KEY FOR MARCH, APRIL AND MAY 



373 a Leaflets rounded or oblong, somewhat 3-lobed 



Syndesmon. p 153 

 b Leaflets variously toothed, lobed or divided, not as in a 



Anemone, p 152 



374 a Sepals 4; petals 4 375 



b Sepals 5 or more 379 



375 a Leaves palmately 3-5-divided; flowers white or pink 



Dentaria, p 159 

 b Leaves not palmately divided 376 



376 a Pods or ovaries triangular, notched at apex. .Bursa. p 159 

 b Pods or ovaries not triangular 377 



377 a Pods or ovaries rounded, much flattened. .Lepidium. p 157 

 b Pods or ovaries much longer than broad, not rounded. . 378 



378 a Stem leaves linear to lanceolate, usually entire or slightly 



toothed Arabis. p 159 



b Stem leaves usually pinnately divided. .Cardamine. p 159 



379 a Calyx lobes 2 or 3 ; petals 2 or 3 ; stamens ^.-6.Floerkea. p 181 

 b Flowers not completely as in a 380 



380 a Stamens 5-10 381 



b Stamens 15 or more 383 



381 a Petals 6, smaller than the 6 sepals; stamens 6 



Caulophyllum. p 154. 

 b Petals 5, larger than the sepals; stamens 5-10 382 



382 a Leaves with 3 leaflets, each leaflet inversely heart-shaped 



Oxalis acetosella. p 178 

 b Leaves dissected or divided, not with 3 leaflets 



Geranium, p 177 



383 a Leaves 3-lobed, all basal, or sometimes wanting at 



flowering time; flowers with 3 sepal-like bracts 



Hepatica. p 153 

 b Plants not completely as in a 384 



384 a Leaves with* 3 leaflets; flowers white 385 



b Leaves not with 3 leaflets 386 



385 a Pistils 5 Porteranthus. p 164 



b Pistils numerous Fragaria. p 164 



386 a Leaves compound with several leaflets Geum. P 165 



b Leaves with 5-9 rounded lobes 387 



387 a Leaves mainly basal ; flowers white Tiarella. p 161 



b Leaves not mainly basal; flowers purplish Malva p 185 



26 



