Jan., 1904 .] Poisonous and Other Injurious Plants. 
73 
205. Daucus carota ly. Wild Carrot. Persons handling the plant 
are often poisoned, especially when the plant is wet with 
dew. Causes large blisters to form. 
206. Cornus florida P. Flowering Dogwood. The berries are 
reputed to be poisonous. 
207. Cephalanthus occidentalis P. Button-bush. Contains a 
poisonous princij^le. 
208. Pobelia cardinalis P. Red Pobelia. Cardinal Flower. 
209. Pobelia syphilitica P. Blue Pobelia. 
210. Pobelia puberula INIx. Downy Pobelia. 
21 I. Pobelia spicata Pain. Pale vS]>iked Pobelia. 
212. Pobelia leptostachys A. DC. Spiked Polielia. All the 
aliove acrid and poisonous. 
213. Pobelia inflata P. Indian Tobacco. \'ery poi.sonous, nar- 
cotic and acrid. 
214. Pobelia kalinii P. Kahn’s Pobelia. 
215. Pobelia nuttallii R.&S. Nuttall’s Pobelia. Both the above 
acrid and poisonous. 
216. Ambrosia artemisiaefolia P. Roman Ragweed. The pollen 
has an irritant action upon the muceus membranes ; 
cause of hay fever. 
217. Xanthium spinosum P. Spin}" Clotlmr. The seeds and 
probably the whole plant poisonous. 
218. Xaulhium strumarium P. Euro]iean Cocklebur. Young- 
seedlings and seeds probably jioisonous to hogs. 
219. Xanthium canadense Mill. American Cocklebur. Young 
.seedlings poisonous to hogs. 
220. Plupatorium perfoliitum P. Boneset. Emetic in large doses. 
221. Rudbeckia laciniata P. Tall Cone Elower. Supposed to 
be fatal to sheep and hogs. 
222. Bidens frondosa P. Black Beggar-ticks. Produces an 
itching .sensation to some persons. 
223. Helenium autumnale P. Sneezeweed. Plant and also 
flowers poisonous to cattle, sheep and horses. 
224. Helenium nudiflorum Xutt. Purple-head Sneezeweed. 
Poi.sonous. 
225. Helenium tenuifolium Xutt. Slender-leaf Sneezeweed. 
Poisonous. Suppo.sed to be fatal to horses and mules. 
226. Aiithemis cotula P. Ma3'weed. Will sometimes blister the 
skin. Has a disagreeable odor. 
227. Artemisia absinthium P. Common Wormwood. The vola- 
tile oil of this plant is a violent, narcotic poison. 
228. Arctium lappa P. Great Burdock. Produces an itching 
sensation to some persons. 
229. Cichorium intybus P. Cliicor}-. When fed in large quan- 
tities to dairy cattle it imparts a bitter flavor to the milk 
and butter. 
