Cochlearia.] CRUCIFERjE. 87 



iii. diam., cells 4-6-seeded. — Distjrib. N.W. Europe, Polar regions. — A 



valuable antiscorbutic. 

 C. officinalis proper; radical leaves deeply cordate orbicular orreniform, 



cauline amplexicaul angled toothed or lobed, pods nearly globose. Var. 



littora'lis, Lond. Cat, — Muddy sea-shore. 

 Sub-sp. C. alpi'na, Wats. ; radical and cauline leaves as in officinalis, pods 



rbomboid-oblong narrowed at both ends. C. grcenlan'dica, Sm. — Mountains, 



ascending to near 4,000 ft. 

 Sub-sp. C. dan'ica, L. ; radical leaves deltoid lobed, lower cauline similar 



petioled, upper amplexicaul also lobed, petals smaller, and pods as in alpi'na. 



— Sandy and muddy shores, rarer in Scotland and Ireland. 



2. C. an g lie a, L. ; radical leaves oblong-rhomboid or ovate not cordate 

 entire lobed or angled, cauline ^-amplexicaul, pods oblong or obovoid 

 inflated much constricted at the sutures, valves reticulate, style slender. 

 Muddy shores in England and W. Scotland ; rare in Ireland ; Channel Islands ; 

 fl. May-July. — Much larger than C. officinalis, branches 10-18 in., but con- 

 nected with it by intermediates. Leaves more fleshy, narrower, and pod 

 very different, sometimes \ in., style longer, seeds larger. — Distrib. Cf. 

 C. officinalis. 

 C. anglica proper (Var. gem'ina, Hort) ; radical leaves narrowed below, pod 

 obovoid large much constricted at the suture. — Var. Hor'tii, Syme ; radical 

 leaves rounded at the base, pod smaller ellipsoid. 



** Valves with no dorsal nerve. Armora'cia, Eupp. 

 C. Armora'cia, L. ; leaves linear-oblong obtuse deeply regularly crenate, 

 radical long-petioled, cauline narrower sessile, racemes panicled, pods 

 (immature) obovoid on long slender pedicels. Horse-radish. 

 Ditches, corners of fields, &c. ; (an alien or denizen (?) Wats.) ; fl. May-June. 

 — Rootstock stout, long, cylindric. Leaves 8-12 in., radical 3-5 in. broad, on 

 petioles 1 ft., waved with many spreading reticulate nerves, cordate cuneate 

 or unequal at the base ; cauline many, 4-8 in., §-1 in. broad, more serrate 

 than toothed. Flowers ^ in. diam. Rods never ripening in this country ; 

 style slender ; stigma large, capitate ; seeds described as 8-12 in a cell, 

 smooth. — Distrib. Origin unknown ; possibly a cultivated form of C. 

 ■macrocar'pa, W. and K., a native of Hungary. 



13*. CAMELI'NA, Crantz. Gold of Pleasure. 



Annual, erect herbs. Leaves almost entire, cauline auricled. Flowers 

 small, yellow. Sepals short, equal at the base. Petals spathulate. Pods 

 obovoid ; valves turgid, keeled at the back, produced upwards along the 

 base of the style ; margin flat ; septum membranous ; stigma simple. 

 Seeds 2-seriate, not margined ; funicle slender, adnate at the base to the 

 septum ; radicle incumbent. — Distrib. Europe and temp. Asia ; species 

 5-10 (all vars. of one ?). — Etym. x"^" 1 ' an( i ^vov, dwarf flax. 



C. sati'va, Crantz ; radical leaves petioled, cauline oblong-lanceolate. 

 Flax-fields, sporadic ; fl. June-July. — Stems 2-3 ft., branched above, slender. 

 Radical leaves soon withering; cauline 1-3 in., obtuse; auricles pointed, 

 entire or lobulate. Flowers § in. diam. Petals erect. Pods 5-^ in,, on 



