HYPOCISTIS, in the Materia Medica, an inspissated juice obtained from the sessile acaia, much resembling the true Egyptian acaia. They gather the fruit while unripe, and express the juice, which they evaporate over a very gentle fire, to the consistence of an extract, and then form into cakes, and expose them to the sun to dry. It is an astringent of considerable power; is good against diarrhoeas and haemorrhagies of all kinds; and may be used in repellent gargarisms in the manner of the true acaia; but it is very rarely met with genuine in our shops, the German acaia being usually sold under its name.