36 CRUCIFEILJ:. [SENEBIEISA. 



16. SENEBIK RA, DC. WART-CRF.Ss. 



Annual or biennial, branched, prostrate herbs. Leaves entire or cut. 

 Flmvers minute, white, in short leaf-opposed racemes. Sepals short, spread- 

 ing. Stamens 2, 4, or 6. Pod small, indehiscent, didymous, laterally com- 

 pressed ; valves subglobose, rugose or crested ; stigma sessile. Seeds 1 in 

 each cell ; cotyledons incumbent or induplicate, gradually narrowed into 

 the radicle. DISTRIB. Temp, and warm regions ; species 6. ETYM. J. 

 Senebier, a Genevese vegetable physiologist. JKapidly spreading weeds in 

 the colonies, &c. The shorter stamens are sometimes absent. Embryo in 

 some species cyclical. 



1. B. Corono pus, Poiret ; lobes of fruit not separating deeply wrinkled, 

 the wrinkles forming a crest, style subulate. Corono'pus Ruellii, Gaertner. 

 Waste ground, from Fife southward, rare in Scotland, local in Ireland ; fl. June- 

 Sept. Habit, &c. of S. didyma, but glabrous, less branched ; foliage larger, 

 less divided ; petals and stamens usually perfect ; pods twice the size, 

 abruptly narrowed into the subulate style, lobes connate ; pedicels very 

 short, thick ; and seeds twice as large. Surface of pod variable as to 

 sculpturing. DISTRIB. Europa, N. Africa, W. Asia ; introd. in the U. States. 

 S. DID'YMA, Persoon; lobes of fruit separating wrinkled, style minute. 

 Corono'pus, SmJ 



Waste ground nW the sea from Hampshire westward, S. and W. Wales, S. 

 and W. Ireland\ sporadic elsewhere; a denizen. ir<//,// , il. July-Sept. 

 Annual or bienrtml, slightly hairy, diffuse, creeping, branched and leafy. 

 Leaves finely cuvl-2-pinnatitid ; lobes small, obovate, spreading. /V//-t/-* 

 in short racemes, very minute, white, usually apetalous and diandroua. 

 Pod A in. broad, pedicels spreading ; separating into 2 indehiscent hard 

 lobes ; seed reniform, punctate-striate. DISTRIB. Believed to be a native of 

 the S. States of S. America ; now introd. in many countries. 



17. LBPID'IUM. CRKSS. 



Herbs sometimes shrubby at the base, various in habit. Leaves entire 

 OF much divided. Flowers small, white, often apetalous and oligaiidr<>us. 

 Sepals short, equal. Petals short or 0. Stamens 2, 4, or 6. Pod oblong 

 ovate obovate or obcordate, much laterally compressed; valves kfeleii, 

 winged or not; septum narrow; stigma notched. Seeds 1 in each eell, 

 rarely 2, pendulous from the septum ; cotyledons incumbent, rarely 

 ;u (".unbent. DisruiB. Temp, and warmer regions of the globe; species 

 60-80. ETYM. Ktir&iov, from the scale-like form of the pods. Stamen* 

 sometimes deformed. Cotyledons 3-partite in the common Cress. 



SECTION!. Nasturtias'trum, Oren. and GW/-. /W much compressed, 

 entire or notched, valves keeled, not winged ; style minute. 



1. Ii. latifo'lium, Z. ; perennial, erect, radical leaves long-petioled 

 oblong serrate, pod ovoid entire. Dittander. 



Salt marshes, indigenous in S. Wales, Somerset, Kent, Hampshire, Essex, and 

 Norfolk ; introd. in Fife and Berwick ; S. of Ireland ; fl. July-Aug. 

 Glabrous, rather glaucous. RooUtock elongate, stoloniferous. Htr.w 2-4 ft., 

 much branched, leafy. Radical leaves often 1 ft. ; cauline narrower, upper 

 jessile. Floirer* minute, in short densely panicled bracteate corymbs. 

 Pod -ft in.; pedicels short; valves not winged. DISTRIB. Mid. and S. 

 Europe, W. Asia. 



