100 KEY AND FLORA 
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6, 
Fic. 18. Types of pods of Cruciferee 
A, flattened pod of Arabis, seeds in a single row in each cell: s, cross section 
of pod, showing flattening parallel to the partition. B, pod of Radicula 
palustris, seeds in several rows. C, nearly cylindrical pod of Sisymbrium. 
“D, beaked pod of white mustard (Sinapis alba). E, dried necklace-shaped 
‘and beaked pod of radish (Raphanus Raphanistrum). F, flattened pod of 
shepherd’s purse (Capsella Bursa-pastoris) : s, cross section, showing flat- 
tening at right angles to the partition. G; flattened pod of Lepidium cam- 
pestre; 8, cross section, showing flattening at right angles to the partition. 
(The pods natural size, the sections somewhat magnified.) (After Cosson 
and De Saint-Pierre) ry 
Pods short and flattened, contrary to the partition, splitting open when ripe. 
Pod roundish. Lepidium, IV 
Pod triangular, inversely heart-shaped. Capsella, V 
B 
Pods globular or cylindrical, splitting open when ripe. 
(a) Pods globular. Flowers yellow. Lesquerella, IIT 
