Clavarias of the United States and Canada 99 



or may not indicate varietal, or possibly specific distinction. We 

 have not been able to correlate these differences and they are 

 moreover of doubtful systematic value. We give below three 

 examples illustrating some of this variation : 



No. 40. Vaughns, N. Y. 



Spores obscurely asperulate, 2.8 x 3.2/*. 

 Basidia about 4-4.4/* thick. 



Hymenium 25-35 /* thick, densely packed with large and small crystals 

 which are insoluble in KOH. 



Threads of flesh 2-6/* (average about 4/*) thick, parallel in longitudinal 

 section, closely packed ; no clamp connections seen. 



No. 59a. Vaughns, N. Y. (Part of the collection in Albany). 

 Spores minutely but obviously asperulate, 2.7-3.5 x 3-4/*. 

 Basidia 3.7-6.6/* thick (usually about 4/*), 4-spored. 

 Hymenium about 100/* thick ; a few crystals present. 



Threads of flesh 4-7.5/* thick (most about 5/* thick), parallel in longitudinal 

 section ; clamp connections present. 



No. 63a. Long Island, N. Y. 



Spores smooth or nearly so, 3 x 4/t. 

 Basidia 4.8-6.2/* thick, 4-spored, fusiform. 

 Hymenium 30-37/* thick. 



Threads of flesh 3-4.8/* thick, parallel in longitudinal section ; no clamp 

 connections seen. 



Juel (cited under C. cristata) finds in C. subtilis (determined 

 by Dr. R. E. Fries) the basidia and hymenium much as in C. mus- 

 coides, basidia 4-spored, spores uninucleate (pi. 3, figs. 81-83). 



Illustrations: Britzelmayr. Hymen. Siidb., Clavariei, fig. 13 (as C. sub- 

 tilis). (Fig. 69, so labelled, cannot be the same). 

 Burt. Ann. Mo. Bot. Gard. 6: 272, fig. 11 (as L. subsimile). 1919; 9: 

 pi. 6, fig. 44 (as C. aspcrula) ; fig. 45 (as C. asperulans) ; pi. 11, fig. 103 

 (as C. sub cortic alis). 1922. 



Persoon. Comm., pi. 1, fig. 2 (as C. subtilis). 1797. 



Rea. Trans. Brit. Myc. Soc. 6: pi. 2, fig. 5 (as C. chionca). 1917. 



North Carolina: Chapel Hill. No. 1704. In tufts in colonies, wet soil in 

 woods, September 8, 1915. 



Asheville. Beardslee. (U. N. C. Herb.). Spores exactly like those of 

 Chapel Hill plants, asperulate, 3.5/* in diameter. 



Blue Ridge Mountains. Atkinson. (Cornell Herb., as C. asperula). 



Pink Bed Valley. Murrill and House. (U. N. C. Herb.). Spores mi- 

 nutely asperulate, subspherical, 3.4 x 4/*. 



