108 Trans. Acad. Sci. of St. Louis. 
Melica nitens Nutt.* Frequent on cliffs and ledges. 
Festuca octoflora Walt. Common in thin soil. 
Glyceria nervata (Willd.) Trin. Uncommon in moist places. 
CYPERACEAE. 
Cyperus aristatus Rottb.* Common in wet depressions. 
Cyperus ovularis (Michx.) Torr. Frequent in dry soil. 
Cyperus filiculmis Vahl. Frequent with last. 
Eleocharis ovata (Roth) R. & S. Common in pools and depressions. 
Stenophyllus capillaris (l.) Britton. Frequent with last. 
Carex laxiflora blanda (Dewey) Boott. Wet depressions. Uncom- 
mon. 
Carex triceps hirsuta (Willd.) Bailey. Frequent in dry soil. 
COMMELINACEAE. 
Tradescantia reflexa Raf. Common in dry soil and along edges of 
cliffs. 
J UNCACEAE. 
Juncus marginatus Rostk. Very common in wet depressions. 
Luzula campestris bulbosa A. Wood. Common in dry soil. 
LILIACEAE. 
Allium canadense L. Common in dry soil. 
Allium mutabile Michx.* Very local but abundant in wet depress- 
ions. 
Nothoscordum bivalve (l.) Britton. Common in dry soil. 
Camassia esculenta (Ker.) Robinson. Frequent in rather dry situ- 
ations. 
ORCHIDACEAE. 
Spiranthes gracilis (Bigel.) Beck. Occasional in dry soil. 
F'AGACEAE. 
Quercus stellata Wang. Small stunted specimens frequent on knolls. 
Quercus marylandica Muench. Small specimens frequent on knolls. 
Quercus Muhlenbergii Engelm. Small specimens occasional on 
knolls. 
ULMACEAE. 
Celtis mississippiensis Bosc. Common on knolls and along terraces. 
POLYGONACEAE. 
Rume« hastatulus Baldw.* Very common in thin soil, early moist 
but soon dry. 
Polygonum aviculare L. Frequent in dry soil. 
Polygonum tenue Michx.* Common in dry soil. 
CARYOPHYLLACEAE. 
Arenaria patula Michx.* Common in thin soil, early wet but soon 
dry. 
