132 HENNA HOLLY HOLLYHOCK. 



HENNA. Lawsonia alba, Lamk. 



N.O. Lythroce*. 

 Syn. Henne, Alhenna. 



Part used Leaves. 



Action Astringent. The Indian natives ascribe 

 wonderful properties to this plant, and use it in head- 

 ache, smallpox, leprosy, &c. Its greatest use is as 

 a dye for the nails of the hands and feet, and in Europe 

 for the hair. 



Distinctive character Leaves opposite, shortly 

 stalked, smooth, lanceolate, mucronate, entire at the 

 revolute margins, about i inch long, if inch wide, 

 lateral veins incurved at their apex. Taste, slightly 

 astringent. Odour, tea-like. 



A section of the leaf shows a double row of palisade 

 cells and numerous cluster crystals of Calcium Oxalate. 



HOLLY. Hex Aquifolium, Linn. 



N.O. Aguifoliacea. 

 Syn. Holm, Hulm, Hulver Bush. 



Parts used Leaves, berries. 



Action Febrifuge, cathartic. The leaves have been 

 used in fevers and rheumatism, the berries in dropsy. 



Distinctive character The leaves are about 2 inches 

 long and i^ inch broad, oblong-ovate, shiny, leathery, 

 with a spiny margin, but some leaves are almost free 

 from spines. Taste and odour, none. 



HOLLYHOCK. Althaea rosca, Linn. 



N.O. Malvocea. 



Syn. Common Hollyhock, Garden Hollyhock. 

 Part used Flowers. 



Action Emollient, demulcent, diuretic. Useful in 

 chest complaints ; its action is similar to Marsh- 



