222 A COMPENDIUM OF 
two varieties of the Chamomile flowers; the sim- 
ple or single and the Flore-pleno, or double; 
they bloom in July and August. Anthemidis 
Flores, Chamomile Flowers, have an odor aro- 
matically pleasant, and they contain Anthe- 
mene, which occurs in needle-like crystals, 
melting at a low degree of temperature; vola- 
tile oil, and the isobutylic and isamylic ethers 
of isobutyrica and angelic acids, (see oil) also 
resin and tannin. ‘The flowers are tonic, car- 
minative and somewhat stimulating in their ef- 
fects and are given in form of an infusion and 
fluid extract in doses of 15 to 60 grains (1 to 4 
grams). 
Humulus, Hops; the flowers of the Humu- 
lus Lupulus.—Natural order Urticacez, or, as 
some botanists think, the Cannabinee. The. 
Hop vine is a native of Asia, but now. found 
gtowing wild in many parts of Europe. It is 
now cultivated as an article of commerce in 
many parts of the world. The hop is a clam- 
bering vine, with a perennial root and annual 
stem, which is adorned with alternate and op- 
posite leaves. The first named are cordate in 
shape, and have long, twinin g petioles, occupy- 
ing the upper portions of the stem, whilst the 
lower and opposite leaves are larger, and have 
from 3 to 5 lobes, a prickly pubescence, and 
their margins serrated, 
The flowers of the hop vine are very numer- 
ous, of a greenish-yellow color, and infloresce 
in axillary panicles. Male and female flower 
on separate plants. The fruit or hop is made 
up of sepals or enlarged bracts, the whole be- 
ing known technically as a strobile or catkin. 
