96 CRUCIFEKAE 



outer spurred at base and spreading above, the inner narrower and 

 clawed. Stamens six in two sets. Pods 10-20-seeded. 



Plants from scaly bulbs. 1. B. OucuUaria. 



Plants from corm-like tubers. 2. £. Canadensis. 



1. B.Cucullaria{L. ) Millsp. Dutchman's Beeechss. S'-lChigh: 

 racemes 4-10-flowered : spurs of petals divergent, sharp-pointed: inner 

 petals minutely crested. — Common in rooky woods throughout. April. 



2. B. Canadensis (Goldie) Millsp. Indian Corn. Like the last but 

 spurs of petals short and rounded at base, and the inner petals conspicu- 

 ously crested. — In rich woods along the bluffs at Courtney. Not com- 

 mon. April. 



4. CAPNOIDBS Adans. 



Herbs with decompound leaves and yellow flowers in racemes. Sepals 

 two, small. Petals four, the upper outer one spurred at base, the interior 

 ones keeled. Stamens six in two sets. Pods many-seeded. 



Pods pendulous. 1. C. flavuhtm. 

 Pods erect. 



Pods h"—'!" long. 2. G. monlannm. 



Pods Z"-Q" long. 3. C. micranilmm. 



1. C flavulum (Eaf.) Kuntze. 6'-14' high : flowers 3"-4" long, the 

 spur V'-l" long, the outer petals wing- created : pods torulose. — Eather 

 common in rich woods along streams. April-ljay. 



2. C. montanum ( Engelm. ) Britton. Like the last but flowers 6" 

 long : outer petals keeled but not crested : pods usually 8-seeded or more 

 seeded, hardly torulose : racemes many- flowered, often 4' long. — Common 

 in rocky barrens and prairies throughout the southwestern part. April- 

 May. 



3. C. micranthum (Engelm.) Britton. Eesembles the two preceding : 

 outer petals barely wing-crested : flowers 3'''-4" long : pods about 5- 

 seeded : racemes few-flowered, usually 1' or less long. — In sandy woods 

 near Courtney and in barrens near Dodson, Pixley's and Lee's Summit. 

 April-May. 



Family 52. CRUOIFERAE B. Juss. 



Herbs with alternate leaves and racemose flowers. Sepals 4. Petals 4, 

 cruciform. Stamens 6, tetradynamous. Pistil 1, consisting of two car- 

 pels. Stigmas usually 2-lobed. Fruit generally 2-oelled and opening by 

 valves. Cotyledons accumbent, incumb-nt or conduplloate. (Eipe fruit 

 is necessary for positive determination of specimens. ) 



Pods two-seeded. 1. Lkpidium. 



Pods more than two-seeded. 

 Pods triangular, emarginate at apex. 11. Bursa. 



Pods pear-shaped. 12. Camelina. 



Pods long-orbicular. 2. Thlaspi. 



Pods short oblong to long-linear. 

 Floweis purplish. 7. loDANTHDS. 



Flowers pure white. 



