436 



White : Tylostomaceae of North America 



ing downward instead of fusiform. 



T. obesum C. & E. appears 

 to be founded on a specimen with the short thick stipe not fully 



developed." 



Morgan's description was made solely from Webber's Colo- 

 rado specimen which was returned to Mr. Webber who is now 

 unable to find it. The New Mexican reference is merely a quo- 

 tation from Berkeley who determined Wright's original specimens 

 under this name. 



The following tabulation will give more compactly our pres- 

 ent knowledge of the distribution of Tylostoma in North America : 



Tylostoma. 



•a 



o 

 > 



+ 

 + 



+ | New Jersey. 



Pennsylvania. 



c 

 "o 



U 



a 

 U 



1 



-f- 1 S. Carolina. 



i 



< 



+ 

 + 



C 



+ 



K ! 



V 



h 

 + 



+ 



+ 



6 



X 



53 



+ 

 + 



+ 



+ 



c 



c 



+ 



.2 

 "2 



+ 



• 



eft 



> 



+ 



4 



II 



O 



U 



4- 



+ 



+ 

 + 



+ 

 + 



+ 

 + 



+ 



- 



+ 



+ 



a 



e 



o 



■f 



+ + 1 Michigan. 



• 



+ 



-f- 1 Wisconsin. 



m 



.2 ' 

 © 



- 



+ 



+ 



+ 



+ 



+ 



| 



P 

 .2 



i— i 



+ 



ed 



c 



U 



!+ 

 + 



3 



Q 



+ 



1 



■ 







3 

 v 



- 



albicans. 



campestre. 



exasperatum. 



fibrillosum. 



fimbriatum. 



gracile. 



Kansense. 



minutum. 



obesum. 



pedunculatum. 



poculatum. 



punctatum. 



semisulcatum. 



subfuscum. 



tuberculatum. 



verrucosum. 



Wrightii. 



+ 



+ 

 + 



+ 



II. CHLAMYDOPUS Speg. An. Mus. Nac. Buenos Aires, 6 : 



1 89. pi. 4. f. 2, 





1899 



In describing this genus Spegazzini includes two species from 

 Argentina, C. clavatus, from which we cannot separate our New- 

 Mexican material, and C.Amblaicnsis with a distinct annulus (?), and 

 up to the present no other species of this genus have been reported. 

 It is evident, however, from the description and figure of Tylostoma 

 Mcyenianum Kl.* that that species, also, belongs to the genus 

 Chlamydopus. While the figure shows no trace of a volva, its 

 tapering stem with its broad attachment to the peridium, together 

 with its general habit would seem to indicate its relationship to 



*Nov. Act. Caes. Leop. Carol. Nat. Cur. 19 \ 243.//. j. f. 4. 1843. 



