BOTANIC MATERIA MEDICA. 221 
to be called seed, because they are the unex- 
panded flower head of a doubtful species of the 
Artemisia, As they occur in commerce and 
the stores, they are obtuse in shape, of a grayish 
green color and glossy, about ;4, of an inch (2 
millimeters) long, and under a glass of 5 or 6 
diameters present to view an involucre of 
many imbricated glandular scales enclosing 
five florets. Odor of Santonica is peculiar; 
taste aromatic and camphor-like; they contain 
resin, gum, volatile oil and santonin, which 
glucoside occurs in white acicular crystals, in- 
clining to yellow when long kept or exposed to 
the sun’s rays. Its active principle Santonin is 
the only officinal preparation. For further ac- 
count see U. S. Dispensatory. 
Anthemis Nobilis, Chamomile, Roman 
‘Chamomile.—Natural order Composite. This 
little perennial is native of England and the 
central and southern parts of Europe. It is 
quite extensively cu tivated at Mitcham, also in 
France, Belgium and Saxony. Like this order 
of plants it has perennial roots with many long 
fibers. When in a wild state the stem is some- 
what procumbent, but in the cultivated, erect, 
and about 12 nches (30 centimeters) or more in 
height, much branched, leafy, hollow and fur- 
rowed. The leaves are doubly pinnate; leaf- 
lets linear, subulate, (awl-shaped) and slightly 
hollow. The flowers solitary, terminal with a 
convex disk of yellow tubular flowers. The ray 
florets numerous, white, pistillate, three toothed 
and star-shaped. Receptacle conical, with mem- 
branous scales; akenes (flint) obtusely four- 
sided, smooth and without pappus. There are 
