1912-13.] BOTANICAL SOCIETY OF EDINBURGH 137 



descriptions, and to Mr. Arthur Bennett. A.L.S.. for many 

 of the records. 



The figure in " English Botany " is a very fair represe n- 

 tation of the Linnean type, but the detailed examination 

 of the species as occurring in Britain has shown that C. 

 danica falls naturally into three well-marked sections, and 

 after cultivation tests in which the distincmishincr features 

 have proved wonderfully constant. I have thought it well 

 for a better understanding of the species that it be divided 

 into three varieties, of which I herein give detailed 

 descriptions. 



Gochlearia '/•/(,,,'<;■'. Linn. 



i-'i Typica, var. nov. — Planta robusta. Radix annua. 

 Caules saepius multi e basi orientes procumbentes. Folia 

 saepius angulata. nitenti-viridia. carnosa : superiora caulina 

 breviter petiolata vel subsessilia. hederaeformia. nervis 

 supra impressis. infra eminentibus. Flores vix compacti. 



Plant annual (probably usually a " winter annual " ). 

 Foliage deep glossy green, fleshy. Radical leaves cordate, 

 or 3-5-lobed. or angled, sometimes entire, rather long 

 petioled. more or less deeply veined. Lower cauline leaves 

 stalked, nut usually exceeding radical leaves, upper shortly 

 stalked or subsessile. hederate. deeply - veined. Stem 

 channelled procumbent, simple or branched, at first short 

 but lengthening during flowering. Flowers pale pink or 

 white. Petals short, ovate, limb rather abruptly narrowed 

 into the claw. Sepals rather large, narrowly eliptical 

 lanceolate, hooded, green, usually more or less tinged with 

 reddish-brown, especially towards the apex. Pods ovate. 

 slightly flattened at the ends, turgid, conspicuously veined 

 when ripe, style distinct. Seeds small, tubercled. deep 

 brown. 



This variety is fairly common in England and Ireland, 

 but less so in Scotland. 



(6) Suberecta, var. nov. — Planta gracilis. Radix annua. 

 Caulis saepius solitarius erect us. substrictus. flexibilis. in 

 fructu subnutans. Folia minus nitentia. infra nonnunquam 

 purpurascentia. vix carnosula : radicalia numerosa. parva. 

 ascendentia, mox emarcescentia : petiolus gracillimus : 

 caulina omnia petiolata. hederaeformia. nervis venulisque 



