74 
IOWA ACADEMY OF SCIENCES. 
Liatris punctata Hook. Not rare. 
Chrysopsis villosa Nutt. Rather common. Not reported 
from Iowa. 
Aster dblongifolius Nutt. Not rare. 
Aster ptarmicoides T. and G. Not common. 
Artemisia canadensis Mx. Not common. 
Artemisia frigida Willd. Not common. Not reported from 
any other part of the state. 
Lygodesmia juncea Don. Not common. 
Cuscuta arvensis Beyr. Common, chiefly on the two species 
of Artemisia mentioned. 
Pentstemon gracilis Nutt. In fruit. Not common. This is 
the first report of its occurrence in the state. 
Pentstemon grandijiorus Nutt. Rare on the exposure, but 
very common on the barren hills west of Granite. 
Verbena angustifolia Mx, Not common. 
Plantago patagonica Jacq., var. gnaphaloides Gray. Common. 
Reported from several counties in the western and southwestern 
part of the state. 
Oxybaphus hirsutus Sweet. Not common. 
Salsola kali L., var. tragus (L.) Moq. A dwarf form not 
exceeding eight inches in height, with mostly simple stems, 
was quite common. 
Bouteloua oligostachya Torr. Common. 
Bouteloua hirsuta Lag. Not rare. Both of these species are 
quite common near Granite, and also near Rock Rapids, in 
Lyon county, 
Carex stenophylla Wahl.* Not uncommon. A rare species, 
heretofore found in this state only in Emmet county. 
Placodium vitellinum (Ehrh.) Naeg. and Hepp. f Not uncom- 
mon. 
Placodium vitellinum var. aurellum Ach. Rather rare. 
Placodium elegans (Link) D. C. Rare. 
Placodium cerinum (Hedw.) Naeg. and Hepp. (?) Not common. 
Lecanora cinerea (L.) Sommerf. Not common. 
Lecanora rubina (Vill.) Ach. Quite common. 
Lecanora muralis (Schreb.) Sch^r., var. saxicola Schs0r. 
Quite common. 
Rinodina oreina (Ach.) Mass. Very common. 
* The species of Carex, mentioned in this paper, were partly identified or verified 
by Prof. R. I. Cratty. 
+ The lichens were identified or verified by Prof. Bruce Pink. 
