434 White: Tylostomaceae of North America 



the thin inner peridium : mouth raised, fimbriate, collar irregular, 

 inconspicuous, close : stem white within and fibrillose stuffed, 

 brownish and lacerate scaly outside, with a small mycelial bulb 

 at the base, 1.5-5 cm. long, 5 mm. in diameter: capillitium light- 

 colored, almost white, hyaline, freely septate, swollen at the joints, 

 4_8 a wide : spores subglobose, dark ferruginous, verrucose, some 

 short pediceled, 3-6// in diameter. (PI. 34, f. 7-9.) 



Exsicc. : Ravenel, Fungi Car. Ex. 5 : 80 ; Ravenel, Fungi Am. 



Ex. 724. 



New York, Peck ; South Carolina, Ravenel ; North Caro- 

 lina, Curtis, Wood ; Alabama, Earle ; Texas, Wright ; Wyom- 

 ing, Nelson ; New Mexico, Wriglit ; Colorado, Cockerell ; Kan- 

 sas, Kellerman. 



15. Tylostoma punctatum Peck, Bull. Torr. Club, 23 : 419. 1896 



Peridium subglobose, 1 — 1 .3 cm. high, I— 1 .3 cm. in diameter: 

 outer peridium scaly, retreating, leaving a ring around the base of 

 the peridium : inner peridium thin, whitish, covered with irregular 

 shallow pits : mouth raised, lacerate, irregular, rather large : collar 

 indistinct, close : stem equal, darker than the peridium, lacerate 

 scaly, with a small mycelial bulb, white within, hollow or stuffed, 

 2-3 cm. long, 3 mm. in diameter : capillitium whitish, hyaline, 

 branched, septate, much swollen at the joints, 4-8 fi wide : spores 

 subglobose, yellowish cinnamon-colored, minutely verrucose, some 

 short pediceled, 3-5 fi in diameter. (PI. 34, f. 1-3.) 



Kansas, Bartholomezv ; Nebraska, Webber ; Washington, 



D. C, Braendle. Growing in sandy pasture land. 



Species not seen 



16. Tylostoma semisulcatum Peck, Bull. Torr. Club, 22 : 



209. 1895 



6-8 



lines broad, 9 lines long, glabrous above, ferruginous-tomentose 

 on the lower half: osteolum entire : stem equal, about 2 inches 

 long, even and glabrous or but slightly furfuraceous on the upper 

 part, the lower part longitudinally sulcate, whitish : spores ferru- 

 ginous, globose, .00016 to .0002 in. broad : threads of the capil- 

 litium not septate. 



" Sandy soil, Nevada. Collected by C. W. Irish, communi- 

 cated by T. Taylor. 



" This species is separated from T. mammosum Fr. by its peri- 



