SCROPHULARIACEAE 



1C9 



Stramonium. 

 Tatula. 



leaves ovate, long- 



1. L. vulgare { Ait. f. ) Dunal. Matrimony Vine. Glabrous, 3°-10° 

 long : leaves lanceolate, short-petioled : flowers on filiform peduncles, the 

 corolla purplish, 4'^ broad. — Locally common in waste places at Kansas 

 City, Sibley and Independence. July-September. 



6. DATURA L. JiMSON Weed, 

 Rank narcotic weeds with axillary short-peduncled, showy flowers. 

 Calyx prismatic, 5-toothed. Corolla funnel-form, its border plaited. 

 Fruit a prickly, imperfectly falsely 4-celled capsule. 



Stem green ; flowers white. 

 Stem purple; flowers violet. 



1. D. Stramonium L. 2°-5° high, glabrous 

 petioled, irregularly sinuate : flowers 3^-4^ long: lower prickles of the 

 fruit shorter than the upper. — Common in barn-yards. July-September. 



2. D. Tatula L. Closely resembles the last ; prickles of the fruit 

 about equal. — Common with the last. July-September. 



Family 110. SCROPHULARIACEAE Lindl. 

 Herbs with non-stipulate leaves and perfect flowers. Calyx and corolla 

 divisions 4-5 each, the corolla often 2-lipped. Stamens 2, 4 or 5, inserted 

 on and alternate with the corolla lobes. Ovary superior, 2-celled, usu- 

 ally many-seeded. Style one. Stigma entire or 2-lobed. Fruit a sep- 

 ticidal or loculicidal capsule. 



Fertile stamens five. 



Fertile stamens four with a fifth, sterile one, present. 

 Sterile stamen a mere scale. 

 Sterile stamen filiform. * 

 Stamens very woolly. 

 Stamens not woolly. 

 Corolla tubular. 

 Corolla deeply 2-cleft. 

 Stamens four ; all fertile. 

 Corolla spurred. 

 Corolla not spurred. 



Corolla plainly 2-lipped. 

 Stamens not enclosed in upper lip of corolla. 

 Calyx 5-angied, 5 toothed. 

 Calyx 5- parted. 

 Leaves pinnatifid. 

 Leaves not pinnatifid. 

 Stamens enclosed in upper lip of corolla. 

 Corolla scarcely 2-lipped. 

 Flowers on scapes 

 Flowers not on scapes. 

 Flowers yellow. 

 Flowers pinkish. 

 Fertile stamens two. 

 Calyx 5-parted. 



Sterile filaments short or wanting. 

 Sterile filaments long, 2-lobed. 

 Calyx 4-parted. 

 Leaves opposite. 

 Leaves whorled. 



