POPULAR FLORA. 



175 



61. PIGWORT FAMILY. Order SCROPHULARIACEiE. 



Herbs with a 2-lipped or more or less irregular monopetalous corolla, and 4 stamens 

 in pairs (2 long and 2 short), or only 2 perfect stamens; 

 I'arely all 5 present: style 1 : the ovary 2-celled and 

 making a many-seeded pod (few-seeded ' in some Speed- 

 wells and Cow- wheat). Flowers often showy. Two lobes 

 always belong to the upper lip, three to the lower. 



434. Corolla of a PentBlemon, 

 laid open, showing the 4 perfccl 

 Blamens and Ihe fiflll aa a Bterile 

 naked filament. 



435. ^lamens (with a piecQ of 

 the corolla) of another PenlBte- 

 mon, with the sterile filament 

 bearded. 



436. Piece of Purple Gerardia, 



437. Corolla laid open, showing 

 the 4 Etamend in pairs. 



438. Style and calyx of the Bame. 



439. Part of a pod. 



440. Flower of Toadflax. 



441. Plant of Hedge-Hyssop. 



442. Flower laid open ; one pair 

 ef ^ood slamens ; one pair of Bter- 

 ile lilamenia. '. 



435 43S 439 440 441 442 



* Corolla wheel-shaped or with a very short tube, the lobes more or less unequal. 

 Calyx and corolla 5-cleft : stamens 5, some of them rather imperfect, ( Verbdscum) Mm,i,EiN. 



Calyx and corolla 4-parted : stamens 2, ( Veronica) Speed welu 



^, * * Corolla more or less tubular, bell-shaped and irregular, or 2-lipped. 

 H- Upper hp or lobes covering the lower in the bud (except sometimes in Monkey-flower). 

 Corolla with its 2-lipped mouth closed by a palate, i. e. an inward projection of the lower 

 lip: stamens 4. 

 Corolla with a slender spur at the base on the lower side, (Liniiria) Toadflax. 



Corolla sac -like at the base on the lower side, (Antirrhinum) Snapdragon. 



Corolla 2-parted: the lower lip sac-shaped in the middle; the short tube with a protuber- 

 ance at the base on the upper side : stamens i, ( Collinsla) Collinsia. 



