THE BUTTERWORT FAMILY 
[ORDER LVII. LENTIBULARIACE/E] 
CALYX of 2-5 SEPALS, partially united 
together in different ways, more or less 
2-lipped (bilabiate), remaining with the 
fruit (persistent), free from and inserted 
below the seedcase (inferior). 
COROLLA of 2-5 PETALS, united into 
a tube which is spurred at the base, and 
separating into 2 lips (bilabiate), the upper 
lip being shorter and 2-lobed and the lower 
lip 3-lobed or undivided, inserted below 
the seedcase (hypogynous). 
STAMENS 2, included in the corolla-tube, 
inserted on the base of the corolla (epi- 
petalous). 
PISTIL of 2 CARPELS united into a 
1 -celled seedcase, 1 style, and a stigma 
with 2 unequal lobes. 
FRUIT a roundish pointed capsule, 1 -celled, 
many-seeded, with the seeds attached to a 
central column (free central placenta), open- 
ing by 2 valves, or bursting irregularly or 
transversely. 
FLOWERS with the petals irregularly 
arranged, solitary or several together in 
a cluster (raceme) on a leafless stalk 
(scape). 
LEAVES in the bog plants entire and all 
from the root, in a rosette ; in the water 
plants finely divided or absent. 
DISTINGUISHED by the 2-lipped spurred 
corolla, the 2 stamens, and the 1 -celled 
capsule. 
A LL the members of this order are bog or water plants. They resemble the Snapdragon 
Family in their spurred 2-lipped corolla, but differ from it in having only 2 stamens and 
a i-celled capsule. 
The order is a small one and is spread over most parts of the world 
The two genera native to the British Isles are both carnivorous. One captures its prey by 
means of sticky glands on the surface of the leaves and the other by small bladders borne on the 
leaves which are all submerged. 
I. Bladderwort (UtriculAria). Flowers usually in clusters ; calyx of 2 sepals, the lower 
often notched ; corolla-throat closed by a projecting palate ; usually water plants without 
roots and with much divided leaves and with bladders. 
II. Butterwort (Pinguic'ula). Flowers solitary ; calyx of 5 sepals, 2-lipped ; corolla gaping ; 
bog plants with the leaves all from the root. 
I. BLADDERWORT. (UTRICULARIA. Linn.) — Flowers yellow, purple, or blue, solitary or 
in clusters terminating leafless stalks from the root (scapes). Sepals 2, only just united at the 
base, the lower often notched, and the upper entire, free from and inserted below the seedcase 
(inferior) ; petals united into a tube which is spurred at the base, and dividing into 2 lips, the 
throat of the tube being closed by the prominent projecting palate of the under lip (personate) ; 
8S 
