202 FOUNDATIONS OF BOTANY 



Corolla wheel-shaped, stamens 5. Verbascum, I. 



Corolla wheel-shaped or salver-shaped, nearly regular, stamens 2. 



Veronica, VI. 



Corolla 2-lipped, the mouth closed by a palate, tubular below, a 



spur at the base. Linaria, II. 



Corolla 2-lipped, the mouth closed by a palate, tubular below, a 



short, broad pouch at the base. Antirrhinum, III. 



Corolla decidedly 2-lipped. 



Stamens with anthers 2. Gratiola, V. 



Stamens 4, with a fifth antherless filament. Pentstemon, IV. 

 Stamens 4, the anther-cells unequal. Castilleia, VII. 



Stamens 4, the anther-cells equal. Pedicularis, VIII. 



I. VERBASCUM, L. 



Biennial ; stem tall, erect. Leaves alternate. Flowers in 

 spikes, racemes or panicles. Calyx deeply 5-cleft. Corolla 

 wheel-shaped, 5-lobed, the lobes nearly equal. Stamens 5, 

 unequal, declined, some or all of the filaments bearded. 

 Style flattened at the apex. Fruit a globose capsule ; seeds 

 roughened.* 



1. V. Blattaria, L. MOTH MULLEIN. Stem erect, slender, sim- 

 ple or sparingly branched, smooth below, downy above, 2-4 ft. high. 

 Leaves oblong to lanceolate, acute at the apex, obtuse or truncate at 

 the base, dentate to pinnately lobed, the lower petioled, the upper 

 sessile and clasping. Raceme long and loose, glandular-downy, 

 pedicels bracted. Corolla white or yellow, marked with brown on 

 the back, about 1 in. wide. Filaments all bearded with purple 

 hairs. Capsule longer than the calyx. Common in fields and waste 

 places ; introduced from EuTope.* 



n. LINARIA, Tourn. 



Herbs, rarely shrubby. Lower leaves opposite, whorled or 

 alternate. Flowers in bracted racemes or spikes or axillary 

 and solitary. Calyx 5-parted. Corolla 2-lipped, the tube 

 spurred. Stamens 4, with sometimes a rudiment of a fifth. 

 Stigma notched or 2-lobed. Capsule ovoid or globose ; cells 

 nearly equal. 



