DICOTYLEDONOUS PLANTS 209 
92. LENTIBULARIACEZ. BLiappERworT FAMILY. 
Scape-bearing herbs, chiefly aquatic or living in marshes. 
Leaves are often thread-like and floating, without stipules. 
Flowers irregular. Calyx free from the ovary, persistent. 
Corolla hypogynous, 2-lipped, the tube short, spurred at the 
base. Stamens 2, opposite the lateral sepals, hypogynous or 
inserted on the corolla-tube. Ovary free, 1-celled; style 
short, thick, stigma 2-lipped, ovules many. Capsule 2-valved 
or bursting irregularly, many-seeded. 
UTRICULARIA, L. 
Aquatic or terrestrial herbs, often floating and propagated 
by buds which break loose from the plant and sink to the 
bottom of the pond or stream during the winter. Leaves of 
the aquatic species floating, thread-like, furnished with little 
bladders in which animalcules are caught. Flowers often 
rather showy, solitary, spiked or racemed. Corolla with its 
throat nearly closed by the palate. Capsule globose, bursting 
irregularly. 
1. U. cornuta, Michx. HornED BLADDERWORT. Stemless. Leaves 
linear and entire’ or none; air bladders few or none. Scape erect, 
stout, 2—5-flowered, 8-12 in. high. Flowers yellow, fragrant, 2 in. 
wide. Pedicel as long as the calyx. Lips of the corolla obovate, 
unequal, the lower longer, abruptly pointed, the sides reflexed, as 
long as the horn-shaped, curved spur, throat bearded. Seeds minutely 
pitted. In swamps and muddy places.* 
2. U. subulata, L. Smartzt BLappERwor?T. Scape thread-like, 
2-6 in. high. Leaves few and awl-shaped or none; air bladders few 
or none. Racemes zigzag, 1—6-flowered ; pedicels much longer than 
the calyx. Corolla yellow, + in. wide, the lower lip 3-lobed, longer 
than the appressed, conical, green-pointed spur. Wet, sandy soil.* 
3. U. inflata, Walt. SwoLLeN BLADDERWORT. Perennial; stem 
very slender, floating. Leaves finely dissected, the lower ones scat- 
tered, the upper ones whorled; the petioles dilated upward and 
inflated, air bladders very numerous. Scape stout, 6-12 in. high, 
3-10-flowered. Corolla yellow, about 2 in. wide, upper lip ovate, 
slightly lobed, lower lip 3-lobed, twice the length of the curved, 
emarginate spur. Fruit nodding. In ponds and still water.* 
