IOWA ACADEMY OP SCIENCES. 187 



Lecanora varia Ehrh, NyL, var. sozpincola Fr. This rare 

 Iowa variety was sent from Black Hawk county Coll., Morton 

 E. Peck. 



Lecanora privigna Ach., Nyl. var. pruinosa Auct. On cal- 

 careous rocks, frequent at Fayette. Previously reported from 

 Johnson county. 



Cladonia cariosa Ach., Spreng. This species only reported 

 from Johnson county, is common in northern Minnesota. In 

 Iowa it seems to be largely replaced by the more southern C. 

 mitrula Tuck. Especially interesting because the southern 

 limit of the one and the northern limit of the other may be 

 looked for in Iowa or Minnesota. 



Cladonia cornucopioides L., Fr. Collected only along the 

 Mississippi river in Clayton county. Another species appar- 

 ently following the river down from more northern regions 

 where I find it common. Should be diligently sought further 

 south in Iowa, especially along the river. 



Biotora granulosa Ehrh., Poetsch. Found with the last, 

 which is as far south as it is known, except in mountains. 

 Should be sought further south, as the last. 



Biatora inundata Fr. I have recently collected this lichen 

 on trees. Previously reported from several places, but only on 

 rocks. 



Arthonia dispersa Schrad., Nyl. On trees. Black Hawk 

 county. Coll., Morton E. Peck. 



Endocarpon pusillum Hedw. var. garoqaglii Kph. On calcar- 

 eous rocks, infrequent, Fayette. I have also collected it in 

 Kane county, 111. , from which state it has not been previously 

 reported. 



Verrucaria fuscella Fr. On calcareous rocks. Black Hawk 

 county. Coll., Morton E. Peck. 



Verrucaria muralis Ach. On calcareous rocks. Black Hawk 

 county. Coll., Morton E. Peck. 



It is worth noting that the last two rather rare species have 

 been collected at La Crosse, Wis., by Prof. L H. Pammel. 

 Also, the last was sent me by Mr. E. Bartholomew, from 

 Rooks county, Kan. 



