150 ILLINOIS ACADEMY OF SCIENCE 
3. Creeping Eragrostis, Eragrostis hypnoides (Lam.) B. 
Pr 
4. Low Cyperus, Cyperus diandrus Torr. 
5. Awned Cyperus, Cyperus inflexus Muhl. 
6. Pink Smartweed, Persicaria pennsylvanicum (L.) 
7. Rough-fruited Water Hemp, Acnida tuberculata Mog. 
8. Carpet weed, Mollugo verticillata L. 
9. Clammy-weed, Polanisia graveolens Raf. 
10. Three-seeded Mercury, Acalypha virginica L. 
11. Spotted spurge, Chamaesyce maculata (L.) Small. 
12. Conobea, Conobea multifida (Mich.) Benth. 
13. Long-stalked False Pimpernel, [/ysanthes dubia (L.) 
Barnhart. 
14. Ragweed, Ambrosia elatior L. 
15. Eclipta, Verbesina alba L. 
16. Smaller or Nodding Burr Marigold, Bidens cernua L. 
Beggar ticks, Sticktight, Bidens frondosa L. 
18. Tall or Wild Wormwood, Artemisia caudata Michx. 
The following are special notes on the plants encountered. 
Along with the notes is given the range in size as given in 
current descriptions, those of Britton & Brown’s Illustrated 
Flora, 2nd Edition, and in the 7th edition of Gray’s Manual, 
Revised by Robinson & Fernald. It is not believed the de- 
scriber meant the dimensions given to cover the greatest ex- 
tremes, but they are, however, given for comparison. 
1. Echinochloa crusgali (L.) Bauv. Barnyard Grass. 
Cockspur grass. 
Rather common in the region in wet places. It usually 
forms a narrow fringe about the margins of the artificial fish- 
ponds on the Station where it grows tall, usually about 5 feet 
high. Often found along river and lake shores. “Culm 2-4 
tall (Britton & Brown) “3-18 dm. high” (Robinson & Fer- 
