VEGETABLE IRRITANTS. 67 



RHUS TOXICODENDRON {TV. America). 



POISON IVY. — TRAILING POISON OAK. 



Anacardiacece. — A shrub ; climbing by rootlets over rocksj 

 etc., or ascending trees. — Flowers greenish-yellow, in loose, 

 slender, axillary panicles. June. — Leaves alt., simple ; leaflets 

 3 ; rhombic, ovate, mostly pointed, rather downy beneath, 

 variously notched, sinuated, or cut-lobed. — Stem contains a 

 milky juice. 



Toxic principle.— ^YViOG&LlAC ACID. 



ANDIRA ARAROBA {Bahia). 



GOA-POWDER TREE. — ARAROBA-POWDER TREE. — BAHIA- 

 POWDER TREE. 



Leguminosce. — A tree ; 50ft. — Flowers yellow, in axillary or 

 terminal panicles. — Leaves alt., unequally pinnate ; leaflets 

 ovato-lanceolate, glabrous. — Pod drupaceous, greenish-yellow, 

 glabrous ; pulp fleshy, enclosing a single hard nut. 



rd;.w/r/««>5/«j-.— CHRYSiROBIN, CHRYSOPHANIC ACID. 



AUCUBA JAPONICA {Cultivated in Britain). 



BLOTCH ED-LEAVED L.\UREL.— SPOTTED LAUREL. — VARIEGATED 

 L.^UREL. — GOLD-LEAF PLANT. 



LoranthacecE.- Evergreen shrub, loft. — Flowers dioecious, in 

 panicles ; petals 4, purple-brown ; May-July. — Leaves opp., 

 petiolate, ovate-lanceolate, acuminate, toothed, leathery, 

 glabrous, spotted with yellow ; midrib prominent. — Fruit one- 

 seeded, scarlet. 



VISCUM ALBUM {British). 



COMMON MISTLETOE. 



Loranthace(E. — A parasitic shrub. — Stems forked. — Leaves 

 opposite. Dioecious. — On apple and other trees. March-May. 

 Yellowish. — Berries white. 



LEPIDIUM LATIFOLIUM {British). 



BROAD-LEAVED PEPPER WORT. — BROAD-LEAVED PEPPER 

 CRESS. — DITTANDER. — DITTANY. 



CrucifercB. — Leaves ovato-lanceolate ; serrate. — Fruit oval. — 

 Salt marshes. — 2ft. Perenn^ — July- White. 



Toxic principle. — ACRID JUICE, also contained in L. cam- 

 pestre, L. piscidium, L. sativum, L. virginicum. 



