

 plants of the same colony the reddish brown cortex instead of being lacerated may be 

 more even and adhesive and form a cracked and mottled outer layer of the stem which 

 may persist for a long time; color under the scales buffy brown, becoming dull dark 

 brown with age; body of the stem longitudinally striate when dry, deeply inserted in 

 the outer peridium and on drying shrinking away from the peridium and leaving the 

 usual collar which may or may not have a thin, free margin. Context of stem white, 

 fibrous, brittle when dry, containing a central cylinder that is partly filled with delicate, 

 silky fibers. 



Spores (of No. 87) globose to subglobose, yellowish cinnamon in color, closely 

 set with thick, coarse, pale warts, 4.2-6 x 4.5-6.8/i thick counting the warts, which are 

 up to a fraction over lju long; in KOH solution appearing spinulose with a hyaline 

 material between the spines. Capillitium threads buff, moderately branched, septate, 

 somewhat swollen at the joints, 4.5-6.5/* thick. 



This species is reported by Lloyd from Ohio and Texas. It may be considered the 

 southern form of T. mammosum, from which it is separated by the more persistent outer 

 peridium and by the strongly warted spores. There is also much less tendency to a 

 dark mouth area, though in our No. 87 there is a somewhat darker diffuse area around 

 the mouth. For a comparison with T. floridanum see that species. The present 

 species is peculiar in the paleness of the warts on the spores and their vagueness in 

 surface view. This seems to be due to the abundance of the nearly colorless amorphous 

 material which makes up the greater part of the warts and in places fills the space 

 between them. 



Examination of T. mammosum in Ellis and Everhart's North American Fungi, 

 No. 2734, shows it to be exactly like the Chapel Hill plants. The spores are 4-6/u 

 thick, distinctly rough, subspherical; capillitium threads 3-6yu thick, thin- to thick- 

 walled, swollen at the septa. Their T. pedunculatum (Fungi Columbiani, No. 1888) is 

 not different. Spores 4-6/* thick, subspherical, distinctly rough. Capillitium threads 

 3-7/x thick, thin- to thick-walled, swollen at the septa. The T. mammosum of Curtis' 

 list is probably this species. 



Illustrations: Lloyd. Myc. Works, pi. 79, figs. 2 and 3 



87. On a dry, pebbly hillside among cedars, April 1903, and April 1904. 

 5930. Same location as No. 87, Dec. 9, 1922. Spores yellowish cinnamon, subspherical, distinctly 



warted, 5.5-6.5/j thick. 

 7134. In grass under cedars, Sept. 22, 1923. Capillitium threads swollen at the joints. Spores 



4.4-5. 1m thick, distinctly warted. 

 Also Nos. 5913, 7504, 7554. 



Salem. Schweinitz, coll. (Curtis Herb., as T. bramale). 

 Asheville. Beardslee. 



South Carolina. North Island. Coker and party, colls. (U. N. C. Herb.) . 



Florida. Gainesville. Weber, coll. (U. N. C. Herb.). Spores rather pale, coarsely warted, 4.2-6ji 



thick. 

 Alabama. Peters, coll. (Curtis Herb., as T. mammosum). 



