436 



White : Tylostomaceae of North America 



ing downward instead of fusiform. T. obcsiim ,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. 



albicans. 



campestre. 



exasperatum. 



fibril losum. 



fimbriatum. 



gracile. 



Kansense. 



minutum. 



obesum. 



pedunculatum. 



poculatum. 



punctatum. 



semisulcatum. 



subfuscum. 



tuberculatum. 



verrucosum. 



Wrightii. 



^i S 



rt 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



<\ 



11 



ho a ; 



C c( 

 •= 1 bo 





+ 



+ + 

 + 



+1 

 +1 



+ + 



+ 



+ 





+ 



O ^ 



C \ 13 

 U 



+ 



i + 

 + 



+ +,+! 



+1 



+ 

 + 



+ 



+ 



+ 



+ 



+ 



+ 



S 



+ 



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



189. pi. 4. f. 2, J. 1899 



In describing this genus Spegazzini includes two species from 

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

 Mexican material, and C.Amblaiensis 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 

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

 CJilamydopus. 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./ 4. 1843. 



