VII. CRUCIFEEiE. 7 



*** Pod with convex, I'ouud-backed valves. 

 Pod dehiscent when ripe. 



Seeds with flat accumbent cotyledons (0 = ). 



Sepals elongate, erect, saccate at base . 1. Matthiola. 

 Sepals spreading, equal at base ... 2. Nasturtiuji. 

 Seeds with flat incumbent cotyledons (0 ID 7. Sisymbrium. 

 Seeds with broad cotyledons folded over 



the radicle (0 >>) 11. Beassica. 



Pod indehiscent ; seeds as in Heliophila . 14. Carponema. 

 B. SiLTCULOS^. Fruit-pod short, few- or 1-seeded, 

 less than thrice as long as broad. 

 * Pod dehiscent. 



Pod with flattish valves and a broad septum. 



Cotyledons accumbent (0 = ) . . . . 6. Altssum. 

 Cotyledons elongate, twice folded on the 



radicle (0 II II II) 13. Heliophila. 



Pod with keeled valves and a narrow septum. 



Seeds 1 in each cell 9. Lepidium. 



Seeds several in each cell 10. Capsella. 



## Pod indehiscent ; seeds solitary. 

 Pod deeply 2-lobed or 2-parted. 



Petals minute, shorter than the sepals . 8. Senebiera. 

 Petals much longer than the sepals , . 15. Brachtcarpea. 

 Pod orbicular or ovate. 



Pod ovate, beaked, with convex, wrinkled 



valves 16. Cycloptychis. 



Pod orbicular, with flat valves . . .17. Palmstruckia. 



1. MATTHIOLA, E. Br. 



Sepals erect, tlie 2 lateral saccate at base. Pod subterete, 

 elongate, mth round-backed valves. Stigma thickened, its lobes 

 erect, connivent. Seeds compressed, 1-seriate; cotyledons 

 accumbent.^ — Fl. CajD. i. p. 20. 



1 South African species : M. torulosa, a rigid, branching, tomentose 

 herb, with stellate pubescence ; radicle-leaves subsinuate. Flower pur- 

 plish. — Northern districts and frontier. 



2. NASTXJIITIUM, E. Br. 



Sepals spreading, equal at base. Pod nearly cylindrical, 

 long or short, with round-backed valves. Styles short or 

 longish ; stigma 2-lobed. Seeds small, turgid, 2-seriate ; coty- 

 ledons accumbent. — Fl. Cap. \.p. 21. 



Water or marsh plants.— 2 South African species : N. officinale {common 

 Watercress), with white flower ; N. fluviatile, E. M., with yellow flower ; 

 the latter an Eastern district plant. 



3. BARBAREA, E. Br. 



Sepals erect, equal at base. Pod 4-sided, 2-edged, the 

 valves keeled at back, awnless at the apex. Stigma capitate. 

 Seeds not margined, 1-seriate. — Fl. Cap. i. p. 22. 



