(292) 



6367. Wild cherry. — The flowering and fruiting branches of Padus virginiana (L.) 



Mill. (See No. 2614). The leaves and seeds yield prussic acid when taken 

 into the stomach with water, and both have caused death. Collected by 

 J. K. Small at Columbia, Pennsylvania, May and July, 1891. 



6368. Locust. False Acacia. — The flowering branches of Robinia pseudacacia L. 



(See No. 5209). Bark and seeds narcotic-poisonous. Collected by J. K. 

 Small in Smith County, Virginia, May 14, 1892. 



6369. Wild indigo. Dyer's green-weed. (See No. 1297). The roots are medicinal 



and poisonous in over-doses. 



6370. The roots of the preceding species. 



6371. Wood-sorrel. Ladies' sorrel. Shamrock. — The flowering plant of Oxalis 



Acetosella L. (See No. 2677). Contains oxalic acid and has caused 

 poisoning when eaten in excess as a salad. 



6372. Castor-oil plant. — The flowering branches of Ricinus communis L. (See 



No. 1656). The seeds are violently poisonous. 



6373. The seeds of the preceding. 



6374. Rue. Garden rue. Ruta. — The flowering branches of Ruta graveolens L. 



(See No. 2688). It contains an extremely poisonous volatile oil. 



6375. Poison ivy. Three-leaved ivy. Mercury. — The flowering and fruiting 



branches of Toxicodendron radicans (L.) Kuntze (Anacardiaceae — Sumac 

 Family). Native of eastern and central North America. The plant 

 contains a fatty oil that produces intense poisoning of the skin of many 

 persons. Collected by J. K. Small at Lancaster, Pennsylvania, August 15, 

 1899. 



6376. The same in formaldehyde solution. 



6376.1. Spotted touch-me-not. — The herbage of Impatiens biflora Walt. (Bal- 

 saminaceae — Balsam Family). Native of eastern and central North 

 America. Collected by H. H. Rusby. The fresh juice is said to be an 

 antidote to ivy poisoning, and it is therefore here included. 



6377. Poison dogwood. Poison oak. Poison sumac. — The flowering and fruiting. 



branches of T. Vernix (L.) Kuntze. Native of eastern North America. 

 Poisonous like No. 6375. Collected by P. Wilson at Woodlawn, New 

 York, August 17, 1899. 



6378. Poison oak. — The branches of T. diver sifolia (Engelm.) Greene. Native 



of western North America. Collected by H. H. Rusby in the San Ber- 

 nardino Mountains, California, August 3, 1909. Poisonous like the pre- 

 ceding. 



6379. Dwarf poison oak. — The branches of T. Rydbergii (Small) Greene. Native 



of the Rocky mountains. Poisonous like the preceding. Collected by 

 H. H. Rusby in Buffalo Creek Canon, Colorado, September 14, 1909. 



6380. Guao. — The leaves of Comocladia cladophylla Rich. (Same family). Native 



of the West Indies. Violently poisonous like the preceding. Collected in 

 Cuba, July, 1906, and presented by H. H. Rusby. 



6381. Cardol. — A fatty poisonous substance existing in the preceding five species 



and in many others of the same family. Presented by Merck & Company. 



6382. Horsechestnuts. Aesculus. — The flowering and fruiting branches of Aesculus 



Hippocastanum L. {llippocastanaceae — Horse-chestnut Family). Native 

 of Asia and everywhere cultivated for ornament. The seeds and the bark 

 are poisonous. Collected in the New York Botanical Garden. 



