1923] The Gasteromycetes of North Carolina 239 



Mutinus Ravenelii (B. & C.) E. Fischer 



Plates 71 and 74 



Plants about 6-8 cm. high, the ample volva 2.5-3.5 cm. long ; stalk 

 up to 1.3 cm. thick in center and typically tapering a little downward, 

 again nearly cylindrical, the 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 downwards ; 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 55-75^0, 

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

 thick, with about 5-7 layers of cells. 



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



This is more common with us than M. Curtisii. 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. Ravenelii as different from M. caninus, both occur- 

 ring 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 would probably consider the left hand 

 plant on our pi. 74 as M. caninus, the two right hand plants as M. 

 Ravenelii. We cannot find any important difference in structure 

 among the forms we have collected. 3Iutinus caninus is common in 

 Europe. 



Illustrations: Lloyd. Mye. 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. e., pi. 1, figs. 3-11. 



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



Sowerby. Engl. Fungi, pi. 330. 



22a. By stone "n-all near Battle's Park, October 24, 1902. Spores 1.4-2 x 3.7-4.4^^. 



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



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/t. 



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;oi. 



