72 THE GENUS FUMARIA IN BRITAIN 



Artificial Key of the British Species and Varieties. 



Leaf-segments flat, never so narrow as linear and usually much 



broader ; flowers normally exceeding 9 mm. in length ; lower 



j petal never distinctly spathulate (except in x F. Painteri) ; fruit 



[ smooth or rugose when dry 2 



Leaf-segments channelled or flat, rarely much broader than linear; 

 flowers less than 9 mm. in length; lower petal distinctly spathu- 

 late; fruit more or less rugose when dry 12 



/Flowers very large ; lower petal with broad, spreading margins ; fruit 

 large, coarsely rugose and shortly beaked F. occidentalis. 



Flowers large, with large sepals ; lower petal with narrow, erect 

 margins ; fruiting pedicels rigidly recurved ; fruit small or of 

 moderate size, smooth or nearly so, truncate or very obtuse, wich 

 a distinct fleshy neck when fresh 3 



Flowers large or of moderate size, with smaller sepals ; lower petal 

 with narrow, erect or spreading margins ; fruiting pedicels straight 

 or flexuous ; fruit small or of moderate size, smooth or rugose, 

 obtuse or subacute, with an indistinct fleshy neck 6 



Corolla white ; upper petal narrow, laterally compressed, with wings 

 not exceeding the keel; fruiting pedicels arcuate-recurved 4 



Corolla pinkish ; upper petal broader, not laterally compressed, with 

 wings exceeding the keel ; fruiting pedicels patent-recurved or 



divaricate; fruit trancate and generally broader than in 4 5 



/Sepals more or less broadly oval; fruit small, smooth, rounded- 

 obtuse F. capreolata typica. 



Sepals generally narrower; upper petal more acute, with smaller 

 wings ; fruit of moderate size, less smooth, truncate and some- 

 what rectangular F. capreolata v. Bahingtonii. 



Flowers as in var. Bahingtonii', fruit rounded-obtuse as in the type, 

 but less smooth, broad, and much larger 



F. capreolata v. devoniensis. 



(3) Bracts as long as the fruiting pedicels or the lowest longer ; sepals 

 half as long as the corolla, oblong, generally subentire 



F. purpurea typica. 



Bracts very broad and shorter than the fruiting pedicels; .sepals 

 shorter, broader and more toothed ... F. purpurea v. hrevisepala. 



((2) Sepals oval, serrate ; upper petal laterally compressed ; lower 

 petal with spreading margins ; fruit rugose 7 

 Sepals oval or ovate, subentire or dentate ; upper petal more or less 

 dorsally compressed ; fruit smooth or rugulose 8 



J Wings of upper petal pink like the rest of the corolla ; fruit generally 

 subacute and hardly narrowed below F. Bastardi typica. 

 Wings of upper petal blackish red ; fruit smaller, more rounded above 

 and narrowed below F. Bastardi y. Gussonei. 

 Habit laxer and leaf-segments broader than in the type ; outer petals 

 very acute with wings of the upper one blackish red 



F. Bastardi v. hibernica. 

 (6) Flowers large ; sepals oval, subentire ; lower petal with very 

 narrow, spreading margins ; fruit rather large, subrotund, sub- 

 acute, smooth or nearly so F. paradoxa. 



qI Flowers rather large; sepals ovate-lanceolate, dentate; lower petal 

 I subspathulate, with spreading margins; fruit of moderate size, 



truncate, apiculate, slightly rugulose xF. Painteri. 



I Flowers of moderate size or large ; sepals broadly oval or ovate, 

 V more or less dentate; lower petal with erect margins 9 



4< 



