252 SYSTEMATIC BOTANY. 



3. C. AMERICANA {American Bell-flower}. Stem erect, virgate, nearly 

 simple ; leaves ovate-lanceolate, tapering at both ends, serrate, slightly hairy, 

 with ciliate petioles ; the lowest sometimes cordate ; flowers large, blue, near- 

 ly rotate, deeply cleft, axillary, sessile, solitary, or several together ; calyx- 

 teeth subulate, shorter than the corolla. In cultivation. July-August. 



4. C. MEDIUM (Canterbury Bell}. Stem erect, simple, hispid ; leaves 

 lanceolate, obtusely serrate, sessile, with 3 veins at base ; flowers very large, 

 broad at base, with a reflexed limb, deep blue, erect. In gardens. 



2. Specularia. Calyx 5-lobed. Corolla rotate, 5-lobed. Stamens 

 with hairy filaments. Style hairy, included. Stigmas 3. Capsule pris- 

 matic, 3-celled, opening by 3 lateral valves. 



5. PERFOLIATA (Clasping Bell-flower). Stem erect, simple, somewhat 

 pubescent ; leaves nearly orbicular, clasping and cordate at base, crenate ; 

 flowers sessile, deep blue ; the upper ones only opening ; corolla with spread- 

 ing segments ; calyx-segments acute, lanceolate. In dry, sandy fields, 8'-i2' 

 m S n - June-July. 



3. Lobelia. Calyx 5-cleft, with a short tube. Corolla tubular, ir- 

 regular, deeply cleft on the upper side ; upper lip nearly erect, 2-cleft ; 

 lower lip spreading, 3-cleft. Capsule 2-celled, opening at summit. 

 Seeds minute, many. 



1. L. CARDINALIS (Cardinal Flower}. Stem erect, simple ; leaves ovate- 

 lanceolate, acute, serrate ; flowers deep scarlet, large, in a long, terminal 

 raceme ; bracts linear, leaflike ; pedicels short ; corolla much longer than the 

 calyx. In low grounds, 2-3 feet high. July-September. 



2. L. SPICATA (Slender Lobelia). Slightly pubescent ; stem erect, sim- 

 ple, slender ; radical leaves oblong, or spatulate, all but the uppermost den- 

 tate ; flowers small, pale blue, in long, spicate racemes ; bracts narrow-linear, 

 nearly as long as the pedicels ; calyx-teeth as long as the corolla, subulate. 

 In fields, 1-2 feet high. July-August. 



INFERIOR MONOPETALOUS EXOGENS WITH 

 REGULAR FLOWERS. 



Order XLVII. ERICACEAE (Heath Family). 

 Shrubs ; or evergreen or leafless herbs. Leaves simple, alter- 

 nate, rarely opposite, often evergreen. Stipules none. Calyx- 

 tube usually free from the ovary, sometimes adherent ; limb 4-6, 

 usually 5-cleft, rarely entire. Corolla regular, or sometimes irregu- 

 lar, 4-6, usually 5-cleft, rarely with 5 distinct petals. Stamens 

 inserted with the corolla. Anthers 2-celled, opening by pores, 

 often appendaged at top. Ovary 2-io-celled. Style I. Stigma 

 i. Fruit a berry, drupe, or capsule. 



