33 OHIO BIOLOGICAL SURVEV 



Laciiiaria spicata (L.) Willd. (Liatris). Dense Blazing-star. Pine Barren, above 



Old Man's Cave, a single stalk, B. W. Wells. Also reported by Bigelow for 



Fairfield County. 

 Vernonia altissima Nutt. (V. gigantea, V. maxima). Tall Ironweed. Abundant. 



No specimen. 

 Achillea millefolium L. Common Milfoil. Aliundant. No specimen. 

 Anthemis cotula L. Common Dog Fennel. 

 Chrysanthemum leucanthemum L. Ox-eye Daisy. 

 Tanacetum vulgare L. Common Tansy. No specimen. 

 Erectites hieracifolia (L.) Raf. Fireweed. Abundant. No specimen. 

 Mesadenia atriplicifolia (L.) Raf. (Cacalia). Pale Indian Plantain. 

 Senecio aureus L. Golden Groundsel. Common and conspicuous in the spring. No 



specimen. 

 Arctium minus Schk. Common Burdock. No specimen. 

 Cirsium lanceolatum (L.) Hill. (Carduus). Spear Thistle. No specimen. 

 Cirsium altissimum (L.) Spreng. Tall Thistle. No specimen. 

 Cirsium discolor (Muhl). Spreng. Field Thistle. 



Cirsium virginianum (L.) Mx. Virginia Thistle. Fide Bigelow. Now known only 

 from Madison County. 



Cicoriaceae, Chicory Family. 



Cynthia virginicum (L.) Ktze. (Kregia amplexicaulis, Adopogon). Virginia Dwarf- 

 dandelion. 



Leontodon taraxacum L. (T. officinale). Dandelion. 



Sonchus oleraceus L. Common Sow-thistle. No specimen. 



Sonchus aspera (L.) Hill. Spiny Sow-thistle. No specimen. 



Lactuca virosa L. Strong-scented Lettuce. 



Lactuca canadensis L. Tall Lettuce. 



Lactuca spicata (Lam) Hitch. Tall Blue Lettuce. Fide Bigelow. 



Lactuca integrifolia Bigel. Entire-leaf Lettuce. The only Ohio station. 



Hieraeium venosum L. Veined Hawkweed. 



Hieracium paniculatum L. Panicled Hawkweed. 



Hieraeium scabrum Mx. Rough Hawkweed. 



Hieracium niarianum Willd. Maryland Hawkweed. I have worked over the last 

 three in the Gray Herbarium and submitted them to Professor Fernald, but 

 it is not possible to make very satisfactory determinations. The characters 

 given in the manuals seem worthless for diagnosis. I give the names merely 

 for what they are worth. 



Nabalus altissimus (L.) Hook. (Prenanthes). Tall Rattlesnake-root. 



Nabalus albus (L.) Hook. (Prenanthes). White Rattlesnake-root. Fide Bigelow. 



Nabalus racemosus (Mx.) D. C. (Prenanthes). Glaucous Rattlesnake-root. Fide 

 Bigelow. 



Nabalus crepidineus (Mx.) D. C. (Prenanthes). Corymbed Rattlesnake-root. Fide 

 Bigelow. 



