254 



Mycologia 



87. Marasmins androsaceus (L.) Fr. Among needles of lodge-pole pines. 



Tolland. July 16, 1913; July 20, 1914. Nos. 1305,-1936. 



88. Marasmins rotula (Scop.) Fr. On rotten wood. Boulder. Aug. 2, 



1914. Collected by E. Bethel. No. 2836. 



89. Marasmins semihirtipes Peck. Among pine needles in coniferous forests. 



Tolland. July 16, 24, 1903 ; July 20, 1914. Nos. 1304, 1355, 1937. 



90. Mycena pura (Pers.) Fr. On ground in coniferous forests. Tolland 



and South Boulder Canon. July 20, 22, 1914. Nos. 1935, 1962. 



91. Omphalia campanella (Batsch) Fr. On rotten logs of conifers. Golden, 



Tolland, and South Boulder Canon. Alt. 7,000 to 9,500 ft. June 14, 

 17, 19, July 22, 1914. Nos. 1751, 1777, 1790, 1963. 



92. PhoUota acericola Peck. On old logs and on the ground. Tolland. 



July 7, 1914. No. 1866. 



93. Pholiota Jwzveana Peck. On ground in dry coniferous forest. Tolland. 



Jvuie 26, 1913. No. 1256. 



94. Pholiota marginella Peck. On dead coniferous timbers and on sawdust 



heaps. Tolland, South Boulder Canon, and Gilpin sawmill ; altitude 

 9,000 to 10,000 ft. June 26, July i, 8, 1913; June 17, 18, 30, July 2, 

 1914. Nos. 1261, 1274, 1765, 1778, 1779, 1784, 1831, 1847. 



I have referred here the common small yellowish-brown Pholiota 

 so abundant on old coniferous logs in that region. It differs from P. 

 marginata in having smaller, smooth, thin-walled spores and lacking 

 cystidia. The spores of the latter species are much darker due to the 

 heavy wall that is slightly roughened. P. unicolor is a related species 

 with hynienial characters as in P. marginata but with a well developed 

 persistent annulus. The spores of P. marginella measure 6-9 X 3. 5-5 At. 

 Those of the other two species measure 8-10 X 5 /ti. 



95. Pholiota praecox (Pers.) Fr. On the ground in grassy places and in 



open coniferous forests. Tolland, South Boulder Canon, and Lake 

 Eldora. June 25, 26, July 4, 18, 21, 1913 ; June 25, July 19, 1914. 

 Nos. 1253, 1267, 1316, 1343, 1797, 1824, 2308, 2329. 



96. Pholiota vermiflna Peck. In grassy ground. Denver. May, 19 14. Nos. 



i77i> 1773- Collected by E. Bethel. 



97. Pleurotus ostreatus Jacq. On dead wood. Tolland. June 27, 1913; 



July 29, 1914. Nos. 1269, 2064. 



98. Plutens cervinus (Schaeff.) Fr. On ground rich in humus. June 27, 



1913 ; July 12, 1914. Nos. 1260, 1893. 



99. Russula^ abietina Peck. On moist ground in coniferous forests. Tol- 



land and South Boulder Canon. July 16, 30, 1913- Aug. 5, i9i4' 

 Nos. 1306, 1403, 21 17. 



100. Russula alutacea Fr. On ground in coniferous forests. Tolland and 



South Boulder Canon. July 24, 1913; Aug. 3, 4, 5, 1914. Nos. i359> 

 2097, 2105, 2106, 2116, 2124. 



1 01. Russula atroviolacea Burlingh. On ground under willows. Tolland. 



July 14, 1914. No. 1909. This collection was made the type of a 

 new species by Miss Burlingham. 



102. Russula betulina Burlingh. On ground in aspen thickets or under pines. 



Tolland, July 25, Aug. 3, 1914. Nos. 1978, 2084, 2094. 



5 All determinations in this genus were made by Miss G. S. Burlingham. 



