2S4 19. Parietaria. 9. URTICEiE. Pl.ex.mon. 



Parieiaria officinalis. Common pellitory-of-t he-wall. 



Leaves lanceolate, ovate, pointed, above somewhat shining; 

 beneath hairy, base 1-ribbed; leaflets of the involucrum 

 ovate; stem nearly erect. 



Parietaria, Raii Syii. 158 ; Ger. em. 330, 

 Parietaria vulgaris, Park. 437. 

 Parietaria officinalis, Lin. 1492. 



Walls and ruins ; perennial ; June to September. 



Stem much branched, reddish, shining ; leaves oblique, 

 blackish green, lateral ribs palmate, springing out above the 

 base. — Leaves strewed in granaries to drive away weevils ; 

 juice diuretic, contains nitre, sometimes in considerable 

 quantities. 



IV. 20. CANNABIS. Dioscorides. Hemp. 



DioicoiLS. — Male. Perigonium 5-sepaIed; stamens 5; 

 Jilaments short ; anthers oblong. — Fem. Perigonium oblong, 

 opening on the side ; ovary 1 ; styles 2 ; stigmata 2 ; peri- 

 carp crustaceous, 2-valved, rather globose, enclosed in the 

 perigonium ; corculmn curved, inverse ; cotyledons ovate, 

 thick; radicle incurved, above. — Herh erect; leaves stipuled, 

 digitate, the lower opposite, the upper alternate, the floral 

 sometimes simple ; male flowers on panicles, axillary or 

 terminal ; female 2, sessile, on the top of the twigs, with 

 the rudiment of a new shoot between them. 



Cannabis saliva. Cultivated hemp. 



Cannabis sativa, Raii Syn. 138; Lin. S. P. 



Cannabis mas, etfoamina, Ger. em. 708, 1 and 2. 



Cannabis sativa mas et foeiiiina, Park. 597. 



Male Female hemp. Barren hemp. Summer hemp. 



Female. Blale hernp. Steel hemp. Charl hemp. Winter hemp. 



Cultivated in rich land; annual; 7nale, July; female 

 August. 



Stem macerated in water, and dressed for its fibres, used 

 for cordage, strong linen, and paper: seeds boiled in milk 

 for coughs and the jaundice, also used to cause fowls and 

 birds to lay eggs ; and pressed for its oil. 



V. 21. XANTHIUM. Dioscorides. Ditch-burr. 



Monoicous. — Male. Involucrum many-leaved, many- 

 flowei-ed; cUnanthium paleaceous; perigonium tubular, five- 

 lobcd; stamens 5; a/2//ie'« approximate.— Fem. Involucrum 

 1 -leafed, oblong, 2-flowered, outside muricated, inside two- 



