MUSTARD FAMILY 19 



1 row, style short, forming a short beak ; flowers in racemes ; leaves pin- 

 natifid; biennial or perennial. 



1. Segments of the leaf 3-9 B. vulgdris 



2. Segments of the leaf 9-17 B. praecox 



BRASSICA Linne 1753 MUSTARD 

 (The Latin name of the cabbage) 



(Sinapis Linne) 



PI. 6, fig. 33-35 



Sepals 4, petals 4, yellow, stamens 6, pods linear, or lanceolate, round 

 or 4-sided in section, often constricted, seeds in 1 row, style long, broaden- 

 ing below into a long often 1-seeded beak ; flowers in racemes ; basal leaves 

 pinnatifid, stem leaves often merely toothed or entire; annual, biennial or 

 perennial. 



1. Beak cylindric or conic 



a. Pods distinctly and suddenly narrowed into the 



slender beak 



(1) Pods 1-2.5 cm. long; beak 2-3 mm. long B. nigra 



(2) Pods 3-5 cm. long; beak 7-12 mm. long B.juncea 



b. Pods tapering gradually into the stout beak, 



3-4 cm. long ; beak 6-12 mm. long B. arvensis 



2. Beak flattened, as long as the pod B. alba 



BURSA Weber 1780 SHEPHERD'S PURSE 



(Lat. bursa, purse, from the pod) 



(Capsella Medicus) 



PI. 6, fig. 3. 



Sepals 4, petals 4, white, stamens 6, pod triangular wedge-shaped, flat- 

 tened at right angles to the partition, notched, several-seeded, style short; 

 flowers in racemes ; leaves pinnatifid, with forked hairs ; annual or biennial. 

 Stems erect from a rosette; stem leaves lanceolate, 

 eared B. bursa-pastoris 



CAMELINA Crantz 1762 FALSE FLAX 

 (Gr. chamae, on the ground, linon, flax, from its growing in flax fields) 



PL 6, fig. 8. 

 Sepals 4, petals 4, yellow, stamens 6, pod pear-shaped, somewhat flat- 



