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See also: stem of a perennial herb (Dorema See also: ammoniacum) , natural See also: order See also: Umbelliferae
.
The plant grows to the height of 8 or 9 ft., and its whole stem is pervaded with a milky juice, which oozes out on an incision being made at any See also: part
.
This juice quickly hardens into round tears, forming the " See also: tear ammoniacum " of commerce
.
" Lump ammoniacum," the other See also: form in which the substance is met with, consists of aggregations of tears, frequently incorporating fragments of the plant itself, as well as other See also: foreign bodies
.
Ammoniacum has a faintly fetid, unpleasant odour, which becomes more distinct on See also: heating; externally it possesses a reddish-yellow appearance, and when the tears or lumps are freshly fractured they exhibit a waxy lustre
.
It is chiefly collected in central See also: Persia, and comes to the See also: European market by way of Bombay
.
Ammoniacum is closely related to asafetida and galbanum (from which, however, it differs in yielding no umbelliferone) both in regard to the plant which yields it and its therapeutical effects
.
Internally it is used in conjunction with squills in bronchial affections; and in asthma and chronic colds it is found useful, but it has no advantages over a number of other substances of more See also: constant and active properties (See also: Sir See also: Thomas
See also: Fraser)
.
Only the " tear ammoniacum " is official
.
See also: African ammoniacum is the product of a plant said to beI Ferula lingitana, which grows in See also: North See also: Africa; it is a dark coloured gum-resin, possessed of a very weak odour and a persistent acrid taste
.
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