Cruciferse. 27 



COCHLEA'RIA ARMORA'CIA. Horse-Radish. 5—6. Stem erect 2—3 

 (no) ft., radical leaves oblong waved on long petioles, cauline leaves sessile, 

 pod obovate with no dorsal nei've. Waste places. 



Vlll.—DRABA. 



Pouch oval or oblong, valves slightly convex, seeds many. 



DRA'BA VER'NA (99). Common Whitlow-Grass. 3—6. Flowering 

 (104) stem leafless, radical leaves lanceolate, petals deeply notched, stem 

 2 — 5 inches high. Every7uhere on old walls. 



Dra'ba incana (26). Twisted-podded Whitlow-Grass. 6—7. Stem leafy, 

 (loi) 6 — 14 in., cauline leaves lanceolate toothed pubescent, petals entire, 

 pods t\visted. [G. {Attermire). 



Dra'ba mura'lis (9). Speedwell-leaved Whitlow-Grass. 4 — 5. Stem leafy, 

 (100) cauline leaves ovate toothed hair}', petals entire, pods flat. 



[G. {MalJiam), C. 



IX. — CARDAMIXE. 

 Pod linear, valves flat separating elastically, leaves pinnate. 

 Leaflets of stem-leaves toothed, 154 



Leaflets of stem-leaves entire, C. pratensis. 



154 Flowers large, . C. amara. 



154 Flowers small, 155 



155 Leaflets roundish, C. hirsuta. 



155 Leaflets narrow, C. impatiens. 



CARDAMI'NE PRATEN'SIS (in). Cuckoo-flower. 4—6. Radical 

 (92) leaflets roundish dentate, cauline ones lanceolate nearly entire, flowers 



lilac. Meadows. 

 CARDAMI'NE AMA'RA (71). Large-flowered Bitter-Cress. 4—6. 

 (91) Radical leaflets roundish, cauline ones angular, flowers white, anthers 



purple. River-sides. 

 CARDAMTNE HIRSU'TA(io6). Hairy Bitter-Cress. 3—8. Radical 

 (93-4) leaflets broad, cauline ones narrower, petals small white, anthers 

 yellow. Often destitute of hairs. Everywhere. 



Cardami'ne impa'tiens (26). Narrow-leaved Bitter-Cress. 5 — 8. Petioles 

 (95) with ciliated stipules, petals small or none. 



[G. {Giggleswick Scar, Cave Ha' Wood, Attermire Cave), S. C. CI. 



y..— ARAB IS. 



Radical leaves spathulate, cauline sessile, petals entire, pod linear com- 

 pressed with prominent veins. 



Ar'abis perfolia'ta (38). 5 — 7. Glabrous 2 — 3 feet, cauline leaves amplexi- 

 (90) caul auricled, flowers pale and yellow, pods 2 — 3 inches long slender 

 crowded in a terminal raceme. [L. 



Ar'abis striata (2). Bristol Rock-Cress. 3 — 5. Stem 6 in., radical leaves 

 (86) hispip in a rosette, flowers white. [CI. 



C 



