RUCALYPTUS TREES. 313 
Hedeoma pulegioides, Persoon.—The Pennyroyal 
of North America. An annual herb of aromatic taste, 
employed in medicine. - 
Hedysarum coronarium, L.* ~The Soola Clover. 
South Europe. One of the best of perennial fodder- 
herbs. It carries with it also the recommendation of 
being extremely handsome. 
VWelianthus annuus, L.* — The Sunflower. Peru. 
This tall, showy and large-flowered annual is not with- 
out industrial importance. As much as 50 bushels of 
seeds or rather seed-like nutlets have been obtained 
from an acre under very favorable circumstances, and 
as much as 50 gallons of oil can be pressed from such 
“a crop. The latter can be used not only for machin- 
ery, but even as one of the best for the table. Other- 
wise the seeds afford an excellent fodder for fowl. 
The stalks furnish a good textile fibre, and the blos- 
soms yield a brilliant, lasting, yellow dye. About 6 
Ibs. of seeds are required for an acre. The plant likes 
calcareous soil. Several allied North American spe- 
cies deserve perhaps rural culture. The return from 
a sunflower field is attained within a few months. 
Helianthus tuberosus, L.—Brazil. Sunflower Arti- 
choke. Inappropriately passing under the name Je- 
rusalem Artichoke. The tubers are saccharine and 
serve culinary purposes. The stem is rich in textile 
fibre. The percentage of crystalline sugar is largest 
during the cold season—namely, five to six one hun- 
dredths. During the Summer the starch-like Inulin 
prevails. This plant can only be brought to full per- 
fection in a soil rich in potash. 
Heliotropium _Peruvianum, L.— Andes of South 
America. A perennial, somewhat shrubby plant, 
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