August, 1955 
Danthonia spicata (L.) Beauv. ex 
Roem. & Schult. Poverty oat-grass was 
observed in rock prairie at Devil’s Back- 
bone. It is usually found in dry woodlands. 
Elymus canadensis L. Canada _ wild- 
rye was found in 16 of the 61 hill prai- 
ries visited. 
Elymus virginicus L. Virginia wild- 
rye was found in three hill prairies. It 
Was more common in the adjacent wood- 
lands than in prairie areas. 
Eragrostis capillaris (L.) Nees. Lace- 
grass, a species of fields, clearings, rock 
ledges, and glades, was collected from hill 
prairie areas only on the rocky slope at 
Fountain Bluff. 
*Eragrostis cilianensis (All.) Lutati. 
Stinkgrass was found only on the dis- 
turbed crest of the bluff-ridge at Clen- 
denny. 
Eragrostis spectabilis (Pursh) Steud. 
Purple lovegrass was found scattered in 
17 loess prairies. 
Festuca octoflora Walt. Six-weeks fes- 
cue (including the variety tenella) was 
observed in six hill prairies, either on 
rocky or loess slopes. It was seen also 
on limestone ledges at three prairie sites. 
Hordeum pusillum Nutt. Little barley 
was found only at Phegley hill prairie. 
Koeleria cristata (L.) Pers. Junegrass 
occurred in scattered patches in 14 hill 
prairies, but it was never abundant. 
Leptoloma cognatum (Schult.) Chase. 
Fall witchgrass, more frequent in sand 
prairie than in hill prairie, was observed 
at only two sites, Hidden Lake and Dev- 
il’s Backbone. 
Melica nitens (Scribn.) Nutt. ex Piper. 
Three-flower melic, a plant of rocky 
woods, bluffs, and glades, was found 
growing at Chautauqua on stony prairie 
slopes, at Valmeyer and Fults on the rock 
ledges. 
Muhlenbergia capillaris (Lam.) Trin. 
This muhly of rocky or sandy woodlands 
was found only in rock prairie at Gov- 
ernment Rock. 
Muhlenbergia cuspidata (Torr.) Rydb. 
Plains muhly, a plant of rocky blufts, 
sandy woods, and loess hills, was found 
only in loess at Bluff Springs. 
Muhlenbergia racemosa (Michx.) 
B.S.P. This species occurred on_ loess 
slopes at Wiersma, on rock-strewn slopes 
Evers: Hitt Prairies or ILLINOIS 
425 
of El Rancho, and on rock ledges at Foun- 
tain Bluff and Sampson. 
Panicum capillare L. Witchgrass was 
observed in two hill prairies, Bluff Springs 
and Richwood. 
Panicum dichotomum L. This panic 
grass was collected on the stony slopes at 
Fountain Bluff. 
Panicum huachucae Ashe. [P. lanugi- 
nosum var. fasciculatum (Torr.) Fern.] 
This prairie species of panic grass was 
found in five hill prairies on the bluffs of 
the Mississippi River. 
Panicum linearifolium Scribn. This 
species, usually of dry woods, was found 
on stony slopes of Fountain Bluff and 
Government Rock. 
Panicum scribnerianum Nash. [P. oli- 
gosanthes var. scribnerianum (Nash) 
Fern.] This species was seen in 27 hill 
prairies, mostly on loess but occasionally 
on rocky slopes. 
Panicum sphaerocarpon Ell. This pan- 
icum of sandy soil was collected at Pheg- 
ley hill prairie in loess. 
Panicum tennesseense Ashe. [P. lanu- 
ginosum var. fasciculatum (Torr.) 
Fern.| This plant grew in loess at Me- 
nominee Station and on stony slopes at 
Standard. 
Panicum virgatum L.  Switchgrass, 
common throughout most types of prairie 
in Illinois, was observed in hill prairie 
only at South Palisades and Hill-Top. 
Paspalum stramineum Nash. This spe- 
cies was found in loess of five hill prai- 
ries. 
*Poa compressa L. Canada bluegrass 
occurred on two loess slopes and also two 
stony slopes. 
Poa pratensis L. Kentucky bluegrass 
was found in more than 20 hill prairies. 
In some it was locally dominant but more 
often occurred scattered throughout the 
prairie area. It becomes dominant in pas- 
tures, and spreads from them. 
*Setaria lutescens (Weigel) Hubb. 
[S. glauca (L.) Beauv.] Yellow bristle- 
grass, or yellow foxtail, was found at 
Hidden Lake in loess and on the rock 
ledges at Valmeyer. 
*Setaria viridis (L.) Beauv. Green 
bristlegrass, or green foxtail, was seen on 
three prairie slopes. It was more common 
on rock ledges than in hill prairie. 
