CRUCIFER^E. [CARDAMIXK. 



Moist meadows, ascending to 3,200 ft. in Scotland ; fl. April-June. Hoot 

 stock short, stout, sometimes stoloniferous. Stem 1-2 ft. Leaflets of 

 radical leaves $-$ in.; of cauline usually much longer, almost entire. 

 Flower -J in. diam., lilac or almost white. Pods 1-1 J in.; pedicels 

 A-l in. DISTRIB. N. temp., Arctic and sub- Arctic regions. A similar 

 plant occurs in Tasmania. 

 :>. C. ama'ra, L. ; leaves pinnate, radical leaflets suborbicular, cauline 



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



pods erect on slender pedicels, style slender. 



River-sides, &c. scarce ; from Mid. Scotland southwards, ascending to near 



c 1,000 ft. in Yorkshire ; N.E. Ireland ; fl. April^June. Rootstock slender, 

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

 alternate. Flowers % in. diam., racemed or panicled. Petals white, 

 creamy. Pods 1-li in., pedicels \-% in.; style slender, stigma minute. 

 DISTRIB. N. Europe" and Asia to the Himalaya. 

 4. C. Impa tiens, L. ; leaves pinnate, petioles with stipuliform fringed 



auricles, leaflets all narrow deeply cut, petals linoar-oboviite or 0, anthers 



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



fchady copses, &c. local; from York (ascending to near 1,000 ft.) and Den- 

 bigh southwards ; absent in Scotland and Ireland ; fl. May-Aug. lt<>tt,.,-l.- 

 spindle-shaped. Stem 1-2 ft. , stout, erect, very leafy, glabrous. Leaflets 

 many, petioled. Flowers iin. diam., of ten panicled, white. Puds 9-1 in., very 

 slender ; pedicels | 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, 

 eiiual at the base. Petals clawed. Pod narrow-lanceolate ; valves flat, 

 nearly nerveless, elastic ; septum membranous. Meeds 1-seriate, compressed, 

 not margined, funicle dilated; cotyledons accumbent, stalked. Disinir.. 

 N. temp, regions; species about 20. ETYM. dens, from the scaly rootstock. ' 

 Differs from Cardaminc chiefly in habit, and the funiolos. 



1. D. bulbif 'era, L. ; lower leaves pinnate, upper simple entire. 

 Woods and copses, rare, Sussex, Middlesex, Kent, Surrey, Bucks ; doubtfully 

 a native of Perth, Ayr, and Lanark ; absent from Ireland ; fl. April-June. 

 Rootxtock annual or biennial, white. Stem 1-2 ft., simple, leafless below. 

 Leaves with few pairs of oblong, entire or serrate ciliate leaflets 1-2 in.; the 

 uppermost leaflets confluent at the base ; upper leaves with bulbs in their 

 axils. Flowers ^-| in. diam. , white or lilac ; pedicels slender. 1'nds erect, 

 rarely ripening. I) 1ST RIB. Throughout Europe, rare in W. Asia. 



7. SISYM'BRIUM, L. HKIKJE-MfSTARD. 



' Animal or biennial herbs ; hairs always simple. Radical leave* 

 spreading ; cauline alternate, often anricled. Floivers loosely racemed, 

 usually yellow, often bracteate. Sepals short or long. Petals often 

 narrow and long-clawed. Pod narrow-linear, terete or 4-6-angled or 

 compressed ; valves concave or convex, often 3-nerved ; septum mem- 

 branous, nerveless or 2-uerved ; stigma simple 2-lobed or cup-shaped. 

 Seeds many, 1-seriate, not margined; cotyledons incumbent. DISTRIB. 



