312 TWENTY-FIRST REPORT. 



Keys to tlio gohtira of Agaricales <aud of tho more cominou orders of 

 Ascomyceteae, as well as species keys for the genera of Polyporaceae found 

 in Michigan. 



Lloyd, C. G. Synopsis of the genus Fomes. Mycological Writings 4: 211-288. 

 Figs. 570-610. January, 1915. 



Synopsis of the genus Hexagona. Mycological Writings .3: 1-46. Figs. 

 279-330. June, 1910. 



Synopsis of the sections Mieroporus, Tabacinus and Fimales of the genus 

 Polystictus. Mycological Writings 3: 49-70. Figs. 336-356. August, 

 1910. 



Synopsis of the section Apus of the genus Polyporus. Mycological Writings 

 4:291-392. Figs. 631-706. June, 191.5. 



Synopsis of the section Ovinus of Polyporus. Mycological Writings 3: 73-94. 

 Figs. 496-509. October, 1911. 



Synopsis of the stipitate Polyporoids. Mycological Writings 3: 95-208. 

 Figs. 395-500. 1912. 



Atkinson, G. F. Observations on Polyporus lueidus Leys, and some of its 

 allies from Europe and North America. Botanical Gazette 46: 321-338- 

 PI. 19. Figs. 1-5. 1908. 



Burt, Edward A. Merulius in North America. Ann. Mo. Bot. Gard. 4: 

 305-362. Pis. 20-22. Figs. 1-39. November, 1917. 

 Merulius in North America. Supplementary Notes. Ibid. 6: 143-145. 

 1919. 



Murrill, Wm. A. Boletacese. North American Flora ,9: 133-161. 1910. 

 American Boletes. 1-40. 1914. 

 The Boletacese of North America. Myeologia 1: 4-18, 140-160. 1909. 



Peck, Charles H. Boletinus. New York State Museum Bulletin 8: 74-80. 

 1889. 



Boletus. Ibid. 8: 80-150. 1889. 

 Strobilomyees. Ibid. 8: 158-159. 1889. 



Family Hydnaceit. 



Banker, H. J. A preliminary contribution to a knowledge of the Hydnaceee. 

 Bull. Torr. Bot. Club 28:199-222. April, 1901. 



A contribution to a revision of the North American Hydnaceae. Memoirs 

 of the Torrey Botanical Club 12:99-194. 1906. 



Lloyd, C. G. The genus Radulum. Mycological Writings 4: 1-12. Figs. 

 961-984. May, 1917. 



Family ClavariacecB. 



Cotton, A. D. and Wakefield, E. M. A revision of the British Clavariae. 

 Trans. Brit. Myeolog. Soc. 6: 164-198. 1918. 



