io8 Introduction to Botany. 



X. Bignonia capreolata, L. (L., capreolus, small tendril.) Cross Vine 

 Leaves long-petioled, 2-foliate, ending witii a tendril ; leaflets oblong-ovate. 

 Corolla 2 inches long, orange-red, puberulent without, yellow on the inside. Pod 

 about 6 inches long. 



II. CATALPA. Catalpa or Indian Bean or Candle Tree. 



(The aboriginal Indian name.) 



Trees or sometimes shrubs, with mostly opposite, simple, petioled, 

 ovate, or cordate leaves and showy white or mottled flowers. Tube of 

 the corolla much swollen, its limb 5-lobed and 2-lipped. Perfect sta- 

 mens 2, or sometimes 4. Capsule cylindric, long and slender, 2-celled. 

 Seeds flat, with lateral wings fringed on the border. 



1. Catalpa Bignonioides, Walt. {From proper name Bignon, and Gr., eidos, 

 form.) Catalpa. Tree with thin bark. Leaves mostly broadly ovate and entire, 

 acute or acuminate, strong scented. Corolla much spotted within, the lower lobe 

 entire. Often planted for shade tree. In woods in the Gulf States. 



2. Catalpa speciosa. Warder. (L., speciosus, showy.) Catalpa. Tree with 

 thick and rough bark. Leaves much as in the last species, but without strong 

 scent. Corolla little mottled within, the lower lobe emarginate. In rich woods. 

 Often planted. 



ACANTHACEJE. Acanthus Family. 



Mostly herbs, with opposite, simple leaves and regular, or only 

 slightly irregular, perfect flowers. Calyx 4-5-parted or cleft, persistent. 

 The gamopetalous corolla 5-lobed, nearly regular, or somewhat 2-lipped. 

 Perfect stamens 4, and didynamous, or only 2. Ovary superior, 2-celled, 

 with 2-10 ovules in each cavity. Seeds borne on curved projections 

 from the placentse. Capsule 2-celled, opening elastically by 2 valves 

 on drying. 



I. RUELLIA. 

 (Named for John Ruelle, herbalist.) 



Perennial herbs or shrubs, with entire, or rarely dentate, leaves and 

 large, solitary or clustered flowers in the axils of the leaves, or terminal. 

 Calyx 5-cleft or parted. Corolla funnel-form or salver-form, with large, 

 spreading border. Stamens 4. Ovules 3-10 in each cavity of the ovary. 

 Style recurved toward the apex. 



1. Ruellia strepens, L. (L., strepens, murmuring ; application not evident.) 

 Smooth Ruellia. Smooth or slightly pubescent perennial, i to 4 feet high. 

 Leaves oblong-ovate or oval on short petioles. Flowers solitary or clustered in 

 the axils. Divisions of the calyx linear-lanceolate. Corolla blue, about i^ to 2 



