34 DICOTYLEDONOUS PLANTS. 



21. RAPHANUS. Linn. 



Pod transversely many-celled or dividing into several 

 joints. Seeds in one row, globose, pendulous. 



Te trady nanria. Siliq uo* a . 



R. raphanistrum Linn. : leaves simply lyrate ; pod jointed, 1 -celled, 

 striate, 3 8 seeded, longer than the style. 



HAB. Fields. N. S. July. . Stem 12 feet high, hispid. Hmr- 

 ers yellow, large. ll'iM AWW/. 



ORDER XIII. CAPPARIDEjE. De Cand. Lind. 



Sepals 4. Petals 4, cruciate, usually unguiculate and un- 

 equal. Stamens 4, 6, or indefinite, but usually some high 

 multiple of four. Disk hemispherical or elongated. Fruit 

 either pod-shaped and dehiscent, or fleshy and indehiscent, 

 rarely 1-seeded, most frequently with 2-polyspermous pla- 

 centce. Seeds generally reniform ; albumen none ; embryo 

 incurved ; cotyledons foliaceous. 



Herbs, without true stipules, but sometimes with spines 

 in their places. Leaves alternate, petioled, undivided or pal- 

 mate. 



1. ' GYNANDROPSIS. De CmuL 



Calyx of 4 sepals, spreading. Petals 4. Torus elongat- 

 ed. * Stamens 6, united around the torus, free at the apex. 

 Pod stiped. Tetradynamia. Siliquosa. 



G. pentaphytta De Cand. : smoothish ; leaves quinate ; the lower 

 and floral ones ternate ; leafets entire and subserrulate. Clcome fen- 

 Uiphytta Linn. 



HAB. Sandy fields. N. S. to S. Car. July. <$. Stem 2 feet 

 high, viscid. Flowers white, in long terminal racemes. Ptinlss 

 obovate, with very long capillary claws. Pod long, linear, on 

 a long foot-stalk. 



2. POLANISIA. Raf. 



Calyx of 4 sepals, spreading. Petals 4. Stamens S 32. 

 Torus small. Pod sessile or scarcely stiped. Style distinct. 



Tetradynamia. Siliquosa. 



P. graceolens Raf. : viscidly pubescent ; leaves ternate ; leafets 

 elliptical-oblong; stamens 8 12; pod oblong, attenuate at base, mu- 

 ricatewitha glandular pubescence. Cleome dodecandra, var canadcnsis 

 Linn. 



