* Fucdnia xanthii Schw., on Xanihium speciosum. 

 Uromyces falxF (Pers.) D. & B., on Lathyrus venosus. 



* Mycenastrum spinuJosum Pk., prairie at the head of West Okoboji lake. 

 Dr. Arthur also reported the foUoTdng additional species from this re- 

 gion. 9 



Ustilago caricis Pers.. on Carex pennsylvanica. 

 Puccinia graminis Pers., on grasses. 



Fucdnia ruhigovera (DC.) Wint., on Elymus canadensis. 

 Fuccinia sporoboli Arth., on SporohoVds heterolepis. 



Fuccinia andropogonis Schw., on Andropogon furcaius and A. scoparius. 

 Fucdnia vexans Earl., on Bouteloua curtipendula and Sporoholus irevifol- 



Fucdnia epiloti DC, on (Enoiliera biennis. 



Uropyxis amorpliae (Curt.) Schw,, on Amorpha micropliyJJa. 



Lichens 



But few species of lichens are found on the prairie and these are mostly 

 on bowlders. The following species were collected : 



On Frairie Boidders 

 Lecanora muralis saxicoJa (Poll.) Tuck. 

 Lecanora cinerea (L.) Som. — Common. 

 Lecanora Hageni Ach. calcareous bowlders. 

 Flacodium dnnabarinum (Ach.) Anz. 

 Flacodium aurantiacunt (Light.) Hepp. 

 Flacodium vitellinum (HofP.) Hepp. 

 Flacodium vitellinum. aurellum (Hoffm.) Tuck. 

 Flacodium elegans (Link) DC. 

 Treloschistes chrysophthalmus (L.) Th. (Eare). 

 Rinodina oreina (Ach.) Mass. Very common. 

 Fhyscia cassia (Hoff.) Xyl. 

 FJiyscia stellaris L. 

 Verrucaria fuscella (Turn.) Ach. 

 Verrucaria pyrenopliora (Ach.) Xyl. 

 Endocarpon pusillum (Hedw.) calcareous bowlders. 



On Old Fine Fences 

 Lecidea myriocarpoides Xyl. 

 Flacodium pyraceum (Ach.) Fink. 

 Acolium tigillare (Ach.) S. F. Gr. 



Subkingdom II BRYOPHYTA 

 So far as observed in this region the bryophytes are represented only by 

 the following species: 



Ephemerum sessile (B. & S.) Miill. On ground on dry hills. 

 Grimntia apocarpa (L.) Hedw. On bowlders. 



For the sake of compactness and to avoid useless repetition of 



9 Bulletin of the Iowa Agricultural College, 1884. Locality given as "Dickinson 

 county" in each case, but evidently referring chiefly to our territory. 



27 



