CRUCIFEILE 149 



Leaves radical, simple, pinnatisect, alternate, exstipulate, petio- 

 late, minutely ciliate at the margins of the lobes when young, gla- 

 brescent, dull green above, paler beneath ; petioles subterete, chan- 

 nelled above, dilated at the base, dull purplish-green, dotted with 

 pale markings, glabrous. 



No. 1. Ternately pinnatisect ; lobes rotund- subcuneate, shortly 

 trifid or crenate ; lobes most frequently emarginate and mucronate, 



No. 2. Pinnatisect ; lobes 5, similar to No. 1. 



Nos. 3 and 4. Pinnatisect ; lobes 7, in three opposite pairs and 

 an odd terminal one. 



Cardamine hirsuta, L. 



Hypocotyl short, terete, glabrous, passing indistinguishably into 

 the root. 



Cotyledons differing from those of C. grseca in being rotund, about 

 3-5 mm. in diameter ; petiole 4 mm. long. 



Stem herbaceous, annual, developed when about to flower, angled, 

 glabrous or slightly hairy ; basal internodes undeveloped. 



Leaves simple, radical and cauline, alternate, exstipulate, petiolate, 

 more or less hairy on both sides, bright green above, paler beneath ; 

 petioles subterete, channelled on the upper side. 



Nos. 1 and 2. Eeniform, subemarginate, obscurely crenate. 



No. 3. Reniform with one small lateral lobe, obscurely crenate. 



No. 4. Deeply trilobed ; lateral lobes obovate ; terminal lobe 

 much larger, rounded. 



No. 5. Similar, larger. 



No. 6. Lyrate-pinnatisect with a terminal, large, rotund lobe 

 and two pairs of much smaller lateral ones. 



No. 7. Lyrate-pinnatisect ; terminal lobe rotund, minutely 

 emarginate, trinerved ; lateral lobes rotund-obovate, minutely 

 emarginate. 



No. 8. Pinnatisect ; three terminal segments obovate, minutely 

 emarginate, otherwise like No. 7. 



Cauline leaves on robust plants lyrate, pinnatisect ; segments 

 broad, reniform, or subrotund, angled with excurrent teeth. 



On small starved specimens, the lower or all the cauline leaves 

 are lyrate, pinnatisect, with obovate or spathulate segments ; the 

 upper ones have linear-oblong segments. 



Lunaria biennis, Mo&nch. 



Hypocotyl erect, terete, glabrous, 5-6 cm. long, stained with 

 red. 



Cotyledons large, broadly oblong, obtuse, slightly emarginate, 



