10 THE GASTEROMYCETES OF THE UNITED STATES AND CANADA 



spore-bearing part about 2-2.5 cm. of the apex, more or less abruptly marked off from 

 the sterile part by the narrower, radially elongated, definitely one-layered compartments 

 of the wall. Color bright rosy red above (under and below the slime), fading down- 

 wards; apex with or without a small opening; odor strong and offensive. Wall of the 

 stalk about 3 mm. thick in center and 1.5 mm. thick near base; that of the spore-bearing 

 part about 2 mm. thick below and 1 mm. thick above; walls of the stalk compartments 

 55-75/1 thick, with 3-4 layers of cells, those of the spore-bearing part 90-95/1 thick, 

 with about 5-7 layers of cells. 



Spores (of No. 741) smooth, elliptic, 1.6-2.2 x 3.7-4.8/1. 



This is more common with us than M. Ciirtisii. For treatment of its development 

 see Burt in Ann. Bot. 10: 343, pis. 17, 18. 1896; see also Bambeke, Mem. Acad. Roy. 

 Belgique, 2nd. ser., 2: 1. 1910. Lloyd considers M. Rawnelii as different from M. 

 caninus, both occurring in the eastern United States (Myc. Notes No. 24: 300; No. 26: 

 325; Syn. Known Phal., p. 28). Burt considers the two species the same (1. c, p. 344). 

 Lloyd's interpretation would probably refer the left hand plant on our pi. 4 to M. 

 caninus, the two right hand plants to M. Ravenelii. We cannot find any important 

 difference in structure among the forms we have collected. Mutinus caninus is common 

 in Europe. 



Illustrations: Long. Journ. Myc. 13: pi. 104 (as M. caninus). 1907. 



Lloyd. Myc. Notes No. 24, fig. 135; No. 28, fig. 183. 



Marshall. Mushroom Book, pi. opposite p. 136 (as M . caninus). 

 For illustrations of the European M. caninus see : 



Fischer. 1. c, fig. 142 A-E. 



Hollos. 1. c, pi. 1, figs. 3-11. 



Long. 1. c, pi. 104, fig. 9. 



Nees von Esenbeck. Syst. Pilze Schw., pi. 36b, fig. 260. 1817. 



Sowerby. Engl. Fungi, pi. 330. 



22a. By stone wall near Battle's Park, October 24, 1902. Spores 1.4-2 x 3.7-4A)i. 



24a. Old Chapel Hill collection without label. Spores smooth, 1.6-2.2 x 3.7-4.8/1. 



741. On ground near stream, September 12, 1913. 



1312. Near brook just above Meeting of the Waters, September 17, 1913. Spores 1.2-2.2 x 3.7-4.6/1. 



1729. In low place by branch, September 10, 1915. 



1925. In grass in front of Davie Hall, October 25, 1915. Spores 1.6-2.2 x 3.7-4.8/1. 



Pennsylvania. Buck Hill Falls. Mrs. Delafield, coll. (N. Y. B. G. Herb., as M. elegans). 

 Also collection from Pennsylvania by Sumstine. (Herb. Carnegie Mus., Pittsburgh, Pa., as M. caninus, 

 and U. N. C. Herb.) 



Mutinus Curtisii (Berk.) E. Fischer 

 M. bovinus Morgan 

 M . elegans Mont. 



Plates 5, 6 and 105 



Plant about 10-17 cm. high, the white volva at first spherical then elongating and 

 on rupturing at the apex collapsing against the stalk which is almost cylindrical for the 

 first third and up to 2.5 cm. thick, then tapers gradually upward to the blunt point; 

 spore-bearing (slimy) part composing about 3-5 cm. of the apical end, similar in super- 

 ficial appearance to the rest of the stem except for the slime; color bright rosy red under 

 and below the slime, gradually fading to watery white or flesh color below; apex per- 

 forated by a small opening; volva rooted by a strong cord; odor of the brownish slime 

 very strong and offensive. 



