Oleæ folia. Olive leaves: they are hard to come by here.
Ononis. Restharrow. See the roots.
Ophioglossum. Adder’s-tongue. The leaves are very drying: being boiled in oil they make a dainty green balsam for green wounds: taken inwardly, they help inward wounds.
Origanum. Origany: a kind of wild Marjoram; hot and dry in the third degree, helps the bitings of venomous beasts, such as have taken Opium, Hemlock, or Poppy; provokes urine, brings down the menses, helps old coughs; in an ointment it helps scabs and itch.
Oxylapathum. Sorrel. See Acetosa.
Papaver, &c. Poppies, white, black, or erratick. I refer you to the syrups of each.
Parietaria. Given once before under the name of Helxine.
Pastinæa. Parsnips. See the roots.
Persicaria. See Hydropiper. This is the milder sort of Arsmart I described there: If ever you find it amongst the compounds, take it under that notion.
Pentaphyllium. Cinquefoil: very drying, yet but meanly hot, if at all; helps ulcers in the mouth, roughness of the wind-pipe (whence comes hoarsness and coughs, &c.) helps fluxes, creeping ulcers, and the yellow jaundice; they say one leaf cures a quotidian ague, three a tertain, and four a quartan. I know it will cure agues without this curiosity, if a wise man have the handling of it; otherwise a cart load will not do it.