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IOWA ACADEMY OF SCIENCE 
Papilionaceae. 
i 
15. Baptisia leucantha, T. & G. Large White Wild Indigo. 
Widely distributed in prairies of this state, is generally avoided by stock. 
Two eastern species are regarded as poisonous, being emetics. It is probable 
that this species must be regarded as suspicious. 
151. Crotalaria sagittalis, L. Rattle-box. 
This is found in the western part of the state in the Missouri River Bot- 
toms. Produces a disease known as the Missouri Bottom disease, also as 
crotalism, by Dr. Stalker. The seeds contain an unnamed alkaloid found by 
Dr. Power. The plant is not only poisonous in the meadow, but also in hay. 
152. Lupinus albus, L. Lupine. 
The European lupine is occasionally cultivated and in Europe it pro- 
duces a disease known as lupinosus. Our native species, L. perennis, is also 
regarded as poisonous. Contains lupinin C 29 H 32 O 16 FH 2 O ; lupinidine C s Hi 5 N ; 
lupinine C21H40N2O2. 
153. Melilotus alba, Desv. White Sweet clover. 
Widely distributed in the state as a weed. The honey bees collect con- 
siderable quantities of honey from the Sweet Clover blossoms. It has been 
looked upon with suspicion. Dr. Schaffner states that the seeds impart a 
foul odor to the flour. 
154. Melilotus officinalis, Willd. Yellow Sweet Clover. 
Also widely distributed in the state. Objectionable like the preceding. 
155. Trifolium incarnatum, L. Italian or Crimson Clover. 
According to Coville, produces “hair” balls. This plant is occasionally 
cultivated as a cover crop in this state. 
156. Tephrosia virginiana, Pers. Goat’s Rue. 
Growing only in sandy soil in the eastern part of the state. Used by 
Indians as a fish poison. Several other species in South America and Mexico 
have been used in a similar way. One is called T. toxicaria, and is a well 
known fish poison. 
157. Robinia pseudacacia, L. Locust-tree. Black locust. 
This plant is frequently cultivated in the state, and in numerous places is 
an escape from cultivation. The roots, leaves and bark are very poisonous 
to man. Contains robinin C 25 H 20 O 16 + 5 1 / £H20. 
158. Robinia viscosa, Vent. Clammy locust. 
Cultivated as an ornamental plant; the roots are somewhat poisonous. 
159. Oxytropis lamberti, Pursh. Stemless Loco Weed. 
Found in the western part of this state, along the Missouri River and its 
tributaries, very abundant. One of the conspicuous loco or crazy weeds of 
the West. 
160. Vicia sativa, L. Common Vetch. 
A frequent weed in grain fields. The seeds of this are said to be injurious 
to pigs. It is not injurious to cows. Contains vicine C23H51N11O21. 
161. Phaseolus lunatus, Linn. Lima bean. 
Investigations carried on in Europe seem to indicate that the lima bean 
leaves in the wilted condition contain hydrocyanic acid. According to Guignard 
practically all varieties, whether wild or cultivated, were found to contain a 
principle which when acted upon by an enzyme yields hydrocyanic cacid. Pro- 
