154 THE GASTEROMYCETES OF THE UNITED STATES AND CANADA 



"Growing on the ground in rich soil in woods." 



Lloyd says that the species is very close to T. squammosum of Europe, from which 

 it differs in verrucose cortex and more robust habit. 



Illustrations: Lloyd. Myc. Works, pi. 76, figs. 3-5. 



Morgan. Journ. Cin. Soc. Nat. Hist. 12: pi. 16, fig. 2. 

 Petri. Ann. Myc. 2: p. 424 (text fig.). 1904. 



Ohio. Lloyd, coll. (N. Y. Bot. Gard. Herb.). 



Tylostoma Finkii Lloyd 



Plates 85 and 119 



Spore case depressed-globose, 0.7-1 cm. high by 0.9-1.4 cm. wide, color when fresh 

 ochraceous to tan where not covered with sand, fading when dry to a mouse-gray with a 

 tint of salmon (under the sand) ; outer peridium consisting of a rough sandy cortex which 

 slowly wears away above and is even more persistent and somewhat thicker below where 

 it may appear with an obscure margin like a cup after the wearing away of most of the 

 upper part; mouth or mouths (1-4 in number) circular or elongated and irregular, 

 elevated (up to 0.8 mm. high) or scarcely so, concolorous with the peridium or slightly 

 lighter, the margin eroded or nearly smooth, and not surrounded by a fibrillose pad. 

 Stem 1.8-2.7 cm. long by 3-3.6 mm. thick when fresh, 1.5-3.2 mm. thick when dry and 

 then with longitudinal furrows, of equal diameter throughout or slightly tapering toward 

 the base which ends in a small myceloid swelling; surface minutely and evenly lacerate 

 scaly (the scales concolorous with the body of the stem and running horizontally around 

 it and often with remnants of the gray, myceloid, outer peridium attached; context 

 solid except for a small central strand of loose fibers; collar irregular, about 1 mm. 

 distant from the dry stem, in contact with it when fresh, concolorous with the top of 

 the stem. 



Spores very minute, 2-3/i thick, smooth, spherical or slightly angled with a minute 

 mucro, spores cinnamon color (Ridgway) in mass, pale under the microscope. Capil- 

 litium threads lighter colored than the spores, irregular, wavy, sparingly septate, 3.8;u 

 thick, considerably swollen at the joints and at the ends which may be up to 12p thick _ 



In one of our plants there are four scarcely elevated mouths in a row and all elliptic 

 to elongated, in another there are two circular mouths and in two others there is a single 

 circular mouth. 



As T. Finkii (Lloyd; Myc. Notes, p. 1169, pi. 225, fig. 2307) agrees with our plant 

 in its very characteristic spores, distinctly smaller than in any other species except in 

 T. Longii, described by Lloyd as a form of T. albicans, which is white and has large 

 rough spores, and as there are no essential disagreements we refer our plants to it. The 

 multiple and somewhat elongated mouths in some of our specimens point to group 6 

 of Lloyd's Tylostomeae as its proper location. Lloyd's specimens having only single 

 tubular mouths, he refers them to group 1. Tylostoma kansense and T. americanum 

 (Lloyd thinks these the same) and the two new species proposed by Miss White (T. 

 gracile and T. minutum) that if good might fall in the same group, are all easily sep- 

 arated by their much larger spores. In T. Lloydii Bres. (in Petri, Ann. Myc. 2: 423. 

 1904) the spores are smooth and small but distinctly larger than in the present species, 

 and the cortex is said to separate perfectly above, the mouth to be fibrillose until 

 weather-worn. We have looked through the species represented in the Schweinitz 

 and Curtis Herbaria, as well as in Washington and New York, and find nothing that 

 agrees with our plant. 



