28 CRUCIFERJS. [Card amine. 



Moist places, N. to Shetland ; ascending to 3,000 ft. in Scotland ; Ireland ; 



Channel Islds. ; fl. April-Sept. —Very variable, glabrous or bairy, 6 in.-2 ft., 



erect or diffuse. Leaflets 3-6 pairs, angled or sublobate. Flowers ^ in. 



diam., white. Pods about 1 in., slender, torulose. — Distrib. N. temp, and 



cold zones ; in S. temp, the perennial varieties are very numerous and 



and puzzling. 

 C. hirsu'ta proper ; annual, radical leaves rosulate, pedicels erect, stamens 



usually 4, style short stout.— Open ground. 

 Sub-sp. C. flexuo'sa, Withering; perennial or biennial, radical leaves few, 



leaflets lobed, pedicels spreading, stamens usually 6, style slender elongate. 



C. sylvat'ica, Link. — Shaded places. 



2. C. praten'sis, L. ; leaves all pinnate, leaflets of radical petioled 

 suborbicular, of cauline narrow subsessile, petals large spreading obovate, 

 anthers yellow, pods erect on slender pedicels, style short stout. Lady's 

 Smock, Cuckoo-flower. 



Moist meadows, N. to Shetland ; ascends to 3,200 ft. in Scotland ; Ireland ; 

 Cbanuel Islds. ; fl. April-June. — Rootstock short, stout, sometimes stoloni- 

 ferous. Stem 1-2 ft. Leaflets of radical leaves |-f in. ; of cauline usually 

 much longer, almost entire. Flower |-| in. diam., lilac or almost white. 

 Pods 1-1^ in ; pedicel |-1 in. — Dis-trib. N. temp, and Arctic regions, 

 Abyssinia, Himalaya, Chili. — A similar plant occurs in Tasmania. — Var. C. 

 denta'ta, Schult. ; taller, stronger, radical leaves erect or suberect, leaflets 

 fewer larger angled toothed. — Var. IIaynea'na,Welw. ; habit of C. hirsu'ta, 

 leaflets many small round linear or lanceolate, flowers small white, petals 

 narrower. Thames near Mortlake. 



3. C. atna'ra, L. ; leaves pinnate, radical leaflets suborbicular, cauline 

 narrow or deeply toothed, petals large oboyate spreading, anthers purple, 

 pods erect on slender pedicels, style slender. Bitter cress. 

 River-sides, &c, scarce ; from Aberdeen southd., ascending to 1,000 ft. in 



Yorkshire ; N.EJ. Ireland ; fl. April-June. — Rootstock slender, stoloniferous. 

 Stem 1-2 ft., ascending, glabrous or hairy. Leaves all alternate. Flowers 

 f in. diam., creamy white. Pods 1-1| in. ; pedicel §-§ in. ; style slender, 

 stigma minute. — Distrib. N. Europe and Asia to the Himalaya. 



4. C. impa'tiens, L. ; leaves pinnate, petiole with stipuliform fringed 

 auricles, leaflets all narrow deeply cut, petals linear-obovate or 0, anthers 

 yellow, pods erect on short slender pedicels, style slender. 



Shady copses, &c, local ; from Westmoreland and York (ascends to 1,000 ft.) 

 southd.; casual in Ireland; fl. May-Aug. — Rootstock spindle-shaped. Stem 

 1-2 ft., stout, erect, very leafy, glabrous. Leaflets many, petioled. Flowers 

 | in. diam., often panicled, white. Pods |-1 i'n., very slender ; pedicel j in. 

 Distrib. Europe, temp. Asia to the Himalaya. -The stipuliform auricles, 

 reflexed on the stem, are anomalous structures. 



6. DENTA'RIA, L. CoRAL-ROOT. 



Herbs with creeping, scaly rootstocks. Radical leaves few or ; cauline 

 often opposite or 3-nately whorled. Flowers large, purple. Sepals erect, 

 equal at the base. Petals clawed. Pods narrow-lanceolate ; valves Hat, 



