50 
Colorado Agricultural College 
2. Hedge Mustard (Sisymbrium 
officinale (L.) Scop., Erysimum 
officinale L.) (Fig. 82). — Seeds 
bone-brown to hazel in color, nearly 
circular in cross-section, grooved as 
in S. altissimum and more irregular 
in shape, .6-1.3 mm. long, .4-.6 mm. 
wide. 
7. Radish 
(Raphanus L.) 
Pods oblong, circular in cross-section, taper- 
ing into a beak; pods rarely splitting open at 
maturity ; seeds oblong to nearly spherical. 
Wild Radish, White Charlock (Raphanus 
raphanistrim L.) (Fig. 83). — Seeds vineaceous- 
brown to dark vineaceous-brown in color, sur- 
face marked with a network of fine lines and 
shallow pits; seeds 2-3 mm. long, 1.5-2 mm. 
wide, irregular in size and shape. 
8. Shepherd's Purse 
(Bursa Weber., Capsella Medic.) 
Pods distinctly flattened, wedge-shaped or heart-shaped, notched at the 
Shepherd’s Purse (Bursa bursa-pastoris (L.) 
Britton.. Capsella bursa-pastoris (L.) Medic.) 
(Fig. 84). — Seeds burnt-sienna in color, oblong, 
-lightly oval in cross-section, each face marked with 
one distinct ridge separating the two distinct 
grooves. whi( h are nearly as long as the seed and 
join at the end of the ridge, forming a loop around 
it; seeds .6-. 8 imn. lomi, .3-5 mm. vide. 
14. CAPER FAMILY 
( C apparid aceae ) 
Fruit a capsule or berry, elongated or flattened; seeds numer- 
ous, usually kidney-shaped, without endosperm; embryo coiled. 
Bee Flower, Stink Flower 
(Cleomc E.. Peritoma DC.) 
Capsule elongated, oblong; seeds numerous, appearing as thouirh folded 
together lengthwise. 
<^op : seeds numerous. 
Fig. 84. Shep- 
herd’s Purse 
B u r s a bursa- 
pastoris). X 14. 
Fig. 83. Wild 
Radish (Raphan- 
us raphanistrum ) . 
X 12. 
C.Tn.f? 
Fig. 82. Hedge Mustard (Sis- 
ymbrium officinale), x 33. 
