356 Scrophulariaceae 



Leaves alternate. 



Anther-bearing stamens 5. 1. VERBASCUM. 



Anther-bearing stamens 4. 



Calyx-tubular, 2-cleft, the segments entire or toothed. 



11. CASTILLEJA. 



Calyx tubular or campanulate, 4-cleft. 12. ORTHOCARPUS. 



Calyx spathe-like, of 2 distinct bract-like divisions, or the anterior 



division wanting. 13. ADENOSTEGIA. 



Calyx narrowly campanulate, 2-5-toothed; leaves pinnately divided. 



14. PEDICULARIS. 

 Leaves opposite or the upper sometimes alternate. 



Corolla-tube with a sac at the base. 3. ANTIRRHINUM. 



Corolla-tube with a spur at the base. 2. LINARIA. 



Coralla-tube without a sac or spur at the base. 



Stamens with anthers 4, the fifth represented by a scale adnate to the 

 upper side of the corolla. 4. SCROPHULARIA. 



Stamens with anthers 4, the fifth represented by a sterile filament. 



5. PENTSTEMON. 

 Stamens with anthers 4, the fifth represented by a gland at the base of 



the corolla. 6. COLLINSIA. 



Stamens with anthers 4, the fifth stamen wholly wanting. 



Shrubs ; calyx prismatic. 7. DIPLACUS. 



Herbs; calyx prismatic. 8. MIMULUS. 



Stamens 4, 2 sterile. 9. MIMETANTHE. 



Stamens 2; corolla nearly regular. 10. VERONICA. 



1. VERBASCUM L. MULLEN. 



Biennial or rarely perennial, mostly tall and erect 

 herbs, with alternate leaves and rather large showy 

 flowers in terminal spikes, racemes or panicles. Calyx 

 5-parted. Corolla rotate, 5-lobed, the lobes slightly un- 

 equal. Stamens 5, inserted on the base of the corolla, 

 unequal ; filaments of the 3 upper or of all pilose ; 

 anther-sacs confluent into 1. Ovules numerous ; styles 

 dilated and flattened at the summit. Capsule globose 

 to oblong, septicidally 2-valved ; the valves usually 

 2-cleft at the apex. Seeds numerous, rugose. 



1. V. virgatum With. Stems about 1 m. high, stout, pubescent 

 and glandular throughout ; lowest leaves 1-2 dm. long, oblong-ovate 

 or oblong-lanceolate, crenate, the upper similar but smaller and 

 decurrent on the stems ; raceme narrow, spike-like, 5 dm. long or 

 more ; flowers somewhat clustered or solitary in the axils of the 

 much reduced bract-like leaves, nearly sessile or short-pedicelled - f 



