RophanUS.] CRUCIFER.E. 47 



vacant or filled up with the cellular radiations just mentioned ; it is this structure 

 which on a transverse section between each seed gives the bilocular appearance. 

 The seeds seem attached to the middle of the septum between its two coats or 

 layers which separate and infold the seeds constituting the cell itself, the inter- 

 mediate and united portions of the septum becoming wholly or partially obliterated 

 as the pod advances to maturity, leaving only a spongy mass between the now un- 

 connected cells. 



2. E. maritimus, Sm. Sea Eadish. "Leaves interruptedly 

 lyrate, fruit jointed striated, style scarcely longer than the last 

 joint."— ^r. Fl. p. 43. E. B. t. 1643. 



W. Jlfed.— Chalky sea-cliffs between Freshwater Gate and the Needles, 1849, 

 Albert Hamhrough, Esq. .'.'.' 



Root of several stout, tapering, nearly simple branches, white and fleshy ex- 

 ternally, with a tough woody centre, and possessing an extremely hot, acrid and 

 pungent taste and smell, like Horse-radish. Stems numerous, 'erect or ascending, 

 pale green and somewhat glaucous, tereti-angular and furrowed, rough with de- 

 flexed rigid hairs or bristles very copiously clothing their base which is quite his- 

 pid, higher up becoming more and more scattered, and at length disappearing 

 towards their extremities which are quite glabrous, copiously and alternately 

 branched, the branches long, slender, spreading or divaricate, brittle, constituting 

 a large, very bushy plant 2 or 3 feet in height. Leaves somewhat fleshy, rough 

 with short, rigid, erect, scattered hairs, strongly veined. Lower stem-leaves like 

 the radical ones, the uppermost narrowly lanceolate, quite simple and entire or 

 slightly denticulate. Flowers in constantly elongating corymbs. Sepals equal to 

 or rather shorter than the claws of the petals, greenish yellow, erect, nar- 

 rowly elongate-oblong, faintly nerved, bulging at the base, obtuse -concave and 

 much thickened at their apex, at and near which are generally one or two bristle- 

 like hairs, otherwise quite glabrous. Petals bright yellow, deeper in colour than 

 in R. Raphanistrum, the limb obovate-rotundale, entire, wavy, obscurely reticu- 

 lated with anastomosing veins scarcely visible but by transmitted light, spreading 

 flat at right angles to the long, narrow, colourless, tapering, fleshy claw, which has 

 a strong ridge or keel ninning anteriorly its whole length. Stamens glabrous ; 

 filaments compressed, the 4 longer exceeding the shorter pair by about i, without 

 glands at their base, the 2 shorter filaments with a green nectariferous gland of a 

 somewhat cubical figure between them and the ovary ; anthers elliptical-oblong, 

 erect, at length recurved. Style about equal to the longer filaments, subancipital, 

 glabrous, tapering insensibly from the ovary, its summit (stigma) depressed, capi- 

 tate, 2-lobed, papilloso-pilose. Pods erect, either continued in the axis of their 

 patent, diverging, straight or ascending pedicels, or forming with them angles more 

 or less acute, moniliform, quite glabrous, I — 4-celled, the divisions globose, aud 

 when green perfectly smooth and even, at maturity becoming pale brown or yel- 

 lowish, smaller than in R. Raphanistrum, the beak terminating in a much shorter 

 tapering point than in that, otherwise similar.* Seeds brownish red, large, glo- 

 bular, very finely and reticulately rugose, precisely like those of R. Raphanistrum, 

 in size and colour. 



The garden radish (-R. sativus, L.), , differs from both our wild species in being 

 smoother all over, of a more glaucous green, in the very smooth and tumid pod, 

 and flowers of a pale purple or white, and in its thick fleshy root. 



* I do not perceive any material difference in the number or depth of the fur- 

 rows in the pod of these two species, my Isle of Wight specimens of R. maritimus 

 not having them more strongly marke'd than in R. Raphanistrum from Crux Eas- 

 tou in the North of Hampshire. 



