TYLOSTOMATACEAE 153 



Iowa. Iowa tity. Macbride, coll. Ell. ft Ev., X. Amer. Fungi, No. 2734, as T. mammosum. (Path. 

 \ Myc Hub.) 



Kansas. Stockton. Ell. & Ev., Fungi Columbiana, No. 18S8, as 7". pendunadaium. (,1'ath. & Myc. 

 Herb.) 



Tylostoma floridanum Lloyd 



Plates 83 and 119 



We have examined specimens of the type collection of this species from the Lloyd 

 Herbarium. The plants are small and slender; spore sac about 5-7 mm. thick. We 

 find the spores to be spherical to oval or irregular, 4-6 x 4.8-6. 8n, distinctly warted 

 with elongated, irregular warts. Capillitium threads irregular, septate, branched, 

 up to 8.5/i thick with thickened walls. 



Lloyd's description follows (The Tylostomeae, p. 18): 



"Peridium dark castaneous color, with a small, tubular, circular, protruding mouth. 

 Cortex separating imperfectly, particles adhering to the peridium, thickened and sub- 

 persistent below. Stem slender, dark reddish brown, subsmooth, substriate with no 

 trace of scales, white within, hollow with central fibrils. Capillitium subhyaline, some- 

 times wavy [written waxy, in error?] with septa both swollen and even. Spores 5/i, 

 strongly asperate." 



This plant is nearest T. simulans, from forms of which it can hardly be distin- 

 guished. The spores, while warted in about the same way as in T. simulans, show the 

 warts much more clearly in surface view. Other characters mentioned by Lloyd, as 

 slender, dark stem and colored peridium can be nearly or quite matched in simulans 

 or mammosum. Lloyd has described another species, T. pygmaeum, from Florida 

 (The Tylostomaceae, p. 16, pi. 78, figs. 3, 4) which, from the description, differs from 

 T. floridanum only in the unimportant character of color. 



Illustrations: Lloyd. Myc. Works, pi. 80, figs. 1 and 2. 



Florida. Lloyd. (Lloyd Herb., type, and U. N. C. Herb.) 



Tylostoma verrucosum Morg. 



Plate 119 



This rare species has been found but a few times. Morgan described it from Ohio, 

 and Lloyd reports it from Texas (Long, coll.). We have seen authentic specimens 

 collected by Lloyd and determined by Morgan, and find the spores to be spherical to 

 irregular, distinctly warted, 4-6^ thick. Capillitium threads up to 8^ thick, irregular, 

 swollen at septa, walls irregularly thickened. 



The original description by Morgan is as follows (Journ Cin. Soc. Nat. Hist. 12: 

 164): 



"Peridium depressed-globose, thickish, becoming firm and rigid, with a dense 

 brown cortex of minute persistent scales and warts ; the mouth small, circular, prominent, 

 entire. Stipe long, slender, with a surface of brown lacerate scales, internally white, 

 with a central pith of long loose fibers; the mycelial bulb large, irregularly depressed- 

 globose. Threads of the capillitium long, slender, about as thick as the spores, hyaline, 

 branched; spores irregularly globose, minutely warted, pale brown, 5-6/u in diameter. 



