326 SCROPHULARIACEAE. 



1. P. parviflora (Lehm.) Juss. Small, prostrate or diffusely 

 spreading, more or less pubescent, annual; leaves oblong-linear or 

 spatulate, rather fleshy, nearly sessile, 12 cm. long or less; peduncles 

 very short; calyx-lobes resembling the smaller leaves; corolla purple, 

 the tube pale or yellowish, 8 mm. long, funnelform, its lobes short, 

 retuse, slightly unequal; capsule small, ovoid. 



Occasional on margins of ponds and along streams, especially in 

 subsaline places. June-August. 



Family 94. SCROPHULARIACEAE. Figwort Family. 

 Herbs or shrubs with opposite or alternate exstipu- 

 late leaves and perfect irregular flowers. Calyx per- 

 sistent, 4-5-toothed or 4-5-divided. Corolla 2-lipped or 

 nearly regular. Stamens 2, 4 or 5, didynamous or 

 nearly equal, inserted on the corolla and alternate with 

 its lobes; anthers 2-celled or confluently 1-celled, longi- 

 tudinally dehiscent. Ovary superior, 2-celled or rarely 

 1-celled; ovules mostly numerous, borne on the axillary 

 placentse; style simple; stigma entire or 2-lobed. Fruit 

 mostly capsular and septicidally or loculicidally dehis- 

 cent. Seeds often reticulated or striate. 



Fertile stamens 5. 1. Verbascum. 



Fertile stamens 2 or 4. 



Leaves opposite or the uppermost sometimes 

 alternate. 

 Corolla spurred or saccate at base. 



Corolla-tube with a spur at base. 2. Linaria. 



Corolla-tube with a sac at base. 3. Antirrhinum. 



Corolla without a sac or spur at base. 

 Fertile stamens 4. 



Fifth stamen represented by a fila- 

 ment, scale or gland. 

 Sterile stamen represented by 

 a filament or scale. 

 Sterile stamen a scale ad- 

 nate to the upper side of 

 the corolla. 4. Scrophularia. 



Sterile stamen represented 



by a sterile filament. 5. Pentstemon. 



Sterile stamen reduced to a 

 gland at the base of the 

 corolla. 6. Collinsia. 



Fifth stamen wholly wanting. 

 Shrubs; capsule dehiscing 



down one side. 7. Diplacus. 



