GEOI.OGY OF LA SALLE COUNTY. 



165 



Eclipta alba, 94. After Xanthiuro. A. slender, 

 rough, leaves opposite, lanceolate, acute at each end, 

 sessile, some serrate. 



Rudibeckia laciniata, 94. Smooth, branching", 

 2-7 feet, leaves smooth or not, lower pinnate with 

 5 to 7 cut or three-lobed leaflets, upper irregularly 

 3 to 5 lobed. 



Chrysanthemum leucanthemum, 97. Before Tan- 

 acetum. Flowers 1^ to 2 inches across, rays white, 

 disc yellow, leaves dark green cut into narrow sigments. 



Erecttites hieracifolia, 97. After Cacalia. A. 

 Krect, coarse, juicy stemmed and strong smelling, 

 leaves long, narrow, coarsely toothed, light green. 



Cnicus lanceolata, 98. Common thistle. 



Steironoma lanceolatum, 101. Erect, 1-2 feet, 

 ] eaves lanceolate to linear, petiole short, margined. 



Lysimachia thyrsiflora, 102. Smooth, 1-2 feet, 

 flowers light yellow, in spikes, in axils of 1 or 2, of 

 middle pairs of leaves. 



B. Acerates lanuginosa, 104. Hairy, 5-12 inches, 

 leaves lanceolate, flowers small. 



A. longifolia. Erect, 1-3 feet, very leafy, leaves 

 linear. 



Heliotropium corassavicum, 106. Before Cyno- 

 glossum. Ascending smooth, leaves lance-linear, 

 thick, pale. Damp places, salt soils. 



Echinospermum lappula, 106, 1-2 feet. Waste 

 places. 



Lophanthus scrophulari^folius, 114. Obtusely 

 four angled, leaves below short, hairy. 



Solanum elseofinifolium, 108. More or less prickly, 

 with small, slender prickles. Along railways. 



Rumex verticillate, 117. Tall, 3-5 feet, leaves 

 lanceolate, obtuse, pale green. Wet places. 



