Report of the Botanist. 115 



Leaves and j^etioles of honewort, CryptotcBnia Canadensis. 

 Common. June. 



The spores closely resemble those of the preceding species, but 

 in habit and in the character of the sori it is quite distinct. The 

 leaves of tlie honewort are so thin that tlie sori form little dot-like 

 elevations on the upper surface. 



13. P. Mari^-Wilsoni Clinton Spring- Beauty Brand. 



Amphigenous; spots none; sori scattered or clustered, unequal, 

 at first covered by the epidermis, then surrounded by its ruptured 

 remains, reddish-brown ; spores subelliptical, scarcely constricted, 

 crowned with a pustule, .0013'-.0018' long, .OOOT-.OOOS' broad. 



Leaves and stems of the spring beauty, Claytonia Caroliniana. 

 Buffalo. Clinton. Knowersville. May. 



This species is closely related to the two preceding, but differs 

 from both by its habit and larger spores. It is so:netimes f )und 

 associated with j^cidixiin Claytoniatuni Schw., growing on the 

 same plant and even on the same leaf. 



14. P. TiARELL^ B. (& C. Mitrewort Brand. 



Spots brown or reddish-brown, sometimes margined with yellow ; 

 sori scattered, prominent, reddish-brown ; spores subelliptical or 

 oblong, slightly constricted, subacuminate, .001-.0013' long, 

 .0005-.0006' broad ; peduncle one-fourth to one-half the length of 

 the spore. 



Leaves of mitrewort, Tiarella cor dif alia. Sandlake and Wat- 

 kins. August and September. 



The sori are generally on the lower surface of the leaf, but some- 

 times they occur plentifully on the upper surface. I have seen no 

 description of this species, but have specimens from Dr. Curtis 

 which are labeled with this name and are identical with mine. 



§ 4. Spores echinulate^ peduncle various. 



15. P. Mentha Pers. Mint Brand. 



Hypogenous ; spots yellow, brown or purplish, sometimes none ; 

 sori unequal, subrotund, scattered or clustered, blackish-brown or 

 black ; spores subglobose or vertically flattened, not constricted? 

 .OOr long, .0008' broad ; peduncle hyaline, equal to or exceeding 

 the length of the spore. 



Leaves of various mints, Mentha Canadensis^ Monarda fistulosa 

 and Hedeoma piilegioides. Buffalo. Clinton. New Baltimore. 

 Howe. G-reenbush and Watkins. September and October. 



The American specimens, var. Americana^ differ from the 

 European in having the spores distinctly echinulate, and this 



