360 



OHIO EXPERIMENT STATION: BULLETIN 175. 



305 Venus's Looking=glass (A) Specularia pei'foliata (L.) A. DC. Is a 



low plant, 4 to 18 inches high, with roundish, toothed leaves clasping- the stem, 

 and bluish-purple flowers sitting- in the cups. A frequent weed in open, rather 

 sterile ground. It should be pulled up before seeding if found obnoxious. 



306 Lobelia, Indian Tobacco (A) Lobelia inflata L. Is a low weed, 1 to 

 iy 2 feet high, much branched, somewhat hairy, with egg-shaped, blunt-toothed 

 leaves and small blue flowers, followed by inflated, seedy pods. It is very 

 common m dry fields and in pastures generally. This is a very poisonous 

 plant, much prized in domestic medicine as an efficient emetic. It may be 

 pulled up before flowering. The plant is so very poisonous that none but 

 competent physicians should prescribe its use. 



307 Great Lobelia (P) Lobelia syphilitica L. This is a hairy, single- 

 stemmed plant, growing 2 to 3 feet high, bearing an abundance of large, thin 

 toothed leaves, tapering to a point at both ends, and dense clusters of blue 

 flowers at the summit. It resembles the cardinal flower except for the difference 

 in color. Where too conspicuous this may be grubbed out with the hoe. 



CHICORY FAMILY, CICHORIACE^E. 



308 Chicory (P) *Cichorinm hitybus L. Is a European 

 plant that shows itself aggressive. Fig. 59 shows a cut 

 of branch with its pretty blue flower heads. The root is 

 large and deep and requires grubbing or close cutting with 

 the hoe. It is most complained of in southwestern Ohio, 

 where it infests the roadsides. Certainly capable of 

 proving a great pest if permitted to escape widely. 



Seeds black, somewhat four-sided, 1-12 inch long, 

 top with fringed borders. To be guarded against by 

 scrutiny of seeds. Like the dandelion and spinach, this 

 plant may be used for food. 



309 Fall Dandelion (P) *Leontodon autumnale L. This 

 European accession much resembles the common dandelion, 

 except that it has stiffer and longer stalks to the flowers. 

 Becoming widely scattered in Ohio. Seeds cylindrical, 

 elongated and transversely wrinkled. 



310 Bristly Ox=tongue, Worm Salad (B) *Picris echioides L. The seeds 

 of this plant come to us in alfalfa seed, and are cylindrical, about 1-10 inch 

 long, contracted to a neck above, reddish brown, and transversely wrinkled. 

 (See seed cuts). The plant which may occur already in the state, has bristly 

 leaves and yellow heads. 



311 Purple Salsify, Oyster Plant (P) *Tragopogon potrifolius L. and 

 312 Meadow Salsify (P) *T, pratense L. Are deep rooted plants with grass- 

 like leaves, milky juice and purple or yellow flowers. Both have escaped from 

 cultivation at many points and are liable to become prevalent weeds. The 

 white mold, Cystopus Tragopogonis (Pers.) Schroet., grows on these and on a 

 great variety of composites. 



Seeds large, brown, 1-2 inch long, striate and tuberculed, less tubercled in 

 last named, with long-stalked, hair-parachute. Perhaps not sufficiently 

 buoyant, by reason of the size of the seeds, to become as prevalent as prickly 

 lettuce. Plants destroyed by grubbing. 



Chicory . 

 {After Millspaugh.) 



