LYCOPERDOX EXCORIATUM* (Plate 60). This is a form 

 in which the cortex warts adhere together and flake off in pieces as in 

 Lycoperdon cruciatum. After the excoriation, the peridium is smooth 

 and not "scarred" as in the normal form. 



SPECIMENS IN OUR COLLECTION. 



Maine, F. K. Vreeland ; 'New Hampshire, Miss Alice Theobald ; Pennsylvania, 

 Miss E. Hodges. 



LYCOPERDON NIGRESCENS (Plates 47 and 60). Plant 

 with sterile base of large cells. Cortex of stiff, black spines 2 mm. long, 

 in clusters of four, and surrounded at base by minute spinules. The 

 large spines fall away leaving the surface reticulate with the minute 

 spinules. Gleba olive-umber. Spores medium. 4-5 mic. slightly rough. 



This species is really a form of gemmatum excepting that the stiff 

 spines are not consolidated. It is a rare plant in this country, and the 

 warts while of the same nature are not so black as on the European 

 plant. 



SPECIMENS IN OUR COLLECTION. 



Massachusetts, H. Page; Maine, F. K. Vreeland; West Virginia, C. G. Lloyd; 

 Nczv York, Chas. Peck; New Hampshire, T. L Smith. (In the last two collections 

 the warts are not "black.") 



LYCOPERDOX PIRIFORME (Plate 48). Plants usually pear 

 shaped, growing generally densely gregarious on old stumps, logs, etc. 

 Long, white, fibrous, mycelial strands penetrate the rotten wood and are 

 always a noticeable character of this plant. 



Cortex of minute, fasciculate spines, subpersistent, 

 and evenly spread over the peridium. Sometimes they 

 have a tendency to coalesce into nodules. Sterile base 

 usually well developed, sometimes almost absent, of 

 small cells. Columella prominent (fig. 8.3f). Gleba 

 olivaceous, then brown. Capillitium colored, long, 

 branched. Spores small 4 mic. globose, smooth. 



This is one of the two very common species in all 

 temperate countries. It generally grows on logs and 

 stumps but occasionally is found on the ground, from 

 mycelium that I think remains where wood has rotted. 

 As it grows on logs it is generally caespitose and com- 

 FI 86 pressed. On the ground I have seen it more scattered 



and regular in form. It usually develops late in the 

 season and in the fall our logs and stumps are frequently covered with 

 it. It semi-persists during the winter and often very fairly preserved 

 specimens are collected in the spring. 



SPECIMENS IN oui< COLLECTION. 



Canada, John Dearness, J. Macoun, Miss I. M. Walker, J. H. Cameron A. J. 

 Hill, T. R. Donnelly; Maine, F. K. Vreeland; New Hampshire, Miss Alice Theo 

 bald, C. E. Montgomery; Massachusetts, M. L. Fernald, G. E. Fernald. G. E. 

 Morris, S. S. Crosby, T. L. Smith. R. B. Mackintosh, Geo. B. Fessenden. Walter 

 Deane. Clara E. Cummings, Mrs. F. A. Pierce, Simon Davis, Wm. C. Bates. R. B. 

 Mackintosh; Mary'aiid, Chas. Mcllvaine; Indiana, H. B. Dorner; Illinois, A. S. 



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