238 KEY AND FLORA 



I. SPECULARIA Fabricius 



Annual ; stems slender, angled. Leaves entire or toothed. 

 Flowers axillary, regular, solitary or in small clusters, ses- 

 sile, bracted. Calyx tube slender, 3-6-parted. Corolla wheel- 

 shaped, 6-lobed. Stamens with the filaments flattened and 

 shorter than the anthers. Ovary 3-celled, many-ovuled ; stig- 

 mas 3. Fruit a prismatic, 3-celled, many-seeded capsule.* 



1. S. perfoliata A. DC. Specularia. Stem erect, simple or 

 branched from the base, angles roughened, 10-20 in. high. Leaves 

 ovate to lanceolate, acute at the apex, sessile, crenate or entire, the 

 upper bract-like. Flowers solitary or in pairs. Corolla blue, often 

 wanting. Capsule cylindrical, smaller above. In waste places.* 



II. CAMPANULA L. 



Annual, biennial, or perennial herbs. Flowers solitary, 

 racemed or spiked, regular, blue or white. Calyx 6-lobed or 

 parted. Corolla wheel-shaped to bell-shaped, 6-lobed. Stamens 

 6, free from the corolla, distinct ; filaments dilated at the base. 

 Ovary 3-5-celled, many-ovuled ; style 3-parted. Capsule short, 

 bearing the persistent calyx lobes at its apex, many-seeded, 

 splitting open on the sides.* 



1. C. americana L. Tall Bellflower. Annual or biennial. 

 Stem erect, usually unbranched, 3-6 ft. high. Leaves varying from 

 ovate to lanceolate, serrate, 2^-6 in. long. Spike 1-2 ft. long. Corolla 

 wheel-shaped, light blue, about 1 in. in diameter. Moist, rich soil, 

 especially in thickets. 



2. C. rotundifolia L. Harebell. A slender, smooth, branching 

 perennial, 5-12 in. high. Root leaves broadly ovate-heart-shaped, 

 generally somewhat crenate, soon withering ; stem leaves varying 

 from linear to narrowly lanceolate, entire. Pedicels slender ; flow- 

 ers solitary or somewhat racemed, the buds erect but the fully 

 opened flower drooping. Calyx teeth erect, awl-shaped. Corolla 

 bell-shaped, i-l in. long, its lobes short and recurved. Rocky hill- 

 sides, especially N. 



3. C. aparinoides Pursh. Marsh Bellflower. Stem angular, 

 unbranched, slender, weak, and leaning on the grass among which it 

 usually grows, the angles clothed with minute, backward-pointing 

 prickles. Leaves lance-lineaT, nearly entire. Flowers terminal, about 

 ■J in. long, white. Corolla bell-shaped. Wet meadows, in tall grass. 



