210 PINGUICULACEAE (BLADDERWORT FAMILY) 



BB. Pedicels 0-3 mm. long; stem simple. E. O. ludoviciana 



AA. Calyx lobes equaling or shorter than the tubes; stem branched above; flowers 



nearly sessile. E. O. pinorum 



PINGUICULACEAE (BLADDERWORT FAMILY) 



Herbs, in water or on damp soil. Flowers perfect; pedicels brac- 

 teolate. Calyx 2-5-parted. Corolla spurred at base, 2 -lipped; 

 upper lip plicate, entire or 2-lobed; lower lip larger, 3-lobed, with 

 a palate. Stamens 2. Ovary superior, ovoid or globose, i -celled; 

 style short or none; stigma 2-lobed. Fruit a capsule. Seeds many. 



A. Terrestrial plants; leaves entire; flowers purple- violet. W. C. E. (L. pin- 



guis = fat; the leaves have a fatty feel.) Pinguicula vulgaris (BUTTERWORT) 



AA. Aquatic or marsh plants; leaves dissected or apparently none; flowers yellow. 



UTRICULARIA (p. 210) 



UTRICULARIA (BLADDERWORT) 



Free-floating or mud-anchoring. Leaves finely divided in nearly all, 

 sometimes apparently none, bladder-bearing in most water species, with a 

 few mud-covered bladders or none in mud species. Flowers yellow, con- 

 spicuous, elevated above the water, very rare. 



A. Leaf segments terete, their margins entire. 



B. Leaves 12-25 mm. long, 2-3-pinnately segmented, very bladdery; bladders 3-4 



mm. long. W. C. E. U. vulgaris 



BB. Leaves 4-8 mm. long, several times forked, with few or no bladders; bladders 



1-2 mm. long. 



C. Corolla spur short, obtuse. W. C. U. minor 



CC. -Corolla spur conic, acute. C. U. occidentalis 



AA. Leaf segments flat, their margins minutely bristle-toothed; leaves 6-12 mm. 

 long, repeatedly forked; bladders nearly always on leafless branches. C. E. 



U. intermedia 



PLANTAGINACEAE (PLANTAIN FAMILY) 



Herbs, acaulescent. Leaves basal. Flowers small, perfect or im- 

 perfect, in spikes or heads; clusters terminal, on scapes. Calyx 

 4-parted, persistent. Corolla scarious or membranous, 4-lobed. 

 Stamens 2 or 4, on the corolla. Ovary superior, i-4-celled; style i. 

 Fruit a capsule, opening by a lid. Seeds i to several. Only the 

 following genus. 



PLANTAGO (PLANTAIN) 

 Flowers greenish or purplish. (The Latin name.) 



A. Leaves ovate. W. C. E. P. major (COMMON PLANTAIN) 



AA. Leaves lanceolate. 

 B. Seeds 1-2, flat or concave on the face. 



