34 SNAPDRAGON ORDER 
BLADDERWORT FAMILY 
BLADDERWORT  UTRICULARIA VULGARIS 
Plate 22, fig. 5 
The yellow flowers of the Bladderwort grow on erect branches 
from submerged stems 1-4 ft. long, and are found in lakes, ponds, 
etc. at 3000-12000 ft. The Bladderwort receives its name from the 
tiny black bladders which grow on the submerged, finely divided leaves. 
These little bladders serve as traps and absorptive organs for tiny 
animals in the water, and the plants thus live partly on insects, larvae, 
ere. 
BROOM-RAPE FAMILY 
BROOM-RAPE THALESIA UNIFLORA 
Plate 22, fig. 6 
The Broom-rape is a parasite and absorbs its food from the roots 
of its neighbors. This habit accounts for the pale color of both plants 
and blossoms, since all such robber-plants lose their green food-making 
matter through disuse. The flowers are violet-tinged and bloom in 
early summer. The plants may be found in damp woods at 5000- 
10000 ft. 
SNAPDRAGON FAMILY 
PINK BEARD-TONGUE PENTSTEMON SECUNDIFLORUS 
Pilate vo; ae al 
The Pentstemons or Beard-tongues receive both the scientific name 
of the genus and the common name from the sterile fifth stamen, which 
is characteristically very hairy in the Beard-tongues. They are closely 
