1924) 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIII 7 



2. C. pulverulenta (Berk. & Curtis) Patouillard, Soc. Myc. 

 Fr.Bul. 15 : 194. pi. 9, f. 4. 1899; Sacc. Syll. Fung. 16: 50. 1902. 



Plate 1, fig. 5. 



Craterellus pulverulentus Berkeley & Curtis, Linn. Soc. Bot. 

 Jour. 10: 328. 1868; Sacc. Syll. Fung. 6: 520. 1888. 



Type: in Kew Herb, and Curtis Herb. 



Fructification pallid ferruginous; pileus orbicular, pulverulent, 

 the margin inflexed; stem thickened towards the base, black; 

 hymenium sparingly venose, colored like the pileus. 



Pileus 2 mm. broad; stem 2% mm. long. 



On bark of sticks. Cuba and Porto Rico. May and July. 



A collection of a dozen or so fructifications from Porto Rico by 

 Professor Stevens, taken in connection with specimens of the 

 type collection in Curtis Herb., shows that while the original 

 description of C. pulverulenta by Berkeley & Curtis, literally 

 translated above, is correct as far as it goes it does not give details 

 enough for critical comparison with C. minima. The specimens 

 of C. pulverulenta are plano-convex rather than campanulate 

 as stated by Patouillard, and the margin only slightly inflexed, 

 entire but slightly notched behind near point of attachment of 

 the stem which is sometimes nearly central but usually distinctly 

 eccentric. The spores are hyaline, even, 3% X 2 \l in the type, 

 3-6 X 2-2J^ y. in more copious occurrence in the Porto Rican 

 gathering, and the hyphae slightly colored, 3-4 [x in diameter. 

 The dry specimens in Curtis Herbarium now have the upper 

 surface of the pileus Natal brown of Ridgway and the hymenium 

 and the stem bone-brown. 



Specimens examined: 



Cuba: C. Wright, 56 4> type (in Curtis Herb.). 

 Porto Rico: Monte Alegullo, F. L. Stevens, 1358 (in Mo. Bot. 

 Gard. Herb., 55402, and Stevens Herb.). 



3. C. marasmioides (Berk. & Curtis) Patouillard, Soc. Myc. 

 Fr. Bui. 15: 194. pi. 9, f. 5. 1899; Sacc. Syll. Fung. 16: 50. 

 1902. 



Craterellus marasmioides Berkeley & Curtis, Linn. Soc. Bot. 

 Jour. 10: 328. 1868; Sacc. Syll. Fung. 6: 520. 1888. 

 Type: in Curtis Herb, and Kew Herb, probably. 



