KEY. 133 



130. Leaves palmately compound ; leaflets 3. Seed- 

 stalks broad and flat. Cotyled. (0=). Siliques lanceolate. 

 Flowers in a terminal raceme. Root necklace-form, or 

 toothed ; pleasant to the taste. Dentaria. 



Leaves not palmately compound, or at least not 

 the upper ones. Seed-stalks not dilated. Cotyl. (0=). 121 



131. Flowers violet-purple, in panicled racemes. Claws 

 of the petals longer than the calyx. Silique linear, terete. 

 Leaves ovate-oblong, pointed, toothed, the lowest sometimes 

 lyrate-pinnatifid. lodanthus hesperidoides, Torr & Gr. 



(I. pinnatijida. Wood.) 



Flowers white or rose-color. Silique linear, the 

 flattened or concave valves usually separating elastically 

 from the base. Seeds on slender seed-stalks. Leaves either 

 pinnate or simple, and only the lower ones sometimes 3- 

 lobed or divided. Stamens sometimes 4 only. 



(104) Cardamine. 



133. Seeds globular, with the cotyledons conduplicate. 

 Siliques tipped with a stout, either empty or 1-seeded beak, 

 and nearly terete, either smooth and 4-angled, or smooth, 

 many-angled and torulose, or hispid and torose. Lower 

 leaves lyrate, incised, or pinnatifid. Sinapis. 

 Seeds oblpng, or lens-shaped 123 



133. Seeds winged. Siliques terete and flattened, nerve- 

 less. Petals twice longer than the sepals, yellow, at least 

 their broad claws. Leaves lyrate-pinnatifid. 



Leavenworthia. 



Seeds not winged. Siliques 4- to 6-sided, the 



valves 1- or 3-nerved 124 



134. Cotyledons incumbent 125 



Cotyledons accumbent. Siliques convex-4-angled, 

 about 9 lines long, tipped "with a conspicuous style, the 

 valves keeled by a midnerve. Leaves lyrate-pinnatifid. 



Barbarea vulgaris, R. Br. 



135. Siliques sharply 4-cornered, linear, the valves 

 keeled with a strong midnerve. Cotyledons often obliquely 

 incumbent. Calyx closed. Leaves lanceolate, slightly 

 toothed. Erysiuaum. 



