264 TETRADYNAMIl SILICULOSA. [CL. XV. 



12. CRAM'BE. Pouch globose, stalked, leathery, one-celled, without 



valves, deciduous. Seed solitary. 



13. CAKl'LE. Pouch angular, of two one-seeded joints, the upper 



deciduous. 



** Pouch notched at the top. 

 9. IBE'RIS. Pouch cleft, inversely heart-shaped. One seed in each 



cell. Two outer petals largest. 

 8. TEESDA'LIA. Pouch cleft, inversely heart-shaped, with keeled 



valves. Seeds two in each cell. Filaments bearing a scale at the 



base. 

 7. THLAS'PI. Pouch cleft, inversely heart-shaped ; valves with a 



bordered keel. Seeds numerous. 

 6. LEPI'DIUM. Pouch cleft, elliptical, two-celled; valves keeled. 



One seed in each cell. 



Order II. SILIQUOSA. Seeds inclosed in a long pod. 



15. CARDAMl'NE. Pod linear ; valves flat, without ribs, narrower 



than the partition. Seeds in two rows, on hair-like stalks. 



14. DANTA'RIA. Pod lance-shaped ; valves rial, without ribs, nar- 



rower than the partition. Seeds on flat dilated stalks. 



16. A'RABIS. Pod linear ; valves flat, veined or ribbed. Seeds in on 



row. 



17. TURRITIS. Pod linear ; valves flat, keeled. Seeds in two rows. 



18. NASTURTIUM. Pod nearly cylindrical ; valves concave, with- 



out keels. Stigma obtuse, notched. Culm spreading. 



19. SISYM'BRIUM. Pod nearly cylindrical. Stigma knobbed, 



notched. Calyx spreading. 



20. MATTHI'OLA. Pod nearly cylindrical, straight. St igma of two 



converging lobes. Calyx closed, two of its leaves prominent at the 

 base. 



21. BARBA'REA. Pod four-cornered, two-edged. Seeds in one row. 



Calux erect. Glands at the inside of the shorter filaments. 



22. ERY'SIMUM. Pod four-cornered. Stigma knobbed, notched. 



Calyx closed. 



23. HES'PERIS. Pod four-cornered. Stigma with two converging 



lobes. Calyx closed, with two protuberances at the base. 



24. CHEIRAN'THUS. Pod compressed, or two-edged. Stigma 



knobbed, or with two spreading lobes. Calyx closed ; two of its 

 leaves prominent at the base. 



25. BRAS'SICA. Pod nearly cylindrical, beaked, two-valved. Seedt 



nearly globular. Calyx closed. 



26. SINA'PIS. Pod nearly cylindrical, somewhat beaked, two-valved. 



Seeds nearly globular. Calyx spreading. 



27. RA'PHANUS. Pod with imperfect bulging joints, without valves. 



Heeds globular. 



TETRADYNAMIA. SILICULOSA. 



1. SUBULA'RIA. AWL-WORT. 



Calyx erect, deciduous, of four equal, oval leaves. Petals four, 

 inversely egg-shaped, entire, their claws shorter than the calyx. 

 Filaments simple; anthers two-lobed. Germen egg-shaped, com- 



