POPULAR FLORA. 



61, PIGWORT FAMILY. Order SCROPHULARIACEiE. 



175 



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; 

 rarely 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 Pentstemon, 

 faid open, ehowing the 4 perTuct 

 Blamena and Lhe fiflh as a eterile 

 naked Tiltiment. 



435. Siamens <uith a piece of 

 the corollii) of another Pentste- 

 mon, with the Eierile filament 

 bearded. 



436. Piece of Purple Gerardia. 



437. Corolla lail open, showing 

 the 4 etamend in pairs. 



438. Style and calyxor the same. 



439. Part of a pod. 



440. Flower of Toadflax. 



441. Ptani of Hf:d»e-Hyssop. 



442. Flower laid open ; one pair 

 »r good stamena ; one pairof eter- 

 ile filaments. 



433 43S 439 440 441 443 



* 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, {Verbd$cum) Mullets. 



Calyx and corolla 4-parted: stamens 2, {Veronica) Speedwell 



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

 -t- Upper lip 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, {Linaria) Toadflax. 



Corolla sac-like at the base on the lower side, {Antirrhmum) 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 4, (CoUinsia) Collinsia. 



