RIGIDELLA—ROMAN SQUILL. R01 
RIGIDELLA, 
R. flammea, a native of Mexico, is the best repre- 
sentative of this small genus of plants, where it grows 
from three to five feet high, with very broad and curi- 
ously plicate leaves, which look as though they had been 
artificially plaited by the hands of a skillful workman. 
The flowers are numerous, all issuing from one spathe, 
and opening only one at a time. They are very hand- 
some, from the brilliancy of their color and the peculiar- 
ity of their form. It is a summer flowering bulb, to be 
treated in the same manner as the Tigridia. 
ROMAN HYACINTH. 
See Page 153. 
ROMAN SQUILL or BELLEVALIA., 
This flower is usually classed with the genus Hya- 
cinthus, Page 156. It is a hardy, bulbous plant, well 
adapted for spring bedding or for forcing for cut flow- 
ers. The leaves are few and near the ground. It is 
propagated by offsets, and also by seeds, which should 
be sown as soon as ripe. 
Bellevalia romana (Hyacinthus romanus) (Roman 
Squill).—The small, whitish, bell-shaped flowers are 
borne in racemes. A native of Italy, and the best 
species for forcing. 
B. syriaca (Syrian Squill).—Flowers whitish or 
violet, tinged with green. A native of Syria. 
ROMUELA. 
See Trichonema, Page 278. 
SANGUINARIA, 
Bloodroot. 
S. canadensis.—The common Bloodroot of our 
woods is a herbaceous, tuberous-rooted plant, well wor- 
